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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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3 changes: 3 additions & 0 deletions deepspeed/pt/deepspeed_run.py
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Original file line number Diff line number Diff line change
Expand Up @@ -239,6 +239,9 @@ def main(args=None):
resource_pool['localhost'] = device_count
args.master_addr = "127.0.0.1"
multi_node_exec = False
elif len(resource_pool) == 1:
# Only launching on 1 node
multi_node_exec = False

if not multi_node_exec and args.num_nodes > 1:
raise ValueError("Num nodes is >1 but no extra nodes available via hostfile")
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