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xc-llm-ascend/vllm_ascend/worker/v2/utils.py

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from contextlib import contextmanager
import torch
@contextmanager
def torch_cuda_wrapper():
ori_event = torch.cuda.Event
ori_stream = torch.cuda.Stream
ori_default_stream = torch.cuda.default_stream
ori_current_stream = torch.cuda.current_stream
ori_graph_pool_handle = torch.cuda.graph_pool_handle
ori_cuda_graph_cls = torch.cuda.CUDAGraph
ori_cuda_graph_func = torch.cuda.graph
try:
torch.cuda.Event = torch.npu.Event
torch.cuda.Stream = torch.npu.Stream
torch.cuda.default_stream = torch.npu.default_stream
torch.cuda.current_stream = torch.npu.current_stream
torch.cuda.graph_pool_handle = torch.npu.graph_pool_handle
torch.cuda.CUDAGraph = torch.npu.NpuGraph
torch.cuda.graph = torch.npu.graph
yield
finally:
# revert back torch cuda properties, so it will still raise error
# to call cuda ops in npu environment.
torch.cuda.Event = ori_event
torch.cuda.Stream = ori_stream
torch.cuda.default_stream = ori_default_stream
torch.cuda.current_stream = ori_current_stream
torch.cuda.graph_pool_handle = ori_graph_pool_handle
torch.cuda.CUDAGraph = ori_cuda_graph_cls
torch.cuda.graph = ori_cuda_graph_func