Files
ceres-solver/internal/ceres
Dmitriy Korchemkin e6b2f532b4 Parallelize PSE preconditioner
Parallelization of remaining block-diagonal matrix-vector product and
vector operations makes parallel execution slightly faster

Before (Intel 8176 CPU, 10 iterations):
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Benchmark                                                          Time
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PSEPreconditioner...<problem-13682-4456117-pre.txt>/1_median   26677 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/1_stddev    26.6 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/2_median   31037 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/2_stddev     191 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/4_median   16915 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/4_stddev    98.0 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/8_median    9175 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/8_stddev    44.1 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/16_median   4974 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/16_stddev   11.5 ms

After:
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Benchmark                                                          Time
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PSEPreconditioner...<problem-13682-4456117-pre.txt>/1_median   26609 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/1_stddev    69.4 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/2_median   29178 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/2_stddev     367 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/4_median   16152 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/4_stddev     106 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/8_median    8773 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/8_stddev    41.5 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/16_median   4800 ms
PSEPreconditioner...<problem-13682-4456117-pre.txt>/16_stddev   14.7 ms

Change-Id: Ib1d1b0c4edf9c556a9e996c49486d2726efcc558
2023-09-28 21:11:26 +00:00
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