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perf(cuda): decode FSST strings with GPU-built Arrow offsets - #8921
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Keep FSST in the CUDA-compatible BtrBlocks writer and export decoded strings with standard offset-based Arrow layouts. Build and validate Arrow i32 offsets on the GPU with a generic length conversion and CUB scan, avoiding per-batch length and offset round trips through host memory. Decode device-resident FSST metadata and validity through CUDA so staged files import into cuDF as verified owned strings. Signed-off-by: Alexander Droste <[email protected]>
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robert3005
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Your CUB is not found |
Signed-off-by: Alexander Droste <[email protected]>
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Yeah we have this weird split of building the artefacts on a diff machine than where we run the codspeed benchmarks. |
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Keep FSST in the CUDA-compatible BtrBlocks writer and export decoded strings with standard offset-based Arrow layouts.
Build and validate Arrow i32 offsets on the GPU with a generic length conversion and CUB scan, avoiding per-batch length and offset round trips through host memory. Decode device-resident FSST metadata and validity through CUDA so staged files import into cuDF as verified owned strings.