ydb/library/cpp/dot_product, branch mainMirror of YDB github reposhttps://code.mastervirt.ru/ydb/atom?h=main2026-07-09T19:25:51ZAdd VNNI int8 dot product fast path2026-07-09T19:25:51Zmirali777mirali777@yandex-team.com2026-07-09T18:46:42Zurn:sha1:b7a0527229fb38319bd9f9a55d9e714c34a63b49
Adds AVX512 VNNI runtime dispatch for signed int8 dot products used by Link HNSW distance calculations, with safe fallback to the existing AVX2/SSE implementations. The signed int8 VNNI path corrects the u8*i8 bias per 64-byte chunk so accumulator semantics stay aligned with the existing int8 DotProduct implementation.
Verification:
- `ya make -tt library/cpp/dot_product/ut`
- `ya make library/cpp/dot_product/bench`
- `ya make -r library/cpp/dot_product/bench`
- `ya make -tt library/cpp/dot_product/ut --sanitize=address`
- `ya make -tt library/cpp/dot_product/ut --sanitize=undefined -F 'TDocProductTestSuite::TestDotProduct8' -F 'TDocProductTestSuite::TestDotProduct8VnniEdges' -F 'TDocProductTestSuite::TestDotProductCharStability'`
- `ya make -tt util/system/ut -F TestCpuId`
commit_hash:5624243c26df2a9e067e631477f6c3603ef45626
Use dot library2026-06-28T08:38:22Zdon-drondon-dron@yandex-team.com2026-06-28T08:10:12Zurn:sha1:790e3c2f5f574085a0f8a5fcd70d1e3b8d777e01
commit_hash:46268aab3c7952cc83f661c4c1d1e3c858f20a2d
Properly init pointer when no avx22025-12-05T14:24:37Zeivanov89eivanov89@yandex-team.com2025-12-05T13:58:01Zurn:sha1:de7ba2daff46407dd15daa802fef35a16eacc399
commit_hash:9c39c2ba0ff9c555e6f5da0bbe3d8be5a04d6654
Cleanup2025-12-03T16:01:14Zeivanov89eivanov89@yandex-team.com2025-12-03T15:40:04Zurn:sha1:8da4cb1c3ad3b4ba992e7dfd6d45a994932a53b4
commit_hash:dd2be4d0024c7e7a11241e359cf22c5cf7b68022
Triway cleanup: real Simple impl and proper inlining2025-12-01T19:40:39Zeivanov89eivanov89@yandex-team.com2025-12-01T19:07:13Zurn:sha1:ea4f0e21b30e50e76f44dc62613e55c3e857a9e6
commit_hash:9c7440543104a49acca845c08d85e49c4f8eb854
Add AVX2 version of TriWayDotProduct #293842025-11-25T15:21:17Zeivanov89eivanov89@yandex-team.com2025-11-25T14:21:41Zurn:sha1:a8c13a953a3ad956c7b5442f2abd6841f6a2c40e
commit_hash:44faaa78b7fe05dab4c716202becad3c8beed79a
Publish library/cpp/dot_product2024-03-26T15:49:55Zazevaykinazevaykin@yandex-team.com2024-03-26T15:35:08Zurn:sha1:ce034cd07e7ebbff42723e51067bac58d1943f47
Publish pod_product to https://github.com/ydb-platform/ydb
It has already been published to github: https://github.com/catboost/catboost/tree/master/library/cpp/dot_product
44150e7508881f4239c960f90320799b1b090072