vLLM issue #53796: PD-disaggregation cannot use PCIe P2P for KV transfer on Intel Arc Pro B60

Fields

id

sources/noncuda-vllm-53796-b60-p2p-kv

URL

https://github.com/vllm-project/vllm/issues/53796

Publisher

vllm-project/vllm

Kind

forum

Published

2026-08-25

Accessed

2026-10-03

notes

vllm/vllm-openai-xpu:latest, Arc Pro B60, PyTorch 2.13.0+xpu, XPU runtime 20260000, Level Zero driver 26.18.38308.1-0, IGC 2.34.4, oneCCL 2022.0.0. Intel engineer zhenwei-intel replies that the ze_ipc support in UCX (openucx/ucx#11218) is still unmerged, so there is no supported PCIe P2P path for KV transfer on B60 today.

Notes

vllm/vllm-openai-xpu:latest, Arc Pro B60, PyTorch 2.13.0+xpu, XPU runtime 20260000, Level Zero driver 26.18.38308.1-0, IGC 2.34.4, oneCCL 2022.0.0. Intel engineer zhenwei-intel replies that the ze_ipc support in UCX (openucx/ucx#11218) is still unmerged, so there is no supported PCIe P2P path for KV transfer on B60 today.

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