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About this paper
Hsin-Chun Yin, Khaled Hamidouche, Ian Ziemba, Arjun Kashyap, Pak Markthub, Subhadeep Bhattacharya, Ke Wen, Assaf Ravid and 2 more
The authors reduce communication in mixture-of-experts inference by moving dispatch-send progression from the GPU to descriptors or a host thread, letting it begin another microbatch’s work sooner. In vLLM decode, three optimized NCCL-EP configurations reduce median output-token time by 15–25% versus default when dual-batch overlap splits reliably; this comparison does not isolate cause or establish wins beyond that setting.
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