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[doc] backward compatibility for 0.6.4 #11359

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Dec 20, 2024
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[doc] backward compatibility for 0.6.4 #11359

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5 changes: 5 additions & 0 deletions docs/source/getting_started/debugging.rst
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Expand Up @@ -86,6 +86,11 @@ If GPU/CPU communication cannot be established, you can use the following Python
from vllm.distributed.device_communicators.pynccl import PyNcclCommunicator

pynccl = PyNcclCommunicator(group=gloo_group, device=local_rank)
# pynccl is enabled by default for 0.6.5+,
# but for 0.6.4 and below, we need to enable it manually.
# keep the code for backward compatibility when because people
# prefer to read the latest documentation.
pynccl.disabled = False

s = torch.cuda.Stream()
with torch.cuda.stream(s):
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