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feat[vortex-cuda]: GPU FSST decompression kernel This commit implements on-GPU decompression of the existing FSST encoding. This kernel achieves ~42% max throughput utilization as compared to the `throughput_cuda` benchmark on a DGX spark. CPU work is required to compute the output offsets. The core performance win is buffering up to 24 bytes of decompressed data in three u64 registers and emitting the widest aligned stores possible up to u128 (st.global.v2.u64). The 256-entry symbol table (≤ 2 KB) is read directly from global memory. Staging it into shared memory measured ~3% slower at 10M rows and ~15% slower at 1M rows. The hypothesis is that L1 already holds the table after a few iterations and the explicit shared copy adds bank-conflict latency on the warp-divergent symbols[code] reads; the gap is wider at 1M because the kernel is less bandwidth-bound there. Further optimizations would require an encoding change. Splits-style intra-string parallelism (one GPU thread per ~32-compressed-byte chunk instead of per-string) was prototyped on top of this kernel and measured an additional +30% kernel throughput at 1M clickbench URLs, +26% at 5M, +12% at 10M. Four kernel variants are generated for the unsigned widths of codes_offsets (u8/u16/u32/u64); signed integer ptypes are reinterpreted as their unsigned equivalent on the Rust side, so the bit pattern is preserved without copying. Signed-off-by: Alfonso Subiotto Marques <alfonso.subiotto@polarsignals.com>

asubiotto/fsst-cuda

13 minutes ago

skip[fuzz]: less jobs to run for fuzzer (#7788) stop oom Signed-off-by: Joe Isaacs <joe.isaacs@live.co.uk>

develop

41 minutes ago

Merge branch 'develop' into ji/less-jobs-fuzz

ji/less-jobs-fuzz

1 hour ago

Fix weird signature of with_slots functions (#7758) with_slots doesn't need to pass the original ref to the arrayinner methods as unique ownership arc is handled earlier Signed-off-by: Robert Kruszewski <github@robertk.io>

develop

2 hours ago

Remove bad action (#7786) ## Summary Accidentally merged this... ## Testing N/A Signed-off-by: Connor Tsui <connor.tsui20@gmail.com>

develop

11 hours ago

Update dependency globals to v17.6.0 (#7768) This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [globals](https://redirect.github.com/sindresorhus/globals) | [`17.5.0` → `17.6.0`](https://renovatebot.com/diffs/npm/globals/17.5.0/17.6.0) | ![age](https://developer.mend.io/api/mc/badges/age/npm/globals/17.6.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/globals/17.5.0/17.6.0?slim=true) | --- > [!WARNING] > Some dependencies could not be looked up. Check the [Dependency Dashboard](../issues/357) for more information. --- ### Release Notes <details> <summary>sindresorhus/globals (globals)</summary> ### [`v17.6.0`](https://redirect.github.com/sindresorhus/globals/compare/v17.5.0...6b15870f1c08b60b5b57afe45a703d9ed0be39bc) [Compare Source](https://redirect.github.com/sindresorhus/globals/compare/v17.5.0...v17.6.0) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Between 12:00 AM and 03:59 AM, only on Monday (`* 0-3 * * 1`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). View the [repository job log](https://developer.mend.io/github/vortex-data/vortex).  Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

develop

11 hours ago

Update release-drafter/release-drafter action to v7.2.1

renovate/all-patch-updates

12 hours ago

Update anthropics/claude-code-action digest to 2cc1ac1

renovate/anthropics-claude-code-action-digest

12 hours ago

Latest Branches

+10%

feat[vortex-cuda]: GPU FSST decompression kernel#7776

5 days ago

46670e8

asubiotto/fsst-cuda

-11%

skip[fuzz]: less jobs to run for fuzzer #7788

1 hour ago

a6babab

ji/less-jobs-fuzz

-19%

Update release-drafter/release-drafter action to v7.2.1#7763

12 hours ago

b27561b

renovate/all-patch-updates

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