feat: deterministic sampling #417
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yzh119
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🤖 I have created a release *beep* *boop* --- ## [0.1.4](v0.1.3...v0.1.4) (2024-08-09) ### Features * append attention kernels for fp8 kv-cache ([#420](#420)) ([906c2f5](906c2f5)) * support min_p sampling ([#422](#422)) ([d52f2da](d52f2da)) * deterministic sampling ([#417](#417)) ([0dd801d](0dd801d)) * more sampling operator options ([#431](#431)) ([68df9c4](68df9c4)) * support fused add rmsnorm ([#419](#419)) ([b781513](b781513)) * support fused silu mul ([#427](#427)) ([ea0ba9a](ea0ba9a)) ### Bug Fixes * fix dispatch fp16 type when enable fp8 ([#430](#430)) ([daa5566](daa5566)) * improve numerical stability of sampling kernels ([#429](#429)) ([898d8ea](898d8ea)) ### Other improvements * break up `_kernels` into multiple modules ([#428](#428)) ([8e482d9](8e482d9)) ### Acknowledgement We thank contributions and feedbacks from the community: [@comaniac](https://github.com/comaniac), [@esmeetu](https://github.com/esmeetu), [@LiuXiaoxuanPKU](https://github.com/LiuXiaoxuanPKU), [@peng1999](https://github.com/peng1999), [@xslingcn](https://github.com/xslingcn), [@Yard1](https://github.com/Yard1), [@zhyncs](https://github.com/zhyncs). --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Zihao Ye <[email protected]>
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Our previous sampling kernels relies on cub's BlockScan, which is not deterministic as reported in NVIDIA/cub#454.
This PR implements the deterministic BlockScan using Belloch scan algorithm, which is slower than cub but guarantees determinism.