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fix: ulimit set in ray.sub #989

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Merged
terrykong merged 1 commit into from
Aug 27, 2025
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fix: ulimit set in ray.sub #989

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5 changes: 5 additions & 0 deletions ray.sub
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,11 @@ DASHBOARD_GRPC_PORT=${DASHBOARD_GRPC_PORT:-52367}
DASHBOARD_PORT=${DASHBOARD_PORT:-8265} # Also used by debugger
DASHBOARD_AGENT_LISTEN_PORT=${DASHBOARD_AGENT_LISTEN_PORT:-52365}

# Setting ulimit is recommended by ray best practices page
# @ https://docs.ray.io/en/latest/cluster/vms/user-guides/large-cluster-best-practices.html
# It's session based and won't affect the system outside the script
ulimit -Sn 65535

# On our clusters, the largest port range on an idle worker appeared between 52369-64607
# (not including the other ports set by this script). So this range is chosen to be
# somewhere in the middle
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