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docs(cookbook): add GB10 (DGX Spark) MXFP4 cells for Ling-3.0-flash - #36364

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zijiexia merged 4 commits into
sgl-project:mainfrom
JustinTong0323:cookbook-gb10-mxfp4
Aug 27, 2026
Merged

zijiexia merged 4 commits into
sgl-project:mainfrom
JustinTong0323:cookbook-gb10-mxfp4

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@JustinTong0323

@JustinTong0323 JustinTong0323 commented Aug 25, 2026 •

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Adds GB10 (DGX Spark, sm121) as a hardware option for the Ling-3.0-flash cookbook, MXFP4 quant, TP1 on the single chip:

  • low-latency + DSPARK (external draft, --moe-runner-backend flashinfer_mxfp4)
  • high-throughput + spec off

All numbers measured on a real GB10 box with the #33561 head (2f85329efe, includes the SwigluStep clamp fix required for correct output on the SM12x CUTLASS path):

cell c TTFT ms TPOT ms tok/s
dspark 1 2172 9.48 580
dspark 16 71292 38.09 1157
off 1 2069 25.76 324
off 16 21650 106.51 1129

DSPARK decode is ~2.7x faster than greedy at bs=1 on GB10. The spec-off cell's GSM8K is 100% on a deterministic 20-question window; full 1319-question GSM8K runs for both cells are in flight and the dspark accuracy field will be updated when they land.

Verified: mint validate passes; local mint dev renders both cells (config + benchmark table) under hw=gb10.


CI States

Latest PR Test (Base): ✅ Run #33037260605
Latest PR Test (Extra): ❌ Run #33037260462
Latest PR Test (AMD ROCm 7.2): ➖ No AMD PR run found for this commit.

TP1 + flashinfer_mxfp4 on a single GB10 chip, both strategies:
- low-latency + DSPARK (external draft)
- high-throughput + spec off

Measured on GB10 (sm121): speed bench (ISL 8192 / OSL 1024, 80 exact-length
requests, c=1 and c=16) and accuracy notes for both cells; full GSM8K runs
are in flight and will fill the remaining accuracy field.
@github-actions github-actions Bot added the documentation Improvements or additions to documentation label Aug 25, 2026
@JustinTong0323

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Full GSM8K (1319) results are in for both cells:

  • low-latency + DSPARK: 96.36% (stop rate 99.55%, errors 0%)
  • high-throughput + spec off: 96.82% (stop rate 99.62%, errors 0%)

Both consistent with the H200/B200 mxfp4 cells (95.3-96.7%). Cookbook data now complete: deployment configs, speed benches (c=1/16), and full accuracy for both GB10 cells.

- hw id gb10 -> dgx-spark so the selector renders 'DGX Spark' (the id
  already exists in the shared HARDWARE_CATALOG alongside b300/gb300)
- docker image -> lmsysorg/sglang:dev-Ling-3.0-flash (multi-arch incl.
  arm64; verified on GB10: BailingMoeV3 + FlashInfer CUTLASS MXFP4 import
  cleanly). lmsysorg/sglang:latest predates sgl-project#33561 and lacks the model.
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2 participants