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feat(ascend): add disk checkpoint serving patches #431

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feat(ascend): add disk checkpoint serving patches #431

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29 changes: 29 additions & 0 deletions docker/npu_patch/vllm-ascend.patch
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Original file line number Diff line number Diff line change
Expand Up @@ -51,3 +51,32 @@ index a35d9af8d..66a179cd6 100644
+ # stream. Wait before the packing stream reads them in torch.cat.
+ streams[buffer_idx].wait_stream(source_stream)
# Start tasks for the new buffer in a new stream

diff --git a/vllm_ascend/worker/worker.py b/vllm_ascend/worker/worker.py
index b7df4df22..b8b9cfbb1 100644
--- a/vllm_ascend/worker/worker.py
+++ b/vllm_ascend/worker/worker.py
@@ -1287,3 +1287,22 @@ class NPUWorker(WorkerBase):
def reload_weights(self, *args, **kwargs) -> None:
self.model_runner.reload_weights(*args, **kwargs)
-
+
+ def pull_weights(
+ self,
+ local_checkpoint_dir: str,
+ source_dir: str,
+ target_version: int,
+ pre_read_hook: str | None = None,
+ ) -> dict[str, Any]:
+ from vllm.utils.local_checkpoint import pull_checkpoint
+
+ pull_checkpoint(
+ local_checkpoint_dir=local_checkpoint_dir,
+ base_dir=self.model_config.model,
+ source_dir=source_dir,
+ target_version=target_version,
+ pre_read_hook=pre_read_hook,
+ )
+
+ return {"success": True, "weight_version": str(target_version)}
+
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