Support hidden-dim 3072 for gpt-oss + low_latency kernels - #458
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sphish merged 1 commit intoOct 17, 2025
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Signed-off-by: Varun Sundar Rabindranath <vsundarr@redhat.com>
kenzhangwangshu
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Jul 17, 2026
Bump the mainline DeepEP pin from 9af0e0d (v1.2.1, 2025-09-15) to 567632d, the last commit before the EPv2 repo reorg (sgl-project#605). This picks up deepseek-ai/DeepEP#458 (hidden-dim 3072 low-latency kernels), the use_fabric buffer kwarg (sgl-project#217), and NVSHMEM 3.5 runtime fixes (sgl-project#564), while keeping the pre-reorg layout the Dockerfile build steps expect. Also updates the matching checkout in ci_install_deepep.sh. Context: sgl-project#24502.
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gpt-oss model has a hidden-dim of 2880. At the moment, to transmit tensors of [M, 2880] with DeepEP low_latency kernels , we pad it up to 4096 which is too big of a padding.
This PR adds
3072to the list of low_latency kernels so we may pad up to only3072during model execution.Test
Ref : vLLM PR using gpt-oss with DeepEP Low Latency kernels vllm-project/vllm#25997