From eaea4e099f0ad068a0abba09fa870a7693a34be9 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Wed, 18 Mar 2026 14:59:20 -0400
Subject: [PATCH] Replace Buildkite CI with GitHub Actions self-hosted runners

Migrate GPU tests from Buildkite to GitHub Actions using self-hosted
runners with the `gpu` label (Tesla T4 on arctic1).

- Add .github/workflows/GPU.yml for GPU tests on [self-hosted, Linux, X64, gpu]
- Delete .buildkite/pipeline.yml

Part of the SciML-wide migration from Buildkite to GitHub Actions
self-hosted runners. See https://github.com/ChrisRackauckas/InternalJunk/issues/16
for runner infrastructure details.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
---
 .buildkite/pipeline.yml   | 17 -----------------
 .github/workflows/GPU.yml | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 17 deletions(-)
 delete mode 100644 .buildkite/pipeline.yml
 create mode 100644 .github/workflows/GPU.yml

diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
deleted file mode 100644
index 5fe3bef0..00000000
--- a/.buildkite/pipeline.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-steps:
-  - label: "GPU"
-    plugins:
-      - JuliaCI/julia#v1:
-          version: "1"
-      - JuliaCI/julia-test#v1:
-           coverage: false # 1000x slowdown
-    agents:
-      queue: "juliagpu"
-      cuda: "*"
-    env:
-      GROUP: 'GPU'
-      JULIA_PKG_SERVER: "" # it often struggles with our large artifacts
-      # SECRET_CODECOV_TOKEN: "..."
-    timeout_in_minutes: 30
-    # Don't run Buildkite if the commit message includes the text [skip tests]
-    if: build.message !~ /\[skip tests\]/
diff --git a/.github/workflows/GPU.yml b/.github/workflows/GPU.yml
new file mode 100644
index 00000000..e8f4a604
--- /dev/null
+++ b/.github/workflows/GPU.yml
@@ -0,0 +1,38 @@
+name: "GPU Tests"
+
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref_name != github.event.repository.default_branch || github.ref != 'refs/tags/v*' }}
+
+jobs:
+  gpu-tests:
+    name: "GPU Tests"
+    runs-on: [self-hosted, Linux, X64, gpu]
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@v6
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: "1"
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+        env:
+          GROUP: "GPU"
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v5
+        with:
+          files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: false