update reranker model

Author: 545999961

FlagEmbedding/flag_reranker.py

@@ -324,7 +324,7 @@ def __init__(
         self.model = AutoModelForCausalLM.from_pretrained(model_name_or_path,
                                                           cache_dir=cache_dir,
                                                           trust_remote_code=True,
-                                                          torch_dtype=torch.bfloat16 if use_bf16 else False)
+                                                          torch_dtype=torch.bfloat16 if use_bf16 else torch.float32)
 
         self.model_name_or_path = model_name_or_path
         self.cache_dir = cache_dir