From 94fa3bd7dcecd826cfa50cf6acc816cf8743c599 Mon Sep 17 00:00:00 2001 From: Mitch Lewis Date: Tue, 13 Jan 2026 18:15:48 -0700 Subject: [PATCH] Revert "[Bugfix] Set `VLLM_ALLREDUCE_USE_SYMM_MEM` default to False (#24696)" This reverts commit 1ec20355f5eaa52b5965bfa01d2348b5ed818750. --- vllm/envs.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/vllm/envs.py b/vllm/envs.py index 8ca7e0f19428..c5688a72e11d 100755 --- a/vllm/envs.py +++ b/vllm/envs.py @@ -1218,7 +1218,7 @@ def get_vllm_port() -> Optional[int]: # Whether to use pytorch symmetric memory for allreduce "VLLM_ALLREDUCE_USE_SYMM_MEM": - lambda: bool(int(os.getenv("VLLM_ALLREDUCE_USE_SYMM_MEM", "0"))), + lambda: bool(int(os.getenv("VLLM_ALLREDUCE_USE_SYMM_MEM", "1"))), # Allows vllm to find tuned config under customized folder "VLLM_TUNED_CONFIG_FOLDER":