#flashinfer

LLM Reddit Mar 16, 2026 2 min read

LocalLLaMA Benchmark Argues RTX PRO 6000 SM120 Is Being Held Back by Broken CUTLASS NVFP4 MoE Kernels

A March 12, 2026 LocalLLaMA benchmark post claims the best sustained decode for Qwen3.5-397B NVFP4 on 4x RTX PRO 6000 Blackwell GPUs is 50.5 tok/s with Marlin, because native CUTLASS grouped GEMM paths on SM120 fail or fall back.

#qwen #blackwell #vllm

LLM Reddit Mar 15, 2026 2 min read

LocalLLaMA Patch Claims Faster Qwen3.5-397B Inference on Blackwell Workstations With a K=64 Kernel Fix

A March 14, 2026 LocalLLaMA post outlined a CUTLASS and FlashInfer patch for SM120 Blackwell workstations, claiming major gains for Qwen3.5-397B NVFP4 inference and linking the work to FlashInfer PR #2786.

#qwen #blackwell #vllm