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Turn off multi-node launch if only 1 node #322

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Merged
jeffra merged 3 commits into from
Aug 18, 2020
Merged

Turn off multi-node launch if only 1 node #322

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0231ce2
turn off multi-node launch if only 1 node
jeffra Aug 17, 2020
2261336
change to support 1 node when filtering nodes
jeffra Aug 18, 2020
19fb2db
formatting
jeffra Aug 18, 2020
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8 changes: 5 additions & 3 deletions deepspeed/pt/deepspeed_run.py
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Original file line number Diff line number Diff line change
Expand Up @@ -247,9 +247,6 @@ def main(args=None):
args.include,
args.exclude)

if multi_node_exec and not shutil.which('pdsh'):
raise RuntimeError("pdsh is not installed, unable to proceed")

env = os.environ.copy()

if not args.master_addr:
Expand Down Expand Up @@ -278,6 +275,11 @@ def main(args=None):
# encode world info as base64 to make it easier to pass via command line
world_info_base64 = encode_world_info(active_resources)

multi_node_exec = len(active_resources) > 1

if multi_node_exec and not shutil.which('pdsh'):
raise RuntimeError("pdsh is not installed, unable to proceed")

if not multi_node_exec:
deepspeed_launch = [
sys.executable,
Expand Down