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GPU: pack FSST metadata into one upload - #9437

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GPU: pack FSST metadata into one upload#9437
joseph-isaacs wants to merge 1 commit into
joe/gpu-fsst-no-metadata-callbacksfrom
joe/gpu-pack-fsst-metadata

Pack GPU FSST metadata into one upload

b7bf156
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CodSpeed HQ / CodSpeed Performance Analysis failed Aug 17, 2026 in 0s

1 benchmark regressed

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 1 improved benchmark
❌ 1 regressed benchmark
✅ 2041 untouched benchmarks
⏩ 46 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
WallTime words_gather_scalar[65536] 8.2 µs 9.4 µs -12.16%
Simulation decompress[u64, (10000, 4)] 402.6 µs 310.6 µs +29.62%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.


Comparing joe/gpu-pack-fsst-metadata (b7bf156) with joe/gpu-fsst-no-metadata-callbacks (6cb8843)

Open in CodSpeed

Footnotes

  1. 46 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.