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moulalis
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Shafi-Hussain
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not setting `UV_EXTRA_INDEX_URL=https://download.pytorch.org/whl/cu128` caused torch+cu126 to be installed.
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Reintroduce support for head dimensions 80 and 112 in CPU attention backend which were previously removed in vllm-project/vllm#27954 but these head dimensions are commonly used by granite models deployed on Z archs. Since these heads are not friendly for Intel AMX instruction set. The implementation now falls back to vec16.
Test Plan
Build Docker image and test using ibm-granite/granite-3b-code-base-2k model which has head size of 80.
Upstream PR - vllm-project/vllm#31968
Main branch PR - #251