Reproducible checkpoint for npu (#27208)

* save NPU's RNG states when saving a checkpoint and set after all the
data skip phase when resuming training.

* re-trigger ci

* re-trigger ci

src/transformers/trainer.py

@@ -144,6 +144,7 @@ from .utils import (
     is_sagemaker_mp_enabled,
     is_torch_compile_available,
     is_torch_neuroncore_available,
+    is_torch_npu_available,
     is_torch_tpu_available,
     logging,
     strtobool,
@@ -2321,6 +2322,17 @@ class Trainer:
                     )
         if is_torch_tpu_available():
             xm.set_rng_state(checkpoint_rng_state["xla"])
+        if is_torch_npu_available():
+            if self.args.parallel_mode == ParallelMode.DISTRIBUTED:
+                torch.npu.random.set_rng_state_all(checkpoint_rng_state["npu"])
+            else:
+                try:
+                    torch.npu.random.set_rng_state(checkpoint_rng_state["npu"])
+                except Exception as e:
+                    logger.info(
+                        f"Didn't manage to set back the RNG states of the NPU because of the following error:\n {e}"
+                        "\nThis won't yield the same results as if the training had not been interrupted."
+                    )
 
     def _save_checkpoint(self, model, trial, metrics=None):
         # In all cases, including ddp/dp/deepspeed, self.model is always a reference to the model we
@@ -2423,6 +2435,12 @@ class Trainer:
         if is_torch_tpu_available():
             rng_states["xla"] = xm.get_rng_state()
 
+        if is_torch_npu_available():
+            if self.args.parallel_mode == ParallelMode.DISTRIBUTED:
+                rng_states["npu"] = torch.npu.random.get_rng_state_all()
+            else:
+                rng_states["npu"] = torch.npu.random.get_rng_state()
+
         # A process can arrive here before the process 0 has a chance to save the model, in which case output_dir may
         # not yet exist.
         os.makedirs(output_dir, exist_ok=True)