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[Fix] Fix distributed POST actor concurrency split #1880

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Merged
zhuzilin merged 2 commits into from
May 9, 2026
Merged

[Fix] Fix distributed POST actor concurrency split #1880

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75d4129
Fix distributed post actor concurrency split
kaysonyu Apr 29, 2026
68723b7
Merge branch 'main' into fix/distributed-post-per-actor-concurrency
zhuzilin May 9, 2026
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8 changes: 4 additions & 4 deletions slime/utils/http_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -221,8 +221,8 @@ def init_http_client(args):
def _init_ray_distributed_post(args):
"""Initialize one or more Ray async actors per node for HTTP POST.

Uses NodeAffinitySchedulingStrategy to place actors on distinct nodes.
Controlled by SLIME_HTTP_POST_ACTORS_PER_NODE.
Uses NodeAffinitySchedulingStrategy to place actors on alive Ray nodes.
Creates ``args.num_gpus_per_node`` actors per node.
"""
global _post_actors
if _post_actors:
Expand Down Expand Up @@ -252,8 +252,8 @@ async def do_post(self, url, payload, max_retries=60, headers=None):

# Create actors per node
created = []
# Distribute client concurrency across actors (at least 1 per actor)
per_actor_conc = (_client_concurrency + len(nodes)) // len(nodes)
total_actors = max(1, len(nodes) * args.num_gpus_per_node)
per_actor_conc = max(1, (_client_concurrency + total_actors - 1) // total_actors)

for node in nodes:
node_id = node["NodeID"]
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