Distributed package doesn't have NCCL built in
Package:
torch
50580

Exception Class:
RuntimeError
Raise code
if pg_options is not None:
raise RuntimeError("GLOO options not supported")
pg = ProcessGroupGloo(prefix_store, rank, world_size, timeout=timeout)
_pg_map[pg] = (Backend.GLOO, store)
_pg_names[pg] = group_name
elif backend == Backend.NCCL:
if not is_nccl_available():
raise RuntimeError("Distributed package doesn't have NCCL " "built in")
if pg_options is not None:
assert isinstance(
pg_options, ProcessGroupNCCL.Options
), "Expected pg_options argument to be of type ProcessGroupNCCL.Options"
else:
# default pg_options for NCCL
pg_options = ProcessGroupNCCL.Options()
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Links to the raise (1)
https://github.com/pytorch/pytorch/blob/e56d3b023818f54553f2dc5d30b6b7aaf6b6a325/torch/distributed/distributed_c10d.py#L665NO FIXES YET
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