Support current vLLM StatelessProcessGroup constructors - #102
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weixiao-huang merged 1 commit intoAug 12, 2026
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Preserve compatibility with older vLLM releases that require the socket argument while constructing newer vLLM process groups without it. Co-authored-by: OpenAI Codex <codex@openai.com>
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Current vLLM releases removed the
socketargument fromStatelessProcessGroup, while older releases still require it. Detect the constructor signature at the compatibility boundary so checkpoint-engine works with both APIs.This does not change transfer behavior. It only centralizes construction for the NCCL and HCCL adapters and adds focused tests for both signatures.
Validated with checkpoint-engine unit tests and vLLM 0.26 on ROCm.