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1 Commits (a3d2b360f91e04b7dfb4f01cec55323b63b9f99d)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Gleb Mazovetskiy
|
a3d2b360f9 |
Palette KD-tree: Fix compilation speed
Tricks the compiler into skipping expensive `uninit var analysis` (`-Wmaybe-uninitialized`) by using a struct with state rather than separate variables for `best` / `bestDiff`. This has no performance impact. Also optimizes lookup a bit further and moves some code that does not need to be inlined to the cpp file. ``` Benchmark Time CPU Time Old Time New CPU Old CPU New ----------------------------------------------------------------------------------------------------------------------------------- BM_GenerateBlendedLookupTable_pvalue 0.0002 0.0002 U Test, Repetitions: 10 vs 10 BM_GenerateBlendedLookupTable_mean +0.0237 +0.0237 2092090 2141601 2091732 2141291 BM_GenerateBlendedLookupTable_median +0.0237 +0.0237 2092104 2141662 2091669 2141319 BM_GenerateBlendedLookupTable_stddev -0.6414 -0.5834 664 238 538 224 BM_GenerateBlendedLookupTable_cv -0.6497 -0.5930 0 0 0 0 BM_BuildTree_pvalue 0.0002 0.0002 U Test, Repetitions: 10 vs 10 BM_BuildTree_mean +0.0410 +0.0410 4495 4679 4494 4678 BM_BuildTree_median +0.0403 +0.0402 4494 4675 4493 4674 BM_BuildTree_stddev +0.9515 +0.9359 7 14 7 14 BM_BuildTree_cv +0.8746 +0.8596 0 0 0 0 BM_FindNearestNeighbor_pvalue 0.0002 0.0002 U Test, Repetitions: 10 vs 10 BM_FindNearestNeighbor_mean -0.0399 -0.0398 1964257108 1885966812 1963954917 1885694336 BM_FindNearestNeighbor_median -0.0397 -0.0396 1963969748 1886074435 1963650984 1885803182 BM_FindNearestNeighbor_stddev -0.3380 -0.3443 1217360 805946 1225442 803469 BM_FindNearestNeighbor_cv -0.3105 -0.3171 0 0 0 0 OVERALL_GEOMEAN +0.0077 +0.0077 0 0 0 0 ``` |
7 months ago |