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[MOD-16688] x86 distance kernels: multi-accumulator unrolling + SIMD for smaller dimensions#984

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perf-x86-multi-accumulators-small-dims
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[MOD-16688] x86 distance kernels: multi-accumulator unrolling + SIMD for smaller dimensions#984
GuyAv46 wants to merge 3 commits into
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perf-x86-multi-accumulators-small-dims

Use 2 accumulators where 4 showed no benefit (FP64 + all AVX-512)

8550b86
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Codecov / codecov/project succeeded Jul 5, 2026 in 0s

97.12% (-0.01%) compared to 45daaf3

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97.12% (-0.01%) compared to 45daaf3

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.12%. Comparing base (45daaf3) to head (8550b86).

Additional details and impacted files
@@            Coverage Diff             @@
##             main     #984      +/-   ##
==========================================
- Coverage   97.12%   97.12%   -0.01%     
==========================================
  Files         141      141              
  Lines        8164     8230      +66     
==========================================
+ Hits         7929     7993      +64     
- Misses        235      237       +2     

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