damccorm commented on code in PR #36420:
URL: https://github.com/apache/beam/pull/36420#discussion_r2478830714


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sdks/python/container/run_generate_requirements.sh:
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@@ -76,14 +76,24 @@ python"${PY_VERSION}" -m venv "$ENV_PATH"
 source "$ENV_PATH"/bin/activate
 pip install --upgrade pip setuptools wheel
 
+# For non-vllm (non-gpu) requirement files, force downloading torch from CPU 
wheels
+INDEX_URL_OPTION="--extra-index-url https://download.pytorch.org/whl/cpu";
+if [[ $EXTRAS == *"vllm"* ]]; then
+  # Explicitly install torch to avoid 
https://github.com/facebookresearch/xformers/issues/740
+  # This should be overwritten later since the vllm extra is installed 
alongside torch

Review Comment:
   Thanks - I agree this was unclear. I was trying to say that the torch 
version we install here doesn't matter since torch will get installed anyways 
later as part of the vllm install (and that will determine the actual version 
which is installed). Hopefully the new comment is clearer



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