Shift transition to multithreading towards larger matrix sizes #1971
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See #1886 and JuliaRobotics issue 500. trsm benchmarks on Haswell and Zen showed that with these values performance is roughly doubled for matrix sizes between 8x8 and 14x14, and still 10 to 20 percent better near the new cutoff at 32x32.
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Interestingly the impact on very thin matrices with only one of M and N below the threshold (e.g. 500x2 or 2x500) appears to be fairly small. |
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Perhaps not surprisingly, this actually has huge drawbacks for matrix dimensions like 500x20... will see if basing the decision on args.m*args.n like it is done in other interface routines works, or perhaps a combination of both approaches. |
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Meh. appveyor is starting to time out on the dynamic_arch build again. |
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See #1886 and JuliaRobotics issue 500. trsm benchmarks on Haswell and Zen showed that with these values performance is roughly doubled for matrix sizes between 8x8 and 14x14, and still 10 to 20 percent better near the new cutoff at 32x32.