diff --git a/mm-zero3.sh b/mm-zero3.sh
index eaf2291..7c05e40 100755
--- a/mm-zero3.sh
+++ b/mm-zero3.sh
@@ -1,5 +1,7 @@
-export DS_BUILD_OPS=0
-export DS_SKIP_CUDA_BUILD=1
+# 统一环境（会被 deepspeed 的 ssh 继承到各节点）
+unset DS_BUILD_OPS DS_SKIP_CUDA_BUILD PYTHONNOUSERSITE
+export TORCH_EXTENSIONS_DIR=/tmp/$USER/torch_ext
+
 export PYTORCH_CUDA_ALLOC_CONF="max_split_size_mb:128,expandable_segments:True,garbage_collection_threshold:0.9"
 
 deepspeed --hostfile hostfile \