llamaperf
Sep 17, 2026
Throughput
150.0 t/s gen · 10000.0 tokens/s prompt processing (prefill)Prompt processing measures input prefill speed; it does not tell you the time to first token.
Quant
8 bit

Summary

User reports Qwen3.8 Flash-Next 8-bit on 2 RTX Pro 6000 Blackwell GPUs at 150 t/s decode and 10K t/s prefill. Setup uses peer-to-peer communication, CUDA graphs, tensor parallelism, and both GPUs capped at 500W. The user also runs DeepSeek V4 Flash 0731 with 1M context and room for 4 concurrent requests. User finds the system fast and plans to cancel subscriptions; asks about excluding thinking tokens from Qwen context and other models to try.