implementation detail · filed under inference & serving
Fusion of activation, gating, and reduction into GEMM epilogues
Fuses SiLU, sigmoid, gating, and the final reduction into two GEMM epilogues to avoid intermediate global-memory writes.
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Evidence
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SiLU, Sigmoid, gating, and the final reduction are fused into the two GEMM epilogues, avoiding intermediate writes to global memory.
usedunclearin SGLangSGLang
Filed alongside
Other methods under inference & serving :: inference kernel.
Batch-invariant deterministic kernelsCUDA GraphCUDA Graph capture size reductionFlashAttention 3Kernel fusionMoE-side chunkingSynchronization-free static-shape MoE executionTensorRT-LLM multi-head attention backendAvoiding split-KDeepGEMM-based batch-invariant matrix multiplicationDistributed shared memory for cross-SM attention data exchangeDual-kernel batch-invariant attention decodingDynamic load balancingExp-free TopK kernelExpert-optimized Triton kernelsFA4 sheared-bias attention kernelFlashAttentionFlashAttention 4FlashKDAFP8 GEMMFused AttnRes merge and RMSNorm kernelFused latent down-projection and MoE-router GEMMFused mHC kernelsFused QSA kernel