[Fix Hourly] install UCX from source instead using builtin wheel from nixl #289
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Signed-off-by: Chendi Xue <Chendi.Xue@intel.com>
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✅ CI PassedAll checks passed successfully against the following vllm commit: |
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Oct 2, 2025
… nixl (vllm-project#289) upstream PR introduced the crash: vllm-project/vllm#25380 Root cause: After this PR, nixl < 0.5.1 will not work because of lacking num_threads argument support. However, pip install nixl >= 0.5.1 will also not work because wheel provided UCX is compiled with hard-dependency on libcuda.so Solution is to do nixl installation by build from source. Signed-off-by: Chendi Xue <Chendi.Xue@intel.com> Signed-off-by: Iryna Boiko <iboiko@habana.ai>
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upstream PR introduced the crash:
vllm-project/vllm#25380
Root cause:
After this PR, nixl < 0.5.1 will not work because of lacking num_threads argument support.
However, pip install nixl >= 0.5.1 will also not work because wheel provided UCX is compiled with hard-dependency on libcuda.so
Solution is to do nixl installation by build from source.