Thanks for your answer Jeff. I’m, going to double check the ROCM5 build later on and get back with the results, but for now the build commands used for the cuda version are: ./configure --prefix=${install_dir}/ucx_1.14.1 --without-bfd --with-cuda= nvidia/Linux_x86_64/21.2/cuda/11.2/ --without-knem --without-rocm --enable-gtest --enable-examples make -j16 make install I see your comment on github (https://github.com/pmodels/mpich/issues/6675) as well, I’ll change the value of if-yaksa-depth and check the results. Thank you for you insight on that. Best, Lucas. From: Jeff Hammond <[email protected]> Sent: Monday, 18 September 2023 13:26 To: [email protected] Cc: Lucas Zacchi de Medeiros <[email protected]> Subject: Re: [mpich-discuss] libmpi size unusually large when building with CUDA support EXTERNAL MAIL If the CPU-only and ROCm builds are the same size, I wonder if ROCm support was compiled in at all. How did you verify that? Can you provide the full build commands for each so I can reproduce these? You might see if -yaksa-depth=1 (or 0 perhaps) changes the results. There is a performance tradeoff, but if your applications don't use interesting noncontiguous datatypes, it shouldn't matter. Jeff On Fri, Sep 15, 2023 at 5:53 PM Lucas Zacchi de Medeiros via discuss <[email protected]<mailto:[email protected]>> wrote: I work on a project that supports different architectures, so we've built 3 separate versions of MPICH 4.1.1 (cuda11.2, rocm5.4.3 and cpu-only with ucx1.14.1) The cpu-only and the rocm5 libraries are around 50MB each. The CUDA version on the other hand, is close to 1.8GB! There doesn’t seem to be anything out of the ordinary with the builds and all versions are working as expected. This is the output of du -sh performed on the install directories: First the rocm5 build: $ du -sh LINUX_gcc9.3_glibc2.28_rocm5.4.3_ucx1.14.1/lib/* (...) 53M LINUX_gcc9.3_glibc2.28_rocm5.4.3_ucx1.14.1/lib/libmpi.a 40M LINUX_gcc9.3_glibc2.28_rocm5.4.3_ucx1.14.1/lib/libmpi.so.12.3.0 And then the CUDA build: $ du -sh LINUX_gcc9.3_glibc2.17_cuda11.2_ucx1.14.1/lib/* (...) 1.8G LINUX_gcc9.3_glibc2.17_cuda11.2_ucx1.14.1/lib/libmpi.a 1.7G LINUX_gcc9.3_glibc2.17_cuda11.2_ucx1.14.1/lib/libmpi.so.12.3.0 This issue really complicates packaging and distribution since we provide both the archive and the shared libraries, I am looking at more than 3GB for MPICH only. After some investigation, it doesn’t seem the problem is coming from our end. Is it possible that something in mpich’s build process is causing this excessive file size? Thanks for the help. Kind regards, Lucas _______________________________________________ discuss mailing list [email protected]<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss<https://urldefense.com/v3/__https:/lists.mpich.org/mailman/listinfo/discuss__;!!EHscmS1ygiU1lA!EaOkIWaGMsFGOtnvVJqLcS20A0toTn_gIEHsyespF0xr8WerBJidCx6LZnB9gSbIy-LWgxCcNMimtEgH9E1y$> -- Jeff Hammond [email protected]<mailto:[email protected]> http://jeffhammond.github.io/<https://urldefense.com/v3/__http:/jeffhammond.github.io/__;!!EHscmS1ygiU1lA!EaOkIWaGMsFGOtnvVJqLcS20A0toTn_gIEHsyespF0xr8WerBJidCx6LZnB9gSbIy-LWgxCcNMimtJQmD4Bd$>