add bf16 mixed precision support for NPU (#26163)

Co-authored-by: statelesshz <[email protected]>

src/transformers/training_args.py

@@ -211,7 +211,7 @@ class TrainingArguments:
 
         eval_accumulation_steps (`int`, *optional*):
             Number of predictions steps to accumulate the output tensors for, before moving the results to the CPU. If
-            left unset, the whole predictions are accumulated on GPU/TPU before being moved to the CPU (faster but
+            left unset, the whole predictions are accumulated on GPU/NPU/TPU before being moved to the CPU (faster but
             requires more memory).
         eval_delay (`float`, *optional*):
             Number of epochs or steps to wait for before the first evaluation can be performed, depending on the
@@ -318,7 +318,7 @@ class TrainingArguments:
             installation](https://github.com/intel/intel-extension-for-pytorch).
         bf16 (`bool`, *optional*, defaults to `False`):
             Whether to use bf16 16-bit (mixed) precision training instead of 32-bit training. Requires Ampere or higher
-            NVIDIA architecture or using CPU (use_cpu). This is an experimental API and it may change.
+            NVIDIA architecture or using CPU (use_cpu) or Ascend NPU. This is an experimental API and it may change.
         fp16 (`bool`, *optional*, defaults to `False`):
             Whether to use fp16 16-bit (mixed) precision training instead of 32-bit training.
         fp16_opt_level (`str`, *optional*, defaults to 'O1'):
@@ -344,7 +344,7 @@ class TrainingArguments:
         local_rank (`int`, *optional*, defaults to -1):
             Rank of the process during distributed training.
         ddp_backend (`str`, *optional*):
-            The backend to use for distributed training. Must be one of `"nccl"`, `"mpi"`, `"ccl"`, `"gloo"`.
+            The backend to use for distributed training. Must be one of `"nccl"`, `"mpi"`, `"ccl"`, `"gloo"`, `"hccl"`.
         tpu_num_cores (`int`, *optional*):
             When training on TPU, the number of TPU cores (automatically passed by launcher script).
         dataloader_drop_last (`bool`, *optional*, defaults to `False`):
@@ -855,7 +855,7 @@ class TrainingArguments:
         metadata={
             "help": (
                 "Whether to use bf16 (mixed) precision instead of 32-bit. Requires Ampere or higher NVIDIA"
-                " architecture or using CPU (use_cpu). This is an experimental API and it may change."
+                " architecture or using CPU (use_cpu) or Ascend NPU. This is an experimental API and it may change."
             )
         },
     )
@@ -906,7 +906,7 @@ class TrainingArguments:
         default=None,
         metadata={
             "help": "The backend to be used for distributed training",
-            "choices": ["nccl", "gloo", "mpi", "ccl"],
+            "choices": ["nccl", "gloo", "mpi", "ccl", "hccl"],
         },
     )
     tpu_num_cores: Optional[int] = field(
@@ -1376,6 +1376,15 @@ def __post_init__(self):
                         raise ValueError(
                             "Your setup doesn't support bf16/gpu. You need torch>=1.10, using Ampere GPU with cuda>=11.0"
                         )
+                    elif is_torch_npu_available():
+                        # npu
+                        from .pytorch_utils import is_torch_greater_or_equal_than_1_11
+
+                        if not is_torch_greater_or_equal_than_1_11:
+                            raise ValueError(
+                                "Your setup doesn't support bf16/npu. You need torch>=1.11, using Ascend NPU with "
+                                "`torch_npu` installed"
+                            )
                     elif not is_torch_xpu_available():
                         # xpu
                         from .pytorch_utils import is_torch_greater_or_equal_than_1_12
@@ -1439,6 +1448,7 @@ def __post_init__(self):
             self.framework == "pt"
             and is_torch_available()
             and (self.device.type != "cuda")
+            and (self.device.type != "npu")
             and (self.device.type != "xpu")
             and (get_xla_device_type(self.device) != "GPU")
             and (get_xla_device_type(self.device) != "TPU")
@@ -1447,7 +1457,7 @@ def __post_init__(self):
         ):
             raise ValueError(
                 "BF16 Mixed precision training with AMP (`--bf16`) and BF16 half precision evaluation"
-                " (`--bf16_full_eval`) can only be used on CUDA, XPU (with IPEX) or CPU/TPU/NeuronCore devices."
+                " (`--bf16_full_eval`) can only be used on CUDA, XPU (with IPEX), NPU or CPU/TPU/NeuronCore devices."
             )
 
         if self.torchdynamo is not None: