OptCC is a pipelined AllReduce algorithm that completes within 2-6% of fault-free NCCL performance under up to 50% bandwidth loss by approaching a new lower bound showing O(1/p) unavoidable overhead for p GPUs.
Gc3: An optimizing compiler for gpu collective communication
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UniEP fuses MoE communication and computation into unified MegaKernels with deterministic token ordering, delivering 1.03x-1.38x speedups over prior work while preserving training accuracy.
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Don't Let a Few Network Failures Slow the Entire AllReduce
OptCC is a pipelined AllReduce algorithm that completes within 2-6% of fault-free NCCL performance under up to 50% bandwidth loss by approaching a new lower bound showing O(1/p) unavoidable overhead for p GPUs.
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UniEP: Unified Expert-Parallel MoE MegaKernel for LLM Training
UniEP fuses MoE communication and computation into unified MegaKernels with deterministic token ordering, delivering 1.03x-1.38x speedups over prior work while preserving training accuracy.