From 1ec20355f5eaa52b5965bfa01d2348b5ed818750 Mon Sep 17 00:00:00 2001 From: Wentao Ye <44945378+yewentao256@users.noreply.github.com> Date: Thu, 11 Sep 2025 17:32:27 -0400 Subject: [PATCH] [Bugfix] Set `VLLM_ALLREDUCE_USE_SYMM_MEM` default to False (#24696) Signed-off-by: yewentao256 --- vllm/envs.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/vllm/envs.py b/vllm/envs.py index c5688a72e11d5..8ca7e0f19428d 100755 --- a/vllm/envs.py +++ b/vllm/envs.py @@ -1218,7 +1218,7 @@ environment_variables: dict[str, Callable[[], Any]] = { # Whether to use pytorch symmetric memory for allreduce "VLLM_ALLREDUCE_USE_SYMM_MEM": - lambda: bool(int(os.getenv("VLLM_ALLREDUCE_USE_SYMM_MEM", "1"))), + lambda: bool(int(os.getenv("VLLM_ALLREDUCE_USE_SYMM_MEM", "0"))), # Allows vllm to find tuned config under customized folder "VLLM_TUNED_CONFIG_FOLDER":