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Posted to commits@tvm.apache.org by GitBox <gi...@apache.org> on 2022/09/19 10:20:52 UTC
[GitHub] [tvm] KOLANICH opened a new pull request, #12834: Improved recompilation times by utilizing CCache.
KOLANICH opened a new pull request, #12834:
URL: https://github.com/apache/tvm/pull/12834
Utilizing CCache is especially useful when one realizes he misses a feature and so recompiles the tool with that feature enabled. Or when one realizes he has accidentially enabled a feature unavalable on his platform, so compilation fails and one has to recompile. In that case without CCache CMake has to cause recompile from scratch since it alters the preprocessor. CCache is capable to detect the recompilation from scratch is not needed and to reuse the suitable artifacts from previous builds.
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[GitHub] [tvm] tkonolige commented on pull request #12834: Improved recompilation times by utilizing CCache.
Posted by GitBox <gi...@apache.org>.
tkonolige commented on PR #12834:
URL: https://github.com/apache/tvm/pull/12834#issuecomment-1251309907
Hi @KOLANICH, thanks for submitting a PR!
Historically, we did have ccache enabled by default if it was installed. I think there were some issues with using ccache with hexagon, so it was disabled in #11189. If you want to use cmake with your builds you can run `cmake -DCMAKE_CXX_COMPILER_LAUNCHER=ccache ...` when you configure cmake. If you'd like to try and get it enabled by default for everyone using TVM, you can try adding these lines https://github.com/apache/tvm/pull/11189/files#diff-1e7de1ae2d059d21e1dd75d5812d5a34b0222cef273b7c3a2af62eb747f9d20aL769-L796 back in and seeing if hexagon will still build.
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[GitHub] [tvm] KOLANICH commented on pull request #12834: Improved recompilation times by utilizing CCache.
Posted by GitBox <gi...@apache.org>.
KOLANICH commented on PR #12834:
URL: https://github.com/apache/tvm/pull/12834#issuecomment-1251600206
>CMAKE_CXX_COMPILER_LAUNCHER
My bad, I have used `CMAKE_CXX_COMPILER` + `CMAKE_CXX_FLAGS`. Thanks for reminding me that var exists.
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[GitHub] [tvm] tkonolige commented on pull request #12834: Improved recompilation times by utilizing CCache.
Posted by GitBox <gi...@apache.org>.
tkonolige commented on PR #12834:
URL: https://github.com/apache/tvm/pull/12834#issuecomment-1251385109
Actually I've created a PR to re-enable ccache here: #12839
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[GitHub] [tvm] KOLANICH commented on pull request #12834: Improved recompilation times by utilizing CCache.
Posted by GitBox <gi...@apache.org>.
KOLANICH commented on PR #12834:
URL: https://github.com/apache/tvm/pull/12834#issuecomment-1251598325
>If you want to use cmake with your builds you can run cmake -DCMAKE_CXX_COMPILER_LAUNCHER=ccache ... when you configure cmake.
I have tried this first (but not when configuring, I have edited using `cmake-gui`), but I got some errors of interaction between CMake and ninja (that have forced me into cleaning CMake cacheand starting from scratch several times), so I resorted to this way.
>Actually I've created a PR to re-enable ccache here: #12839
Thanks, I have left my comment there.
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[GitHub] [tvm] KOLANICH closed pull request #12834: Improved recompilation times by utilizing CCache.
Posted by GitBox <gi...@apache.org>.
KOLANICH closed pull request #12834: Improved recompilation times by utilizing CCache.
URL: https://github.com/apache/tvm/pull/12834
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