Make TVM build parallel in conda environment on Windows#12475
Make TVM build parallel in conda environment on Windows#12475kparzysz-quic wants to merge 1 commit intoapache:mainfrom kparzysz-quic:parallel-build
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| :: under the License. | ||
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| cmake --build build --config Release --target install | ||
| cmake --build build --config Release --target install -- /p:CL_MPcount=8 |
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is it possible to use the windows equivalent of nproc here instead of always assuming it's 8?
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I think =0 will use all available processors. I didn't see a lot of improvement from =8 (plus googling suggests limiting this number), so I'll try 2 and 4 next.
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There is really no difference in the Windows build time regardless of the value of this option. :( Closing this PR. |
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Just wondering is this for CI Windows builds? If so we could probably chase down #11550 to get some speedups |
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Yes. I thought it was an easy way to get some speedup, but it didn't work. Builds with 2, 4, and 8 took about the same amount of time (roughly 100 minutes). Also, many sources on the Internet suggested using a lower number, since multiple compilations could consume enough memory to cause extensive swapping. The Windows build is not the longest in the CI, so I'm not sure if it's worth to spend a lot of effort trying to accelerate it. It attracted my attention because I had to fix build failures on Windows (related to the switch to C++17), and each round took quite a while to get to the point of failure. On the other hand, if you have time, don't let anything dissuade you from working on this. 🙂 |
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