llamaperf

DeepSeek V4 Flash 284B (13B active)

on 2× NVIDIA DGX Spark · vLLM · 1,048,576 ctx

NVIDIA hardware
Sep 7, 2026
Throughput
82.0 t/s gen · 1400.0 tokens/s prompt processing (prefill)Prompt processing measures input prefill speed; it does not tell you the time to first token.
Quant
FP8
KV cache
fp8_ds_mla
System RAM
256 GB
VRAM reported
128 GB

Summary

User reports DeepSeek-V4-Flash-0731 (304B MoE) at 82 tok/s decode and about 1400 tok/s prefill on 2x DGX Spark, each with 128GB unified memory. Setup is vLLM 0.26.1rc1 with TP=2, 1M context and FP8. User asks for advice on reducing VRAM and OS RAM usage.