RELEASE-NOTES.md

Axom Software Release Notes

Notes describing significant changes in each Axom release are documented in this file.

The format of this file is based on Keep a Changelog.

The Axom project release numbers follow Semantic Versioning.

Unreleased - Release date yyyy-mm-dd

Added

• Primal: Functions to evaluate surface and volume integrals over collections of BezierPatch and NURBSPatch objects.
• Quest: An example to evaluate surface and volume integrals over a STEP model and to fit a ellipsoid or oriented bounding box to a model based on its low order moments.
• Primal: Adds NURBSCurve::isLinear() to check if a curve is (nearly) flat (corresponding to BezierCurve::isLinear())
• Primal: Adds NURBSPatch::isTriviallyTrimmed() to check if the trimming curves for a patch lie on the patch boundaries
• Quest: Adds support for reading mfem files with variable order NURBS curves (requires mfem>4.9).
• Quest: Adds OMP support for fast GWN methods for STL/Triangulated STEP input and linearized NURBS Curve input.

Removed

Deprecated

Changed

• Updates CMake code check targets to only use checked in files (via git ls-files, when available)

Fixed

Version 0.14.0 - Release date 2026-03-31

Added

• Lumberjack: Adds optional virtual function isMessageCandidateForCombiner() to the Combiner class that checks if a single given Message is a candidate for the Combiner (returns true by default).
• Sidre: Added Conduit Node to the Python interface.
• Adds yapf as a Python formatter.
• Quest: Adds fast GWN methods for STL/Triangulated STEP input and linearized NURBS Curve input which leverage error-controlled approximation and a spatial index (BVH).
• Slic: Adds new Slic macros that allow you to selectively print messages once per call-site. For example, SLIC_INFO_ONCE(msg) and SLIC_INFO_ROOT_IF_ONCE(EXP, msg).

Changed

• Primal: Axom's polygon clipping was modified to handle some corner cases.
• Mir: The EquiZAlgorithm class was improved so it performs better with OpenMP.
• Bump: Several Bump algorithms were improved so they perform better with OpenMP.
• Many algorithms in Bump and Mir have been enhanced with setAllocatorID() methods to permit use of custom allocators.
• Uberenv's spack updated to v1.1.1
• radiuss-spack-configs submodule removed.

Fixed

• Primal: Fixed NURBSPatch::evaluateDerivatives returning a matrix with empty values. The old behavior can be recovered with an optional flag, which is more efficient if the previously missing values are unneeded
• Core: the ArrayView class was modified so it defers initializing an internal allocator id via Umpire, if present. This prevents excessive calls to Umpire, which are not needed in all use cases.
• Quest: Fixed a compilation problem with -DAXOM_NO_INT64_T=1
• Quest: STEPReader now catches additional edge cases related to orientation of OpenCascade primitives.

Version 0.13.0 - Release date 2026-02-05

Added

• Adds the AXOM_ENABLE_TUTORIALS configuration variable (ON by default)
• Adds a tutorial on shaping in Axom and associated infrastructure in quest, klee, inlet and sidre.
• Sina: User can control curve ordering in Sina output file setDefaultCurveOrder()
• Sina: appendDocument() will create the document if not present or append if document exists. It can also auto detects the protocol based on file's name, removing the need to call the append function that matches your protocol.
• Adds Sina fortran functions sina_set_curves_order and sina_set_record_curves_order
• Sidre: Added iterators and Attribute class to the Python interface.
• Adds new optimization hint macros AXOM_LIKELY and AXOM_UNLIKELY to mark likely/unlikely paths in if-statements.
• The axom::bump::extraction::CutField class was added to cut Blueprint geometry using a field (isosurface). The output contains polygons for 3D inputs and lines for 2D inputs. resulting in geometry with reduced topological dimension.
• The axom::bump::extraction::PlaneSlice class was added to cut Blueprint geometry using a plane given using "origin" and "normal" values in the algorithm's options. The planar slice results in polygons for 3D inputs and lines for 2D inputs.
• Adds a reader for STEP files to quest/io. The geometry can either be returned as an array of NURBSPatch with trimming curves or it can be triangulated into triangle mesh.
• Adds a components variant to Axom's spack package. Users can now provide an explicit list of desired components, e.g. components=sidre and Spack adds any missing dependencies, e.g. the slic component and the conduit dependency. By default (when components is not provided, or when components="all"), all components are enabled. All components can be disabled via components=none.
• Adds a conduit spack variant. Conduit was previously a required dependency in our spack package, and is now enabled by default.
• Adds spack variants for adiak and caliper. These replace the previous profiling variant which enabled both at the same time.
• Adds the AXOM_TEST_NUM_OMP_THREADS configuration variable to control the default OpenMP thread count for tests.
• Slic: Adds slic::getAbortFunction() to return a function pointer to the abort handler called during logging functions
• Quest: Adds a 3D winding number example and improves WN performance in 2D and 3D
• Sidre: Added AXOM_SIDRE_IO_USE_SCALAR_STATE_STRING (default ON) to optionally serialize scalar views with state "SCALAR" instead of "TUPLE" for compatibility with downstream readers (e.g. VisIt) that don't yet support "TUPLE". We expect to remove this in the future as readers adopt the "TUPLE" type.

Changed

• Version of quest::discretize that approximates a surface-of-revolution from a polyline now respects the allocator ID of the output Array. It no longer resets the ID to the execution space default.
• Updates to RAJA version 2025.12.1
• Updates to camp version 2025.12.0
• Updates to Umpire version 2025.12.0
• Updates to Caliper version 2.14.0
• Evaluation methods for line integrals in axom::primal have been generalized, and evaluate_scalar_line_integral has been renamed to evaluate_line_integral.
• Treatment of materials on strided-structured Blueprint meshes has changed in axom::mir. Materials are now expected to be defined only on the valid subset of zones in the mesh. This more closely matches VisIt behavior.
• Views and functions for creating views in axom::bump have been enhanced to better validate Blueprint meshes to guard against malformed input. Likewise, runtime input checks have been promoted to use SLIC_ERROR_IF instead of SLIC_ASSERT so the checks will remain in optimized Axom builds.
• The maximum number of vertices allowed in polygon primitives can now be passed as a template argument to axom::bump::TopologyMapper, axom::bump::PrimalAdaptor, and axom::mir::ElviraAlgorithm.
• Material views in axom::bump::views were enhanced with const_iterator classes that enable traversal of material data for zones so kernels do not need to use large fixed size buffers to gather that data inside kernels.
• Material views in axom::bump::views were enhanced with an overloaded zoneMaterials() method that allows data to be gathered into axom::ArrayView objects.
• A new heavily_mixed example program was added in axom::mir to demonstrate running MIR on meshes with heavily mixed zones.
• saveDocument() now has a AUTODETECT protocol for the file type
• Sina fortran can now handle multiple records rather than a single record per application
• Most Sina Fortran call can now pass the record for which the call is desired (sina_add, sina_add_file, sina_add_curveset, sina_add_curve)
• Sina fortran create_document_and_record is now sina_create_record
• Sina fortran sina_write_document now accepts a third argument that preserves records in memory so they can be written to another file (otherwise they're released from memory as soon as they're written)
• Primal: In Bezier and NURBS classes, accessors for arrays of control points, weights and knots are now returned by (const) reference instead of returning a copy by value.
• The axom::bump::clipping::ClipField and axom::mir::EquiZAlgorithm classes were enhanced so they can clip polygons up to 8 sides.
• De-virtualized axom::Array methods to improve performance. This change may break code which utilizes axom::Array or sidre::Array/MCArray in a polymorphic manner, for example by overriding Array::updateNumElements() or Array::dynamicRealloc(). Refer to the new StoragePolicy interface for substitute functionality.
• The axom::bump::clipping namespace was renamed to axom::bump::extraction since it now contains additional algorithms.
• Updates to mfem version 4.9. Also updates mfem's hypre dependency to hypre version 2.27.
• Quest: MFEMReader can now read in multispan 1D NURBS meshes
• fmt: Axom's built-in version of the fmt formatting library was updated to fmt version 12.1.0.
• Primal: Improves robustness of linear_winding_number by using atan2 instead of acos
• Core: Allows users to set the minimum size for Axom's shared memory allocator in getSharedMemoryAllocatorID()
• Core: Allows users to set the name of the shared memory allocation in allocate()
• Quest: Adds a function to the signed distance API to set the shared memory size: signed_distance_set_shared_memory_size()
• Sidre: Shroud-generated C/Fortran interfaces for Group::createViewScalar() and Group::createViewString() now include overloads that accept an allocator ID.

Fixed

• Sina's Fortran tests are now running (instead of silently failing)
• Optimized Array::push_back() and Array::emplace_back() operations.
• Quest: In Shaping applications, we now check return code after attempting to load a mesh and throw an error for unsuccessful loads.
• Core: Bugfix for batched insertion into a FlatMap with deleted entries
• Quest: Sets the allocation name for shared memory in the signed distance query

Removed

• Removes the AXOM_ENABLE_MFEM_SIDRE_DATACOLLECTION CMake config variable. It is no longer needed -- we now always use MFEMSidreDataCollection in configurations with mfem and sidre.

Deprecated

Version 0.12.0 - Release date 2025-10-03

Added

• Added a new Python interface for sidre, using nanobind to generate Python bindings.
• Added a new "BUMP" (Blueprint Utilities for Mesh Processing) component in Axom, which includes utilities that were formerly included in the Axom MIR component. BUMP is useful for writing algorithms that process Blueprint meshes.
• New axom::MALLOC_ALLOCATOR_ID is for using malloc and free even when axom is configured with Umpire support.
• The axom::mir::ElviraAlgorithm class, which performs material interface reconstruction using the ELVIRA algorithm, was enhanced so it supports 3D structured mesh inputs. The output mesh is a Blueprint mesh with a 3D unstructured polyhedral topology.
• The axom::mir::ElviraAlgorithm class, was enhanced to accept a "plane" option that causes it to return clipping plane origin and normal as fields on the mesh.
• The axom::mir::ElviraAlgorithm class, was enhanced to accept a "pointmesh" option that causes it to return a mesh consisting of points located at clipping plane origins for each clipped material fragment, instead of returning polygonal or polyhedral meshes. This option is off by default.
• Exposed primal clip operations for clipping various shapes with a plane.
• Adds constructs in the axom namespace that wrap RAJA atomics, reductions, scans, and sorts. When RAJA is not available, serial-only substitutes are provided, allowing algorithms to still compile and run. These constructs are templated on the ExecSpace (execution space) so it is not necessary to query RAJA policies via the execution_space type traits classes.
• 2D and 3D implementations for axom::for_all were added.
• Adds axom::FlatMapView, a helper class associated with axom::FlatMap to support queries from within a GPU kernel.
• Adds axom::FlatMap::create<ExecSpace>() and axom::FlatMap::insert<ExecSpace>() to support constructing or inserting a hash map over a batch of keys and values on the GPU or with OpenMP.
• Adds support for custom allocators to axom::FlatMap.
• Primal: Adds ability to perform sample-based shaping on tetrahedral shapes.
• Improves efficiency of volume fraction computation from quadrature samples during sample-based shaping.
• Adds a axom::DeviceHash type as a GPU-enabled version of the std::hash interface.
• Added a new quest::STLWriter class that writes mint meshes to STL format.
• Adds assign methods to axom::Array.
• Adds assign, fill, set methods to axom::ArrayView.
• Core: Adds a TempFile class to Axom's FileUtilities to help with generating temp files with unique file names that can be automatically removed when the instance goes out of scope.
• Klee: We now support optional specification of a per-shape dimensions field for the geometry of a shape. These can be used to override the global dimensions of a Klee input file.
• Lumberjack: Added sorting of log messages by creation time. This is now the default.
• Slic: Added check for pending messages which is done by default when calling flushStreams() and pushStreams().
• Sina: Records can now be provided with a curve ordering to use when writing to file. By default, all records will now use oldest-first ordering (ULTRA-like)
• Sina: Documents can optionally be written as HDF5 instead of JSON. HDF5 should provide better performance for large, curve-rich sets
• Sina: Written documents can now be appended to. This is a flexible system with a few different uses, ex: continuous writing of timeseries, overwriting values that change over the course of a simulation, and snapshot handling. See documentation for details.
• Adds quest::MFEMReader for reading 1D MFEM contours in 2D space.
• Adds an option to quest::SamplingShaper to allow in/out tests based on winding numbers for MFEM contours.
• The shaping_driver example program can select --sampling inout to do the default In/Out sampling and --sampling windingnumber to select winding number in/out tests for MFEM data.
• Adds Axom-native Gauss-Legendre quadrature rules that can be used without an MFEM dependency

Changed

• Updates blt submodule to BLT version 0.7.1
• Updates to Conduit version 0.9.5
• Updates to RAJA version 2025.09.0
• Updates to camp version 2025.09.2
• Updates to Umpire version 2025.09.0
• Axom now requires C++17 and will default to that if not specified via BLT_CXX_STD.
• Fixed Timer::elapsed*() methods so they properly report the sum of all start/stop cycles since the last reset().
• Adds support for allocations using malloc and free even when Axom is configured with Umpire support.
• Adds a new utility tool, mesh_converter, which converts between mesh formats. The first conversion is from a Pro-E tetrahedral mesh to an STL mesh of its boundary triangles.
• Primal: Adds a method to determine if a point is contained within a Tetrahedron.
• The primal::BoundingBox class' expand() and shift() methods were modified so they do nothing when called on invalid bounding boxes.
• Updates to MFEM version 4.8.0
• Readers in Quest were moved from a quest/readers directory to quest/io.
• Sina: Renames a Fortran module to sina_hdf5_config (from hdf5_config)
• Spin: Uses axom::FlatMap in SparseOctreeLevel implementation. We have observed a performance regression of about 20% during InOutOctree construction and queries over STL surface meshes relative to the previous sparsehash implementation. Please reach out to Axom developers if this affects you while we work on fixes for these.
• Klee: Moves source files related to IO into a new io subdirectory in the Klee component
• Primal: Consolidates construction logic for BezierCurve, BezierPatch, KnotVector, NURBSCurve and NURBSPatch classes and add overloads from axom::ArrayView
• Primal: 2D and 3D winding number methods are now accelerated via memoization (dynamic caching + reuse) when supplied arrays of query points
• Core: Updates behavior of FlatMap::reserve() to only trigger a rehash if maximum load factor would be exceeded.
• Quest: The signed_distance functions were modified so they use Umpire's shared memory mechanisms instead of using MPI3 directly.
• Axom's AXOM_USE_MPI3 CMake config option and corresponding macro definition were removed.
• When Umpire is present, Axom now detects whether it supports shared memory and defines the AXOM_USE_UMPIRE_SHARED_MEMORY macro if appropriate. This macro can be used to conditionally compile code involving shared memory via Umpire.
• Quest: Moves curve linearization from the quest::C2CReader into quest::LinearizeCurves so the logic can be used with other curve data.
• Axom's AXOM_USE_64BIT_INDEXTYPE CMake config option now defaults to ON. As a result, axom::IndexType defaults to std::int64_t instead of std::int32_t.

Fixed

• Core: prevent incorrect instantiations of axom::Array from a host-only compile, when Axom is compiled with GPU support. Instances where this occurs will now trigger a static assertion during compile time.
• Fixes build with ninja generator
• Primal: Fixes a BoundingBox constructor with zero (or fewer) points
• Sina: Fixes configuration variables related to inclusion of AdiakWriter.hpp and to hdf5 support in sina_fortran_interface.f
• Spin: Fixes undefined behavior in BVH tree construction associated with using signed indexes
• Spin: Fixes undefined behavior in UniformGrid construction associated with invalid geometry bounding boxes
• Core: Fixes undefined behavior in MapCollection when searching empty collections
• Core: Fixes some edge cases in the joinPath file utility
• Core: Fixes FlatMap::erase() to update reported size.
• Core: Fixes FlatMap::rehash() when allocated in device-only memory.

Deprecated

• Primal: Deprecates Triangle::checkInTriangle(pt). Use Triangle::contains(pt) instead.

Version 0.11.0 - Release date 2025-04-02

Added

• Added a new "Mir" Axom component for accelerated Material Interface Reconstruction (MIR) algorithms. MIR algorithms take Blueprint meshes with a matset and they use the matset's material information to split any input zones that contain multiple materials into zones that contain a single material. The Mir component provides an implementation of the Equi-Z MIR algorithm, which is a visualization- oriented algorithm that produces smooth interfaces between zones and their neighbors. The Mir component also provides a 2D ELVIRA algorithm, which reconstructs polygonal shapes and preserves volume fractions.
• Support in quest::IntersectionShaper for Blueprint mesh stored in a conduit::Node or sidre::Group.
• Adds new CMake configuration options, AXOM_ENABLE_ASAN and AXOM_ENABLE_UBSAN, to enable/disable AddressSanitizer and UndefinedBehaviorSanitizer respectively in Axom. Default is OFF for both.
• A number of new klee::Geometry constructors are added, for the different shapes now supported. This is a temporary change. The class will be subclassed in the future to support a diversity of geometries.
• Support some analytical shapes in IntersectionShaper.
• Support generating shapes in memory (not requiring input files).
• sidre::View holding array data may now be re-shaped. See sidre::View::reshapeArray.
• Sina C++ library is now a component of Axom
• Adds optional dependency on Open Cascade. The initial intention is to use Open Cascade's file I/O capabilities in support of Quest applications.
• Adds primal::NURBSCurve and primal::NURBSPatch classes, supported by primal::KnotVector.
• Adds trimming curve support for primal::NURBSPatch via an array of parameter space primal::NURBSCurve objects, where portions of the surface not bound by trimming curves in parameter space are invisible.
• Adds a Quest example that reads in a STEP file using Open Cascade and processes its geometry
• Adds a piecewise method to load external data using sidre::IOManager. This adds new overloaded methods of loadExternalData in sidre::IOManager and sidre::Group.
• Adds intersection routines between primal::Ray objects and primal::NURBSCurve/primal::NURBSPatch objects.
• Adds LineFileTagCombiner to Lumberjack to allow combining messages if line number, file, and tag are equal.
• Adds some support for 2D shaping in quest::IntersectionShaper, using STL meshes with zero for z-coordinates or in-memory triangles as input.
• Adds ability in Lumberjack to own and set communicators.
• Adds NonCollectiveRootCommunicator to Lumberjack to provide an MPI-based communicator for logging messages non-collectively.
• Adds initial support for 2D shaping in quest::IntersectionShaper, using a c2c contour as input. The contour cannot overlap, and is expected to be entirely above the x-axis.

Changed

• Updates blt submodule to BLT version 0.7.0
• Updates to MFEM version 4.7.0
• Updates to Caliper version 2.12.1
• Updates to Conduit version 0.9.3
• Updates to RAJA version 2025.03.0
• Updates to camp version 2025.03.0
• Updates to Umpire version 2025.03.0
• primal::NumericArray has been moved to core. The header is core/NumericArray.hpp.
• quest::Shaper and quest::IntersectionShaper constructors require a runtime policy. Changing the policy after construction is no longer supported.
• Importing Conduit array data into sidre::View now allocates destination data using the View's parent's allocator ID, instead of always using host memory. This is consistent with the behavior of deep-copying data from Sidre.
• ItemCollection and its child classes MapCollection, ListCollection, and IndexedCollection were moved from Sidre to core. The namespace prefix for these classes is now axom:: instead of axom::sidre. The internal usage of these types within Sidre Datastore and Group is unchanged.
• MFEMSidreDataCollection::LoadExternalData now takes two optional string parameters, one that is a filename (defaults to the name member variable) and the other is a Group path relative to the base of the Data Collection itself (defaults to the root of the DataStore).
• SLIC_ASSERT,SLIC_ASSERT_MSG,SLIC_CHECK, and SLIC_CHECK_MSG macros delegate to assert() within HIP device kernels.

Fixed

• Fixes compilation issue with RAJA@2024.07 on 32-bit Windows configurations. This required a RAJA fix to avoid 64-bit intrinsics, as well as support for 32-bit Words in Slam's BitSet class.
• Minor bugfix to primal::intersect(segment, ray) to better handle cases when segment and ray overlap or are nearly parallel.
• Fixes a memory leak in axom::Array copy constructor.
• Fixes robustness issue with the axom::primal::clip overload for clipping a 2D polygon against another 2D polygon.

Version 0.10.1 - Release date 2024-10-22

Added

• Constructor to Axom BVH that avoids an unnecessary copy of each bounding box.

Fixed

• Issue with uninitialized state in axom::Array class was causing host-initialization of device-allocated memory in certain situations. This could cause warnings about uninitialized memory or crashes in the axom::Array constructor.
• Added a guard for sidre-related mint API usage in a quest example.
• Removed std::ends usage from SLIC_ASSERT,SLIC_ASSERT_MSG,SLIC_CHECK, and SLIC_CHECK_MSG macros that prevented Lumberjack from combining messages.
• Some line numbers linking file contents into the Axom Quickstart Guide were incorrect causing the docs to appear incomplete.

Version 0.10.0 - Release date 2024-09-27

Added

• Added SLIC constructors that take in a std::string for the stream. If string is interpreted as a file name, the file is not opened until SLIC flushes and the stream has at least one message logged.
• Primal: Adds a clip() operator overload for clipping a 2D polygon against another 2D polygon.
• Primal: Adds Polygon::reverseOrientation() to reverse orientation of a polygon in-place.
• Adds StaticArray, a wrapper for StackArray with a size member variable.
• Multidimensional core::Array supports column-major and arbitrary stride ordering, in addition to the default row-major ordering.
• Adds new PolygonArray and MAX_VERTS template parameters to primal::Polygon for dynamic or static allocation.
• Adds support for the optional caliper and adiak dependencies to axom. These dependencies are added through axom's spack package via the new +profiling variant, and are enabled in axom's build system via the CALIPER_DIR and ADIAK_DIR configuration paths.
• Adds new annotation macros to axom: AXOM_ANNOTATE_{BEGIN,END,SCOPE,METADATA}. These replace the previous annotation macros AXOM_PERF_MARK_{FUNCTION,SECTION}.
• Adds a RAII-based MPIWrapper utility class to axom's core component. This can help setup/teardown MPI in axom's examples. It can also be used in configurations with MPI.
• Primal: Adds a closest_point operator for finding the closest point on a Segment
• Primal: Adds a reflectPoint method to the Plane primitive
• Primal: Makes several primitive methods available in device code
• Improves support for axom::Array allocated in unified and pinned memory on GPU platforms. Use of GPU-based operations for Arrays allocated in a unified memory space is controlled with a new method, Array::setDevicePreference().
• Adds svg2contours script to convert paths in an SVG file to an MFEM NURBS mesh
• Quest: Adds an example to query winding numbers on an MFEM NURBS mesh

Changed

• Updates to Conduit version 0.9.2
• Updates to RAJA version 2024.07.0
• Updates to camp version 2024.07.0
• Updates to Umpire version 2024.07.0
• axom::CLI::ExitCodes::Success has been changed to axom::CLI::ExitCodes::CLI11_Success to avoid conflict when X11 #defines Success.
• MarchingCubes masking now uses the mask field's integer values instead of converting them to booleans. The new behavior lets you select a value to mask for. If you want to continue the boolean behavior, use only 0 or 1 in your mask field.
• Primal: Polyhedron::centroid() function changed to return center of mass of the polyhedron. Polyhedron::vertexMean() added to return average of polyhedron's vertices. Polyhedron::moments() returns the volume and centroid of the polyhedron, the 0th and 1st moments respectively.
• quest::ArrayIndexer is now axom::MDMapping, adopting conventional terminology and moving out of quest.
• mint::structured_exec is now axom::nested_for_exec, to support nested for loops for all of Axom. See src/axom/core/execution/nested_for_exec.hpp.
• Set default Umpire allocator id to device instead of unified for CUDA and HIP execution policies.
• Upgrades vcpkg usage for axom's automated Windows builds to its 2024.03.19 release. Also updates vcpkg port versions for axom dependencies. Temporarily removes umpire from axom's default dependencies on Windows due to incompatibility between umpire's external fmt and axom's vendored copy.
• Turn off CMake finding dependencies on system paths.
• axom::Array: trivially-copyable types with a non-trivial constructor are now initialized on the GPU.
• SLIC no longer outputs the rank count in the RANK format string in parallel loggers. You can access the rank count via new format option RANK_COUNT.

Removed

• Removes config option AXOM_ENABLE_ANNOTATIONS. Annotations are now provided by caliper (and adiak for metadata) and are available when axom is configured with CALIPER_DIR and ADIAK_DIR config variables.
• Removes caching of {PACKAGE}_FOUND variables in SetupAxomThirdParty.cmake
• We no longer test Axom with the XL compiler. So users should consider XL unsupported.

Fixed

• numerics::eigen_solve() has been corrected to avoid an early return with error state.

Version 0.9.0 - Release date 2024-03-19

Added

• Primal: Adds a Quadrilateral primitive
• Primal: Adds a compute_bounding_box() operator for computing the bounding box of a Quadrilateral
• Primal: Adds a clip() operator for clipping a tetrahedron against the half-space defined by a plane
• Primal: Adds a checkAndFixOrientation() function to primal::Tetrahedron that swaps the order of vertices if the signed volume of the Tetrahedron is negative, resulting in the signed volume becoming positive.
• Adds FlatMap, a generic key-value store which aims for drop-in compatibility with std::unordered_map, but utilizes an open-addressing design.
• Adds support for device-side use of Array::push_back() and Array::emplace_back().
• Adds initial support for using Slic streams with tags
• Adds an example that finds intersection candidate pairs between two Silo hexahedral meshes using either a BVH or Implicit Grid spatial index
• Quest: Adds setTetPredFromBoundingBox() and setTetPred() functions to quest::ProEReader and PProEReader that set a tet predicate, allowing user code to read in a subset of a Pro/E ASCII tetrahedron mesh file.

Changed

• MarchingCubes has optimizations to improve GPU performance, particularly for repeated computations. The constructor has changed and a new setMesh method is added to set (or change) the mesh. New accessors present output data without moving them from device to host. These accessors are an interim solution and likely to be updated in the future.
• DistributedClosestPoint outputs are now controlled by the setOutput method.
• MarchingCubes allows user to select the underlying data-parallel implementation
  • fullParallel works best on GPUs.
  • hybridParallel reduces the amount of data processed and works best with MarchingCubesRuntimePolicy::seq.
  • byPolicy (the default) selects the implementation based on the runtime policy.
• MarchingCubes and DistributedClosestPoint classes identify domains by their state/domain_id parameters if provided, or the local iteration index if not.
• MarchingCubes and DistributedClosestPoint classes changed from requiring the Blueprint coordset name to requiring the Blueprint topology name. The changed interface methods are:
  • DistributedClosestPoint::setObjectMesh
  • DistributedClosestPoint::computeClosestPoints
  • MarchingCubes::MarchingCubes
  • MarchingCubesSingleDomain::MarchingCubesSingleDomain
• Primal: Polyhedron::volume() function changed from returning a signed volume to an unsigned volume. The added Polyhedron::signedVolume() function returns the signed volume.
• Primal: intersection_volume() operators changed from returning a signed volume to an unsigned volume.
• Primal's BoundingBox::contains(BoundingBox) now returns true when the input is empty
• Renamed axom's bit utility functions to conform to C++20 standard: popCount() -> popcount(), trailingZeros() -> countr_zero() and leadingZeros() -> countl_zero()
• Renamed axom::utilities::swapEndian() -> byteswap() to conform to C++23 standard

Fixed

• quest's SamplingShaper now properly handles material names containing underscores
• quest's SamplingShaper can now be used with an mfem that is configured for (GPU) devices
• primal's Polygon area computation in 3D previously only worked when the polygon was aligned with the XY-plane. It now works for arbitrary polygons.
• Upgrades our vcpkg usage for automated Windows builds of our TPLs to its 2023.12.12 release
• Fixed a bug in the bounds checks for primal::clip(Triangle, BoundingBox)
• Fixed a bug when loading Sidre groups with attributes that already exist
• Fixed std::locale error when when compiling src/axom/core/utilities/System.cpp using nvcc
• Include cstdint for higher gcc version support (e.g. gcc-13)
• Fixed several memory leaks in axom::Array, quest::Shaping and sidre::MFEMSidreDataCollection

Version 0.8.1 - Release date 2023-08-16

Changed

• Updates to RAJA version 2023.06.0
• Updates to camp version 2023.06.0
• Updates to Umpire version 2023.06.0

Fixed

• Fixed MFEMSidreDataCollection finite element space bug
• Various fixes to CMake machinery

Version 0.8.0 - Release date 2023-07-26

Added

• Adds MarchingCubes class implementing the marching cubes algorithm for surface detection.
• Adds the following methods to axom::Array to conform more closely with the std::vector interface:
  • Array::front(): returns a reference to the first element
  • Array::back(): returns a reference to the last element
  • Array::resize(size, T value): resizes the array, and sets any new elements to value.
• Adds an ArrayView::empty() method to return whether the view is empty or not.
• Adds an area() function to primal::Polygon
• Adds initial support for using Slam types on the GPU
• Adds support for using ArrayViewIndirection indirection policy with slam::Map and slam::BivariateMap
• Adds const_iterator support to slam::BivariateMap and slam::SubMap
• Primal: Adds a Hexahedron primitive
• Primal: Adds a clip() operator for computing the intersection of a Hexahedron and another Tetrahedron as a Polyhedron
• Primal: Adds an intersection_volume() operator for computing the volume of intersection between a primitive and a Tetrahedron
• Primal: Adds a primal::Polyhedron::from_primitive() operator that returns a Polyhedron object from a given primitive.
• Adds DataStore::getBufferInfo() and Group::getDataInfo() methods that insert information into a Conduit Node about buffers in a DataStore object or data in a Group subtree. The information can be accessed from the Node by the caller from specifically named fields in the Node.
• Quest: Adds a quest::ProEReader for reading in Pro/E tetrahedral meshes
• Quest: The quest::IntersectionShaper class can now use a percent error to determine whether the revolved volume for a shape is sufficiently accurate or whether the shape must be further refined. This new dynamic method of shaping complements the existing segment-based curve refinement method and it is activated using Shaper::setRefinementType() and by calling Shaper::setPercentError() to set a refinement error percentage.
• Multimat: adds initial support for fields stored on the GPU. MultiMat::setAllocatorID() or MultiMat::setFieldAllocatorID() can be called to change the memory space in which a field is allocated.
• Multimat: adds an MultiMat::addExternalField() function to support fields where the memory is managed externally. Fields which are externally-managed cannot be transposed between sparse and dense layouts, or moved between allocator spaces.
• Multimat: adds a MultiMat::removeField() function to remove fields from the Multimat instance.
• Multimat: adds an overload of MultiMat::setCellMatRel() that supports setting a multi-material relation in a compressed sparse-row (CSR) representation.
• Quest: Adds ability to import volume fractions into SamplingShaper before processing Klee input
• Slam: adds a slam::MappedVariableCardinality policy to accelerate mapping flat indices back to first-set indices when used in a StaticRelation
• Adds an ArrayView(data, shape, strides) constructor to support column-major and custom striding layouts.
• Adds an ArrayView::subspan() overload for multi-dimensional subspans
• Adds an axom::utilities::insertionSort() method.
• Quest: Adds Pro/E tetrahedral meshes as input to the IntersectionShaper
• Quest: For sample-based shaping, users can register callback functions to modify the input points before querying the spatial index. This allows, e.g. querying 3D points against 2D surfaces of revolution provided as c2c contour files.
• Adds an axom::utilities::locale utility function to guard against platforms that do not have the requested locales via the std::locale function. If the system does not have the requested locale (e.g. en_US.UTF8), it returns the user's default locale.
• Sidre: Add new protocols sidre_layout_json and conduit_layout_json to provide output of DataStore layout in a user-readable format that excludes the numerical arrays held by Views and Buffers.
• Sidre: Add methods to methods for destroying Groups that will also destroy Buffers if the destruction of a Group and the Views in its subtree cause the Buffer to become detached from all Views.
• Sidre: Add two Group methods -- one to return a vector of the valid I/O protocols (based on compilation options), and one that returns a default protocol.
• Klee: Add support in shaping driver and MFEMSidreDataCollection to write Blueprint datasets that contain matset metadata needed for VisIt to treat volume fraction arrays as a material. This enables VisIt plots such as FilledBoundary.

Changed

• Fixed bug in mint::mesh::UnstructuredMesh constructors, affecting capacity. A missing factor was added. If you worked around this by adding the factor yourself, you may want to undo that work-around.
• Updates blt submodule to blt@0.5.3
• Updates uberenv submodule to HEAD of main on 12May2023
• Updates to conduit version 0.8.6
• Updates to mfem version 4.5
• Updates to fmt version 9.1.0
• Updates to c2c version 1.8.0
• The Axom library has been broken down into its component libraries (prefixed with axom_). This change requires no change to downstream CMake users who import our targets. The exported CMake target axom includes all components, but users who do not import our targets will need to create the link line themselves. The following replacement can be used: -laxom -> -laxom_quest -laxom_multimat -laxom_slam -laxom_mint -laxom_klee -laxom_inlet -laxom_sidre -laxom_slic -laxom_lumberjack -laxom_core If you only need a subset of the components, you can now use those targets directly, ie. axom::inlet.
• IntersectionShaper now implements material replacement rules.
• axom::Array move constructors are now noexcept.
• Exported CMake targets, cli11, fmt, sol, and sparsehash, have been prefixed with axom:: to guard against conflicts.
• DistributedClosestPoint query now supports any blueprint-valid mesh format, including multidomain. Domain underloading and overloading can be expressed using multidomain format. Closest points are identified by cp_rank, cp_domain_index, and cp_index. The new cp_domain_index specifies the domain containing the closest point.
• DistributedClosestPoint interfacing variable names closest_point and min_distance have been changed to cp_coords and cp_distance, respectively, to match the naming convention of other interfacing variables.
• Adds vcpkg ports for RAJA, Umpire with optional OpenMP feature for automated Windows build
• Reduce size of ArrayView::subspan to prevent accessing invalid memory.
• Adds vcpkg port for lua as optional dependency on Windows
• Adds additional parameters to quest's PointInCell query to control the Newton solve from physical to reference space for a given element
• Remove function pointer call in IteratorBase::advance()
• Slam: IndirectionPolicy::data() now returns a reference to the underlying buffer Rebinding an indirection to a new buffer is now achieved through IndirectionPolicy::ptr(), which returns a mutable pointer to the buffer.
• Quest: Shaper::applyTransforms() is no longer a public method.
• Multimat: fields are now returned as shallow, device-copyable views of a field instead of full copies of field data.
• Multimat: MultiMat::addField() and MultiMat::setVolfracField() API now use axom::ArrayView to accept data.
• Multimat: Ported field data/sparsity layout conversion methods to GPU.
• Multimat: MultiMat::makeOtherRelation() now runs on the GPU with an appropriately-set allocator ID.
• Multimat: MultiMat::setCellMatRel(counts, indices) now runs on the GPU, and accepts GPU-side data.
• Renames ArrayView::spacing() to ArrayView::minStride().
• Klee: A shape's geometry no longer needs a path field when its format is "none"
• Quest: Shapes without geometry can participate in replacement rules for sample-based shaping. Volume fractions for the associated materials must be supplied before shaping.
• Primal: Expose Polyhedron::getFaces() as public method.
• Removed custom Spack package recipes in favor of using the radiuss-spack-configs repository as a submodule.

Fixed

• Fixed issues with CUDA build in CMake versions 3.14.5 and above. Now require CMake 3.18+ for CUDA/non-gpu builds.
• Fix to allow Axom to build when using RAJA, but not Umpire.
• Checks validity of bounding boxes in primal's intersection operators against planes and triangles before using the geometry.
• Improves import logic for lua dependency
• Improves import logic for mfem dependency in device builds when mfem is configured with caliper
• Fixes ambiguity when calling Array::resize(size, value) for Array<bool>
• Sidre: Group methods hasChildView() and hasChildGroup() changed to return false when Group holds items in list format. This fixes an IOManager issue causing failures for multi-domain meshes when writing Blueprint index file.
• Sidre: Changed Group::copyToConduitNode() method to properly handle Groups using the list format. Previously, it was assumed that all child items in a Group have a name, which is not the case for list format.
• Sidre: Fixed Group method importConduitTreeExternal() to handle lists with unnamed members the same as importConduitTree().
• Slic and Lumberjack: Add missing calls to flush() for parallel output log streams.

Deprecated

• Integer types in src/axom/core/Types.hpp are deprecated because c++11 supports their equivalents.

Version 0.7.0 - Release date 2022-08-30

Added

• Adds a view() method to axom::Array class to simplify creation of a corresponding axom::ArrayView
• Adds GPU/OpenMP support to spin::ImplicitGrid. The following functions run with the user-specified execution space (specified as a template argument on ImplicitGrid):
  • ImplicitGrid::insert(nelems, bboxes): insert a batch of bounding boxes into the implicit grid
  • ImplicitGrid::getCandidatesAsArray(nquery, queryObjs, ...): query the implicit grid for a batch of query objects, and generate a CSR-format array for the candidates. In addition, ImplicitGrid::getQueryObject() returns an object that may be used within a GPU kernel to query the implicit grid.
• Added initial implementation of GPU/OpenMP-accelerated point-in-cell queries
• Added an alternative surface mesh tester function to Quest, based on ImplicitGrid
• Add const versions of begin() and end() for Array and ArrayView
• Add support for passing compatible custom allocator IDs to axom::Array with explicitly specified memory space
• Adds constructor overloads to axom::Array that uses both uninitialized data (ArrayOptions::Uninitialized) and custom allocators
• Adds a comparison operator (operator<()) to StackArray. This allows it to be used as a key for std::map
• Use compiler intrinsics for axom's bit utility functions: popCount(), trailingZeros() and leadingZeros()
• Adds a random-access iterator to slam::DynamicSet
• Adds an overload to ImpicitGrid::getCandidates() from a grid cell of the lattice. This makes it easier to iterate over the bins of the spatial index.
• Defines iterator traits on axom::Array<T>/ArrayView<T> iterators, to allow passing iterator pairs to standard library functions
• Adds full support for calling methods on axom::Array<T> allocated in device-only memory.
• Adds ability to index into subarrays of a multidimensional axom::Array<T> using operator[] and operator()
• Adds ability to build axom using the hip compiler. Support for running device kernels with hip will be added in the future.
• Adds new host-configs for HIP on LLNL platforms
• Adds GPU/OpenMP support to spin::UniformGrid. The following functions run with a user-specified execution space (specified as a template argument on UniformGrid):
  • UniformGrid::initialize(): creates/re-creates a uniform grid with an array of objects and their corresponding bounding boxes
  • UniformGrid::getCandidatesAsArray(): query the uniform grid for objects that share a grid cell with the query bounding box In addition, UniformGrid::getQueryObject() returns an object that may be used within a GPU kernel to query the uniform grid.
• Adds ability to specify a storage policy in UniformGrid. Two policies are provided:
  • DynamicGridStorage stores the bins as an array of arrays (default)
  • FlatGridStorage stores the bins as a flat array of elements, where each bin is a slice of the array
• Adds a templated uniform grid-based surface mesh tester function to Quest
• Adds an initializer list constructor and assignment operator to axom::Array
• Adds an overload of axom::Array::resize(ArrayOptions::Uninitialized, dims) to support resizes without constructing or initializing new elements
• Adds examples and tests for using Slic interface in Fortran
• Adds examples for using the BVH device traversal API
• Adds a ScatteredInterpolation query to quest, which enables interpolating scalar fields at arbitrary points from a given 2D or 3D point mesh in the Mesh Blueprint format. The current implementation generates a Deluanay complex over the points and performs linear interpolation over the triangle/tetrahedron at the query points.
• Adds a HIP execution policy for device kernels to run on AMD GPU hardware
• Adds new Slic macros that allow you to selectively print messages only on root ranks. For example, SLIC_ERROR_ROOT(msg) and SLIC_ERROR_ROOT_IF(EXP, msg). This can be set via slic::initialize(bool is_root = true) or slic::setIsRoot().
• Adds forward iterators to the Views and Groups of a sidre::Group. These can be accessed via the range-for syntax as for(auto& view: grp.views()){...}, Or using the iterator syntax as for(auto& it = grp.views().begin(), itEnd = grp.views().end(); it ! itEnd ; ++it) {...}, and similarly for the groups of a group.
• Adds forward iterators to the Attributes and Bufferss of a sidre::DataStore, with a similar syntax, e.g. for(auto& buf : datastore.buffers()){...}.
• Adds an overload of ImplicitGrid::getCandidatesAsArray() to accept query points/bounding boxes as an axom::ArrayView.
• Adds a primal::closest_point(point,sphere) overload to find the closest point on a sphere to a given point
• Adds an overload to quest's SignedDistance query to return the closest point on the surface to the query point and the surface normal at that point. Also exposes this functionality in quest's signed_distance C API.
• Adds utility function for linear interpolation (lerp) of two numbers
• Adds utility function to compute binomial coefficients
• Adds a CurvedPolygon class to primal representing a polygon with BezierCurves as edges
• Adds functions to compute the moments (area, centroid) of a CurvedPolygon
• Adds functions to evaluate integrals over BezierCurve and CurvedPolygon objects
• Adds a ArrayViewIndirection storage policy to Slam
• Adds set accessor methods to slam::DynamicVariableRelation
• Adds a new component to Axom, multimat, to simplify the handing of multi-material meshes and fields.
• Adds functions to compute winding numbers and in/out queries for Polygon and CurvedPolygon objects.
• Adds constants.hpp to primal to track geometric constants. Initially includes a value for PRIMAL_TINY, a small constant that can be added to denominators to avoid division by zero.
• DistributedClosestPoint query now supports "domain underloading" -- ranks that are passed in can have empty object meshes and/or empty query meshes
• 'BezierCurve' objects now support Rational Bezier curve functionality
• Primal: Adds a clip() operator for computing the intersection of a Tetrahedron and another Tetrahedron as a Polyhedron
• Added slic::outputLocalMessages() to output messages from the current rank to the console for MPI-enabled LogStreams.

Changed

• Axom now requires C++14 and will default to that if not specified via BLT_CXX_STD.
• Moved bit-twiddling functions to core component
• axom::Array now default-initializes its data by default. To create an Array with uninitialized elements, pass an axom::ArrayOptions::Uninitialized as the first constructor argument.
• axom::ArrayView<const T> can now be created from a const Array<T>
• Added new ExecSpace template parameter to spin::ImplicitGrid. ExecSpace is now the second template parameter (out of three) and defaults to axom::SEQ_EXEC.
• Instead of saving the entire DataStore, MFEMSidreDataCollection will now save only its domain and global groups
• When an inlet::Field fails a range or valid value constraint, the provided value and corresponding range/set of valid values are now included in the error message
• IOManager::write now allows the calling code to pass in the full name of the root file that it will produce
• Improved consistency of orientation operations in primal::Plane, primal::Sphere, primal::orientation() and primal::in_sphere()
• Improved efficiency for primal::in_sphere() -- the computations are now based on (D+1)x(D+1) determinants instead of (D+2)x(D+2) determinants for D-dimensional spheres
• Improved efficiency for (signed) area/volume functions of primal::Segment, primal::Triangle and primal::Tetrahedron
• Updates interface for primal::Sphere to use more of primal, e.g. uses primal::Point instead of T* to represent points
• Adds circumsphere() functions to primal::Triangle and primal::Tetrahedron to return the Sphere that circumscribes the triangle/tetrahedron's vertices
• Adds operator overloads to subtract a primal::Vector from a primal::Point to yield a new primal::Point
• Consolidates quest::findTriMeshIntersections*() implementations for BVH and ImplicitGrid
• BVH::find*() batch functions now return the total number of candidate intersections found
• Enables empty axom::Array<T> to be iterated over with begin()/end()
• Removed AXOM_VERSION_EXTRA in favor of axom::gitSHA() and adding the SHA to axom::getVersion() and axom::about()
• Use more specific type trait checks in ArrayOps, to avoid generating unnecessary copies in fill/destroy operations on otherwise trivially-copyable/destructible types.
• axom::Array now consistently propagates the allocator ID on copy, move, and swap operations when possible. This is a breaking change; copy-construction of a dynamic array from a device array will no longer automatically move the array to host memory, and will instead maintain the same allocator ID as the source array.
• The device traversal method BVH::TraverserType::traverse_tree() now supports passing in arbitrary query objects for BVH traversal.
• Moved inlet::LuaReader::solState() to be a protected function that now returns a std::shared_ptr<axom::sol::state>. This is an advanced feature that could cause users to break an input file state after verification. This also allows us to not expose axom/sol.hpp to all users of Inlet. This greatly reduces compile times. Using this feature requires both a derived class and including axom/sol.hpp in the user code.
• Renamed some overloads of function createView of axom::sidre::Group which accept int ndims, IndexType *shape arguments to be createViewWithShape or createViewWithShapeAndAllocate.
• Replaced an unused older incarnation of iterators in sidre with a new std-compliant implementation
• Removed an out-of-date manually-generated header file in sidre sidre/core/sidre.hpp. We recommend using the automatically generated header file axom/sidre.hpp to include sidre functionality.
• Removed functions from sidre::ItemCollection base class that were not common to all derived classes and added a new derived class sidre::IndexedCollection
• Spin: BVH::findPoints/Rays/BoundingBoxes() candidate search methods now accept an axom::ArrayView<IndexType> for the offsets and counts output arrays, and return candidates as an axom::Array<IndexType>.
• Renamed primal::Polygon::centroid() to primal::Polygon::vertexMean() because it was not actually computing the centroid.
• axom:sidre:IndexType is now the same type as axom:IndexType. Before, Sidre always used int64_t. Now it respects the define AXOM_USE_64BIT_INDEXTYPE.
• Mint now depends on the Slam component.
• Renames indirection policies in slam: The c-array indirection policy was renamed from ArrayIndirection to CArrayIndirection and the axom::Array-based indirection policy was renamed from CoreArrayIndirection to ArrayIndirection.
• Mfem dependency updated to 4.4
• primal::detail::intersect_ray now correctly identifies intersections between collinear Segment and Ray objects.
• Improved efficiency and robustness of barycentric coordinate and circumsphere computation for Triangles and Tetrahedra.

Fixed

• Fixed a bug relating to swap and assignment operations for multidimensional axom::Arrays
• Fixed over-eager caching of restored mfem::FiniteElementSpaces in sidre::MFEMSidreDataCollection
• Fixed a bug in which Inlet verification bails out on the first failure, which resulted in incomplete error lists
• Fixed a bug in quest::PointInCell when not using RAJA
• Fixed a potential memory leak in axom::Array<T> for non-trivial types T which allocate memory
• Added a guard in axom::ArrayList for axom configurations without Umpire to fix a compiler error (XL compiler)
• Inlined some fully specialized functions in quest::Delaunay to avoid "multiply-defined" linker errors
• Fixed axom::Array<T> fill operations on uninitialized memory
• Fixed behavior of axom::Array<T>::resize(new_size) with new_size < curr_size
• Fixed computation of signs in quest::SignedDistance when closest point is along an edge with a sharp dihedral angle and the adjacent triangles have significantly different areas
• Fixed bug in axom::Path that ignored the leading delimiter character if one was present
• Fixed gcc compiler errors in configurations without RAJA or Umpire
• Fixed axom::Array<T> behavior on copy-construction when T is a non-trivial type
• Replaced using statement in SidreDataTypesIds.h with typedef since C syntax is required in this file.
• Fixed bug on two-dimensional sidre::Array<T> construction where the size is set to the underlying buffer capacity, instead of the actual number of elements
• Fixed axom::Array<T>::insert behavior with non-trivial types.
• Fixed bug in Slic macros for MPI-based LogStreams not aborting when using collective Error or Warning macros

Version 0.6.1 - Release date 2021-11-17

Added

• Added a config variable, AXOM_DEBUG_DEFINE to control whether the AXOM_DEBUG compiler define is enabled. By DEFAULT, it is enabled for Debug and RelWithDebInfo configurations, but this can be overriden by setting AXOM_DEBUG_DEFINE to ON or OFF.
• axom::Array is now GPU-compatible, in particular via a memory space template parameter and via extensions to axom::ArrayView that allow for copying into kernels and transfers between memory spaces.
• Adds some utility arithmetic operators for adding and subracting primal::Points and primal::Vectors

Changed

• Renamed AXOM_NOT_USED macro to AXOM_UNUSED_PARAM for better consistency with other Axom macros
• Added explicit to axom::Inlet::InletVector constructors and added a constructor that accepts a double*
• AXOM_ENABLE_MFEM_SIDRE_DATACOLLECTION configuration option is now ON by default (rather than OFF). This option should be disabled if mfem was configured with MFEM_USE_SIDRE.

Fixed

• The AXOM_DEBUG compiler define is now properly exported via the axom CMake target when it is enabled
• Added tolerance parameter EPS to primal::closest_point() operator. This effectively snaps closest points to the triangle boundaries vertices and edges when they are within EPS, improving consistency when, e.g., querying multiple triangles from the same mesh.
• Fixed regression in SignedDistance queries for query points closest to edges or vertices of the input triangle mesh
• Guard fmt's compiler defines from clashing with downstream fmt's.

Version 0.6.0 - Release date 2021-11-04

Added

• Added new CMake option to allow users to turn off Axom created tools: AXOM_ENABLE_TOOLS
• Inlet can now log verification errors to a user-processable list instead of using Slic
• Sidre parallel I/O: Added new mapping arrays to the automatically-generated Blueprint index to support new schema for multi-domain parallel meshes.
• Added support for optional third-party c2c ("contours to codes") library for parsing 2D spline data. c2c is currently only available for Axom configurations on LLNL platforms.
• Primal's intersect(Ray, Segment) can now return the parametric coordinates of the intersection along both the ray and the segment (when the intersection exists)
• Primal's intersect(Segment, BoundingBox) can now return the parametric coordinates bounding the portion of the segment contained within the BoundingBox (when the intersection exists)
• Generalizes Quest's InOutOctree class to work with 2D line segment meshes. Previously, it only worked with 3D triangle meshes
• Added support for reading c2c ".contour" files in Quest. Contours that enclose a 2D region can be linearized into line segment meshes and loaded into Quest's InOutOctree for in/out queries.
• Updated the Quest inout C API to support 2D queries using the c2c library, when Axom is configured with c2c
• Updated the C++ Quest "containment" example to support 2D in/out queries (in addition to the already supported 3D queries)
• Added axom::Array modeled after std::vector. Previous axom::Array renamed to axom::MCArray. Future changes to both arrays are expected.
• Added a data_collection_util tool to generate Mesh Blueprint compliant high order distributed meshes from an mfem mesh or over a Cartesian domain
• Added utility functions axom::utilities::getHostName() and axom::utilities::getUserName().
• Added new axom::primal::ZipIterable<T> type to convert structure-of-arrays data to a given Primal geometric primitive.
• Quest: Added a computeDistances() function to SignedDistance class for batched signed-distance queries.
• Spin: Added a getTraverser() function to BVH, enabling the customized traversal of a BVH from within a device kernel.
• Primal: Adds an Octahedron primitive
• Primal: Adds a Polyhedron primitive for representing convex polyhedra bounded by planar polygons in 3D
• Primal: Adds a clip() operator for computing the intersection of a Tetrahedron and an Octahedron as a Polyhedron
• Klee: Adds a new component, klee, for specifying non-conformal shape overlays for materials onto simulation meshes. This component defines a schema for defining, transforming and overlaying 2D and 3D shapes and validates klee input files. See the klee documentation for more information.
• Quest: Adds a new query for sampling-based "shaping" onto low- or high-order computational meshes
• Quest: Adds a new query for intersection-based "shaping" of revolved contours onto 3D hexahedral meshes. This capability uses a RAJA policy operate on various execution spaces (host, openmp, device).
• Quest: Adds a "shaping" example for embedding a klee specification onto an MFEM mesh
• Added Sidre function View::clear().
• Core now provides an axom::ArrayView that provides view/indexing semantics over a raw pointer. This replaces the external buffer logic previously provided by axom::Array.

Changed

• MFEMSidreDataCollection now reuses FESpace/QSpace objects with the same basis

• Harden configuration options for BLT tools (style, code quality, etc.) against accidentally being enabled for users. Developers will always give a full path (e.g. CLANGFORMAT_EXECUTABLE)

• Inlet: Writers are passed directly to Inlet::write instead of being registered

• Inlet objects can now be constructed without a user-provided sidre::DataStore

• Conduit version changed to v. 0.7.2

• Renames AXOM_DEBUG_VAR macro to AXOM_UNUSED_VAR since there were many cases where the latter was not the appropriate name. This macro elides warnings about unused variables

• Inlet's isUserProvided can now be used to query the status of subobjects of a Container via a name parameter

• Upgrades our vcpkg usage for automated Windows builds of our TPLs to its 2021.05.12 release

• Upgrades built-in cli11 library to its v1.9.1 release

• Quest's inout C API has two new functions: inout_set_dimension() and inout_set_segments_per_knot_span(). The latter is only applicable for 2D queries on c2c contours

• Spin: Refactored BVH public API based on user suggestions BVH constructor only handles setting up default values, while the actual building of the BVH is now done in a BVH::initialize(primal::BoundingBox*, int) method. Alternate Umpire allocator IDs are supplied via BVH::setAllocatorID(int). Other BVH methods have been modified to accept or return Primal primitives.

• Spin: Removed hard dependency on RAJA and Umpire from BVH.

• Moved slam::IteratorBase to axom::IteratorBase.

• sidre::Array now derives from axom::MCArray.

• axom::Array is now multidimensional; it intends to behave like std::vector in the 1D case and numpy.ndarray in the multidimensional case

• Quest: SignedDistance has been modified to use spin::BVH instead of BVHTree. This enables signed-distance queries to run on the GPU, as specified via a new template parameter.

• Spin: Removed BVHTree class in favor of BVH.

• Quest's signed_distance C API: Removed functions related to old BVHTree class and added functions related to BVH class

  • Removed: void signed_distance_set_max_levels( int maxLevels )
  • Removed: void signed_distance_set_max_occupancy( int maxOccupancy )
  • Added: void signed_distance_set_allocator( int allocatorID )
  • Added: void signed_distance_set_execution_space( SignedDistExec execSpace )

• All built-in third-party libraries (fmt, cli11, sol, and sparsehash) have been guarded to allow downstream users to have their own versions. This includes moving their headers under include/axom instead of include/ and moving their C++ namespace under axom (eg. fmt to axom::fmt). If you don't use our built-n TPLs this has no affect on you, but if you do these are some the changes you will need to make:

  Library	Namespace changes	Header include changes
  fmt	fmt:: → axom::fmt::	#include "fmt/fmt.hpp" → #include "axom/fmt.hpp"
  sol	sol:: → axom::sol::	#include "sol/sol.hpp" → #include "axom/sol.hpp"
  sparsehash	google:: → axom::google::	#include "sparsehash → #include "axom/sparsehash
  cli11	CLI:: → axom::CLI::	#include "CLI11/CLI11.hpp" → #include "axom/CLI11.hpp"

• Moved axom::MCArray and the sidre::Array it was based on into mint as axom::deprecated::MCArray and sidre::deprecated::MCArray, respectively. sidre::Array is now based on axom::Array.

• utilities::string::split now returns a vector instead of using an out-parameter, Inlet's string utilities were moved to Core, and splitLastNTokens was renamed to rsplitN

• axom::Array-related classes have been moved into individual files.

• RAJA dependency updated to 0.14.0

• Umpire dependency updated to 0.6.0. Support for versions prior to v2.1.0 was removed.

• Conduit dependency updated to 0.7.2+ (develop as of Sept 13, 2021). This was required because Spack is now using HDF5's CMake build system.

• Internal BLT dependency updated to 0.4.1

Fixed

• Fixed Primal's intersect(Ray, Segment) calculation for Segments that do not have unit length
• Fixed problem with Cray Fortran compiler not recognizing MSVC pragmas in axom/config.hpp. The latter are now only added in MSVC configurations.
• Fixed bug in Mint's VTK output for fields of type int64 and float
• Improved loading of data collections in MFEMSidreDataCollection
• Added workaround to MFEMSidreDataCollection for C++14 standard library feature that was not available in gcc@4.9.3
• Delayed finalizing reloaded mesh in MFEMSidreDataCollection until after setting the nodal GridFunction (when applicable)
• Transposed R and Z coordinates when linearizing NURBS curves in c2c reader
• Fixed user-reported in/out ambiguity within some InOutOctree cases with grazing triangles

Version 0.5.0 - Release date 2021-05-14

Added

• Added the MFEMSidreDataCollection class for describing MFEM meshes and associated fields. This class was adapted from MFEM's SidreDataCollection and is enabled when Axom is built with MFEM and the AXOM_ENABLE_MFEM_SIDRE_DATACOLLECTION CMake option is enabled.
• Added slic::setAbortFunction to configure a custom callback when Slic aborts.
• Added a batched option to quest's InOutOctree containment query example application. This uses a kernel to test for containment on an array of points. The query uses OpenMP threading, when available.
• Inlet: Added support for user-defined conversions from Inlet tables to user-defined types, and support for arrays of user-defined types
• Added compiler define NOMINMAX to axom/config.hpp.in to avoid problems with the Windows min and max macros.
• Added cpp14 variant to Spack package to allow Inlet::LuaReader to be used more easily.
• Inlet: Added support for string-keyed associative arrays (dictionaries)
• Inlet: Added support for defining and retrieving functions from the input file
• Inlet: Added support for YAML and JSON input files
• Inlet: Added support for mixed-key (integer and string) associative arrays
• Inlet: Added support for deeply nested containers of structs
• Inlet: Added support for void and strings in Lua-defined functions
• Inlet: Added get<std::vector<T>> for retrieving arrays without index information
• Inlet: Added a new Writer for generating JSON schemas which can be used by text editors for autocompletion
• Inlet: SphinxWriter will now document the signature of function callbacks added to a schema
• Axom::Path - New class for performing basic path operations with user-selectable delimiter characters
• Inlet: Added a method to inlet::Inlet that retrieves the set of unexpected names in the input file
• Inlet: Added an option to mark Containers as strict, which fail verification when unexpected entries are present
• Added support in MFEMSidreDataCollection for registering QFunctions (data associated with quadrature points on a mesh)
• Inlet: The internal hierarchy of an Inlet object can be reconstructed from a Sidre group, excluding callback functions
• Added new overloaded version of method sidre::DataStore::generateBlueprintIndex to incorporate new MPI features in conduit and allow for generation of a blueprint index on an under-decomposed parallel mesh
• Added new method sidre::View::importArrayNode to import a conduit::Node holding array data directly into a sidre::View
• Added support for registering material and species sets in MFEMSidreDataCollection. These correspond to matsets and specsets in the Mesh Blueprint

Changed

• Converted Uberenv to a git submodule. We previously vendored a copy of this script.
• The Sidre Datastore no longer rewires Conduit's error handlers to Slic by default. It can be explicitly rewired using the static DataStore::setConduitSLICMessageHandlers() method.
• Inlet: Changed SchemaCreator to an abstract class and added missing functions
• Inlet: Added ability to access the Reader class from Inlet and Sol Lua state from the LuaReader class
• Inlet: Switched accessor interface to match that of the STL with operator[] and T get<T>()
• Inlet: std::shared_ptr<T> has been replaced with T& in non-owning contexts and std::unique_ptr<T> in owning contexts - specifically, within Inlet's internal tree structure
• Unified core and SPIO unit tests into fewer executables to limit size of build directory
• Renamed axom::slic::UnitTestLogger to axom::slic:SimpleLogger because it's used in more than just unit tests.
• Inlet: Input file functions can now be of arbitrary signature subject to type and arity restrictions
• Exported all symbols on Windows by default when compiling a dynamic library
• Updated TPL conduit to version 0.6.0 released Nov 2, 2020.
• Updated built-in TPL sparsehash to version 2.0.4 released Aug 11, 2020.
• Inlet: Exposed primal::Vector in Lua for use in input-file-defined functions
• The MFEMSidreDataCollection will now reconstruct fields and the mesh when a datastore is Loaded in
• Inlet: Cleaned up Table interface to eliminate ambiguity and duplicated functionality
• Inlet: Renamed DocWriter to Writer and refactored its interface
• Inlet: Renamed Table to Container
• Inlet collections of mixed or incorrect type will now fail verification, even if they're not marked as required
• Required Inlet collections no longer fail Inlet verification if they are empty in the input file
• Inlet: operator bool for Field and Container has been replaced with more precise isUserProvided and exists, which also returns true if a default value was specified.
• Updated built-in TPL fmt to master branch snapshot, March 26, 2021.
• Inlet: SphinxWriter will now print only one element schema per container instead of printing the same schema for each element in the container
• Updated BLT to version 0.4.0 released 9 Apr 2021
• Updated MFEM to version 4.2 released 30 Oct 2020. Axom no longer requires MFEM to be built serially
• The macro for exporting symbols is now AXOM_EXPORT instead of AXOM_API
• Updated Conduit to v0.6.0
• Updated SCR to compatibility with v3.0rc1

Fixed

• Updated to new BLT version that does not fail when ClangFormat returns an empty version string. BLT/Axom now issues a warning and disables the style build target if version is unknown or wrong.
• Inlet: Apply lambda verifiers on generic containers to individual elements for consistency
• Inlet: Fixed a bug relating to nested table lookups of primitive arrays and functions
• Fixed a bug relating to deeply nested callback functions in Inlet
• Inlet: Always ignore primitive array elements that do not match the requested type
• Inlet: Empty structs/collections of structs with required sub-elements no longer fail verification
• Quest: Fixed a bug with InOutOctree for triangles that lie on faces of octree blocks
• Updated to use newer Conduit config directory
• Add support for legacy hdf5 cmake build system

Version 0.4.0 - Release date 2020-09-22

Added

• Exposed the tolerance parameter EPS that is used to determine intersections between triangles in primal:intersect() as an optional final parameter.
• Added BVH spatial index option to the mesh_tester utility for calculating triangle-triangle intersection.
• Added axom::execution_space< ExecSpace >::onDevice() to check if execution space is on device.
• Added Axom macro AXOM_SUPPRESS_HD_WARN to silence host device compiler warnings.
• Added option to quest's SignedDistance class and C API to toggle whether the distance query computes the sign.
• Added a batched option to quest's signed distance query example application. This computes all distance queries on an array of points using a single call to computeDistance. The query uses OpenMP threading, when available.
• Added new component, Inlet, to assist in retrieving and storing data from an input deck.
• Added the ability to specify an Umpire allocator ID to use with the BVH. This allows the application to use a device allocator for the BVH and avoid use of Unified Memory (UM) on the GPU, which can hinder perfomrmance, or use a pool allocator to mitigate the latencies associated with allocation/deallocation. The allocator ID is specified as an optional argument to the BVH constructor.
• Added new CMake option, AXOM_ENABLE_ANNOTATIONS, to enable/disable code annotations in Axom. Default is OFF.
• Added Axom annotation macros. The macros can be used to annotate functions, using the AXOM_PERF_MARK_FUNCTION macro, or at a more fine grain level, different sections of code can be annotated by wrapping them within an AXOM_PERF_MARK_SECTION block. As a first cut, this works with NVTX tools. However, the hooks are in place to add support for Caliper in the future.
• Added a simple interface to NVTX that allows an application to set the color and category for NVTX ranges corresponding to annotated code in Axom. The application can now call axom::nvtx:set_color() and axom::nvtx::set_category() to set the corresponding parameters respectively. This facilitates in the performance evaluation by allowing developers to easily filter out calls by category or visually by setting a different color to use in GUI tools, such as, NVVP and NSight.
• Added a portable floating_point_limits traits class, to return min(), max(), lowest() and epsilon() of a float or double type. The functionality is equivalent to that provided by std::numeric_limits, but, the code is host/device decorated accordingly such that it can also be called on the device.
• Added initial support for ray queries using the BVH. The caller may now supply a set of rays to a BVH and the BVH will return a set of candidate BVH bins that intersect each ray.
• Added initial support for bounding box queries using the BVH. The caller may now supply a set of bounding boxes to a BVH and the BVH will return a set of candidate BVH bins that intersect each bounding box.
• Added an axom-config.cmake file to axom's installation to streamline incorporating axom into user applications. See <axom-install>/examples/axom for example usages.
• Added Sol as a built-in TPL for fast and simple C++ and Lua binding. Sol is automatically enabled when LUA_DIR is found. The version of Sol used in this release is v2.20.6, which requires C++14.

Removed

• Removed the AXOM_ENABLE_CUB option, since CUB is no lonher used directly in Axom code. Instead, we use RAJA::stable_sort with RAJA-v0.12.1 and fallback to std::stable_sort with older versions of RAJA and when the code is built without RAJA.

Changed

• Updated Axom to support RAJA-v0.12.1 and Umpire-v4.01, but the code remains backwards compatible with previous versions of RAJA and Umpire.
• Transitioned Axom's code formatting tool from Uncrustify to clang-format. Axom's clang-format rules depend on clang 10.
• Modified the command line interface for mesh_tester utility. Interface now uses a -m, --method option to select the spatial index, and -p, policy option now accepts a string or integer value.
• Renamed the AXOM_USE_MPI3option to AXOM_ENABLE_MPI3 for consistency.
• Modified the API for the BVH to accomodate different query types. The queries are now more explicitly called BVH::findPoints() and BVH::findRays().
• Modified the API of Axom's memory management routines to not leak usage of Umpire. Instead of passing an umpire::Allocator object to specify an allocator, we now use the corresponding integer ID associated with the allocator.
• All names in the C API now preserve the case of the C++ function. ex. SIDRE_datastore_new is now SIDRE_DataStore_new.
• Fortran API in slic module. axom::slic::message Level enums are changed from enum-name_enumerator to namespace_enumerator. ex. level_error is now message_error.
• Fortran derived-type constructors are now generic functions named afer the derived type. datastore_new is now SidreDataStore iomanager_new is now IOManager

Fixed

• Fixed a bug in primal::intersect(Segment, BoundingBox) and added regression tests.
• Spin's octrees can now be used with 64-bit indexes. This allows octrees with up to 64 levels of resolution when using a 64-bit index type.
• Resolved issue with AXOM_USE_64BIT_INDEXTYPE configurations. Axom can once again be configured with 64-bit index types.
• Fixed a triangle-triangle intersection case in primal that produced inconsistent results depending on the order of the triangle's vertices.
• Fixed issue in the parallel construction of the BVH on GPUs, due to incoherent L1 cache that could result in some data corruption in the BVH. The code now calls __threadfence_system() after the parent is computed and stored back to global memory to ensure that the write is visible to all threads.
• Fixed issue in Mint that would cause the clang@9.0.0 compiler to segfault. The mint_cell_types.cpp test was causing a segfault in the compiler. The main issue triggering this compiler bug was the use of constexpr when defining the static cell_info array of structs. The code has been modified to use const instead.
• Fixed issue in Quest's Signed Distance query that would prevent consecutive calls to Quest when MPI-3 shared memory is enabled due to not properly nullifying internal pointers when finalize is called.
• Fixed issue where the BVH would dispatch to the CPU sort() routine when the specified execution policy was CUDA_EXEC async. Now, when the execution policy is CUDA_EXEC the code would correctly dispatch to the GPU sort, using CUB (when CUB is enabled), regardless of whether it's synchronous or asynchronous.
• Fixed issue with missing the bvh_traverse.hpp from the install prefix, which was preventing applications from using the BVH when pointing to an Axom install prefix.
• Fixed usage of cuda kernel policies in Mint. Raja v0.11.0 changed the way max threads launch bounds is calculated. Consequently, a large number of threads was being launched leading to max registry count violation when linking. We are now using fixed kernel size of 256 threads (16x16 in 2D and 8x8x4 in 3D).
• Third-party libraries can now build on the Windows platform through uberenv using vcpkg ("zero-to-axom support on Windows")

Known Bugs

• Encountered a compiler bug on IBM LC platforms when using the IBM XL C/C++ compiler. The issue is manifested in the generate_aabbs_and_centroids method in the spin_bvh.cpp unit test. It seems that the compiler does not handle the lambda capture of the arrays correctly which leads to a segfault. A workaround for the IBM XL compiler is provided.
• There is a known bug in MVAPICH that prevents consecutive creation/deletion of MPI windows. This was encountered on LC platforms when enabling shared memory in the Signed Distance Query. See the corresponding Github Issue for details.

Version 0.3.3 - Release date 2020-01-31

Added

• Define different execution spaces. This refines and consolidates the execution policy concepts from mint and spin, which are now defined in Axom core, such that they can be used by other components.
• Added a generic axom::for_all(), which can be used to write simple parallel loops.
• Added CLI11 command line parser as a built-in third party library.

Changed

• Updated Conduit to v0.5.1
• Updated RAJA to v0.11.0
• Updated Umpire to v2.1.0, which, natively handles zero byte re-allocations consistently. Workaround for older releases of Umpire is in place for backwards compatibility.
• Updated BLT to develop (f0ab9a4) as of Jan 15, 2020
• Set CUDA_SEPARABLE_COMPILATION globally instead of just in a few components.
• Reduced verbosity of quest's InOutOctree in cases where query point lies on surface.
• Changed semantics of axom::reallocate(_, 0) to always return a valid pointer. This matches the semantics of Umpire's reallocate(_, 0). Note: Umpire's PR-292 fixed a bug in its handling of this case and Axom includes a workaround to get the new behavior until we upgrade to Umpire v2.0+.

Fixed

• Fixed a bug in convert_sidre_protocol example. Data truncation functionality now works properly when multiple Views point to the same data.

Version 0.3.2 - Release date 2019-09-22

Added

• Added support in Mint for reading and writing an unstructured mesh in the SU2 Mesh file format. This includes support for both single and mixed cell type topology unstructured mesh types.
• Added a new option to enable/disable use of CUB, AXOM_USE_CUB, which is disabled by default. This allows to disable CUB to circumvent issues encountered with the device linker.
• Added a BezierCurve primitive type to primal. A new intersect operator was also added to compute the intersection points between a pair of Bezier curves of arbitrary order.

Changed

• Updated Raja TPL to v0.9.0
• Updated Umpire TPL to v1.0.0
• AXOM_USE_OPENMP is now being set at configure time accordingly instead of auto-detected based on whether _OPENMP is passed by the compiler. This fixes issues where a host code would compile Axom w/out OpenMP, but, use Axom in parts of the code where OpenMP is enabled.

Fixed

• Fixed usage of Umpire's MemoryResourceType enum in Axom. Axom was assuming that there was a one-to-one correspondance of the entries in the MemoryResourceType enum and the IDs of the predefined allocators. However, this assumption generally does not hold. This version corrects this by explicitly querying the ID of the predefined allocator for a particular resource and using that subsequently in the code.

Version 0.3.1 - Release date 2019-07-22

Added

• Added a new implementation of the Bounding Volume Hierarchy(BVH) spatial acceleration data-structure to spin. The new BVH implementation relies on RAJA and allows for constructing and using the BVH sequentially or in parallel on the CPU or in parallel on the GPU. The new implementation is available only when Axom is compiled with RAJA and Umpire support.
• Added Umpire and RAJA to the spack build.
• Centralized Axom's memory management functions in a separate header and extended them to use Umpire when enabled.
• Added the ability to point Axom to an UMPIRE build by specifying UMPIRE_DIR either in a host-config or at the command line. Axom components can link to Umpire, by specifying "umpire" as a dependency. A simple umpire smoke test is also added for regression testing.
• Added for_all_faces to the mint execution model.
• Added support for face connectivity in the mint UnstructuredMesh class.
• Added support for face data and face connectivity in the mint StructuredMesh classes.
• Added Python module for Quest signed distance interface. See the file src/axom/quest/interface/python/README.md for more information.
• Added capability in sidre IOManager to read files while running on a number of MPI ranks greater than the number of ranks that were used to create the files.
• Users can now set the vertex welding threshold parameter in Quest's In/Out query. This was previously not exposed to the user. The default value is 1E-9.
• Unify all Axom component libraries into one library named axom.
• The routine that checks if a surface mesh is watertight now marks boundary cells. A cell-centered field, named "boundary", is used to mark boundary cells with a value of "1" and "0" otherwise. This facilitates in visually inspecting the surface mesh and identify the problematic regions for the In/Out and SignedDistance queries.

Removed

• Moved mint::Array to axom::Array with sidre storage in sidre::Array; also moved mint::IndexType to axom::IndexType.
• Replaced sidre::SidreLength with sidre::IndexType.
• Replaced usage of std::size_t in sidre with sidre::IndexType.
• Added AXOM_ENABLE_EXPORTS which enables CMAKE_ENABLE_EXPORTS to allow demangled axom function names in stack traces. This option is ON by default in debug builds.

Changed

• Updated conduit TPL to v0.4.0
• Updated mfem TPL to v4.0
• Slam's Set and Relation classes are now parameterized by a PositionType and ElementType. Its Map classes are now parametrized by a SetType.
• Updated the fmt tpl.
• Replaced old quest C-style interface with a new quest inout API. Functions related to the inout point containment query are prefixed with inout_. The new API has an option to set the verbosity of the inout initialization and query.
• Changed sidre::IndexType to be a 64bit signed integer.
• Changed slic::stack_trace to slic::internal::stack_trace which now attempts to output a demangled stack trace.

Fixed

• Axom can once again be configured with AXOM_ENABLE_EXAMPLES=ON and AXOM_ENABLE_TESTS=OFF.
• Quest's vertex welding now works with small welding threshold values (e.g. 1E-20). Welding was previously broken when this value was smaller than 1E-8. This fix also resolved an issue with small grid spacing values in primal's RectangularLattice.

Version 0.3.0 - Release date 2018-08-02

Added

• Added initial implementation of a RAJA-based mesh-aware execution model in Mint. The execution model provides a functional interface for generic traversals and various mesh traversals, e.g., looping over all the nodes or cells of the mesh.
• Added AXOM macros for lambda expressions and host/device decorators
• Added the ability to point Axom to a RAJA build by specifying RAJA_DIR at a host config or at the config-build.py. Axom components can now link RAJA by specifying "raja" as a dependency. A simple RAJA smoke test is also added for regression testing.
• Added isStructured() and isUnstructured() convenience methods to the mint::Mesh object.
• Added support for using MPI-3 on-node shared memory data-structures to store the input surface mesh in quest. Instead of each rank duplicating the mesh data (e.g. node coordinates and cell connectivity), ranks within the same compute node can now share and utilize the same mesh data buffer. This reduces the memory overhead associated with duplicating the mesh at each rank which can be a limiting factor when reading large meshes. This feature is currently only exposed in Quest's signed distance query and requires Axom to be compiled with MPI-3 support (i.e., setting AXOM_USE_MPI3=ON)
• Added the ability to call resize() on a Mint UnstructuredMesh. This functionality was not previously exposed in the UnstructuredMesh API.
• Added support for non-closed surface mesh input to the signed distance query.
• Added new interface for the signed distance query along with corresponding tests and examples.
• Updated to fmt version 5.1.0
• Added AXOM_ENABLE_TESTS which is a CMake dependent option of ENABLE_TESTS
• Added AXOM_ENABLE_DOCS which is a CMake dependent option of ENABLE_DOCS
• Added AXOM_ENABLE_EXAMPLES which is a CMake dependent option of ENABLE_EXAMPLES
• Added jacobi_eigensolve() method for computing the eigenvalues and eigenvectors of real, symmetric matrices.
• Added matrix_norm() operator for computing matrix norms. The implementations supports the p1-norm, infinity-norm and frobenious matrix norm.
• Added eigen_sort() routine for sorting the supplied eigenvalues and corresponding eigenvectors in ascending order.
• Initial integration of Mint and Sidre. Mint can now operate on meshes stored in Sidre and conform to the computational mesh blueprint conventions.
• Added a sphere-sphere intersection test to Primal.
• Added a utility function to Quest to weld vertices in a triangle mesh that are within a given tolerance. After welding, all triangles incident in a vertex have the same index for that vertex. This function has been integrated into the mesh_tester utility.
• Added a bounded All-Nearest-Neighbor query to Quest. This query takes a list of point locations and associated regions, and for each point reports the nearest point in a different region that is no farther than a max search radius.
• Axom now exports sparsehash version 2.0.3. Previously, it was only used internally.
• Added a BitSet class to Slam.
• Added a Tetrahedron primitive to Primal.
• Added an in_sphere operator to Primal, which is a predicate that is used extensively for Delaunay triangulations.

Removed

• Axom no longer depends on the Boost library.
• Removed ENABLE_PYTHON CMake option. Python was only used by Shroud so restricted Python checks to when Shroud generation is enabled
• Removed Lua as a dependency of Axom.
• Removed signed distance query functions from the quest.hpp interface. The signed distance query is supported in its own exclusive interface.
• Removed AXOM_NULLPTR. Use nullptr instead.

Changed

• Simplified the external constructors for the Mint UnstructuredMesh. Specifically, the caller is no longer required to: (a) specify the dimension, which can be computed internaly based on other input arguments, and (b) specify explicitly the capacity for the node coordinate and connectivity arrays. In the more common case, the capacity is equivalent to the associated size when constructing a mesh by supplied external buffers.
• Restructured source directory. #includes will now mirror file structure. For example, '#include "sidre/Group.hpp"' is now '#include "axom/sidre/core/Group.hpp"'.
• The root CMake file for Axom is now located in <axom>/src's root directory, rather than in <axom>
• Prefixed all Axom CMake options with AXOM_ to avoid conflicts
• ENABLE_SPARSEHASH -> AXOM_ENABLE_SPARSEHASH
• ENABLE_ALL_COMPONENTS -> AXOM_ENABLE_COMPONENTS
• ENABLE_<component name> -> AXOM_ENABLE_<component name>
• MINT_USE_64BIT_INDEXTYPE -> AXOM_MINT_USE_64BIT_INDEXTYPE
• MINT_USE_SIDRE -> AXOM_MINT_USE_SIDRE
• CMake minimum is now 3.8 for non-CUDA builds and 3.9 for CUDA builds
• Axom now requires a C++11 compiler.
• Refactored Axom's Matrix/Vector operators and consolidated them in one file.
• Removed overloaded arithmetic operators from the Matrix class to avoid potential negative performance impacts. Applications should use the new matvecops methods for such operations.
• Quest STL reader now returns a status code, indicating whether reading the STL file was successful. Also, the reader now leverages the improved Mint API to reserve storage for mesh and avoid re-allocations when reading the STL mesh data into the Mint mesh.
• Refactored and cleaned up Primal's Sphere class.
• Refactored Mint and removed all STL usage in preparation for GPUs.

Fixed

• Fixed minor memory leak in quest fortran example
• Bugfix for "multiply-defined" linker error in slam::Bitset and quest::PointInCellTraits

Version 0.2.9 - Release date 2018-03-08

Added

• Updated to conduit version 0.3.1
• Updated to shroud version 0.8.8
• Improved platform support for LLNL's blue_os and bg/q systems. Axom now builds with Fortran enabled using the xlc and clang compilers.
• Improved support for Axom on Windows, including new host-configs for Microsoft's Visual Studio compiler and for the intel compiler on Windows. All Axom components can now be built on Windows, but we do not yet support hdf5 or Fortran on Windows.
• Added geometric Plane primitive to Primal. The Plane defines an oriented plane in 2D and 3D and provides support for operations such as projection of a point to a plane, signed distance and orientation.
• Added ability to configure Axom (in particular Sidre and Spio) without hdf5.
• Improved testing of Scalable Checkpoint Restart (SCR) library in Sidre.
• Added a Point-In-Cell query to Quest. The Point In Cell query finds the cell in a computational mesh that contains an arbitrary point in space. If such a cell exists, it also finds the isoparametric coordinates of the point with respect to the cell. The query supports higher order mfem meshes.
• Added cross-product and linspace operators to the vector utilities in numerics

Changed

• The root cmake file for Axom is now located in <axom>'s root directory, rather than in <axom>/src
• primal is no longer a header-only library.
• Modified quest API to allow using a mint mesh that is already resident in memory.

Fixed

• Fixed a divide-by-zero problem in primal::intersect()
• Fixed the calculation of the Jacobian in mint::FiniteElement to support elements that are in higher-dimensional ambient space, e.g., surface elements, a Triangle or Quad in 3D.

Legend for sections

Added

• Use this section for new features

Changed

• Use this section for changes in existing functionality

Deprecated

• Use this section for soon-to-be removed features

Removed

• Use this section for now removed features

Fixed

• Use this section for any bug fixes

Security

• Use this section in case of vulnerabilities