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<p class="MsoNormal">Hi Mark,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I couldn’t follow all the issues in the other thread. Anyway, you are in luck.
<br>
<br>
<o:p></o:p></p>
<p class="MsoNormal">I have pushed for GNU compiler support with Fujitsu MPI since November after hitting multiple issues. Finally, got an update from Fugaku helpdesk earlier this week.<o:p></o:p></p>
<p class="MsoNormal">As you are aware, you will probably get better performance with GNU than Fujitsu on A64FX. My latest experiments confirmed that *<b>again</b>* for climate workloads.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">See "Users Guide - Language and development environment Ver. 1.02" - Chapter 4 for details.<o:p></o:p></p>
<p class="MsoNormal"><a href="https://www.fugaku.r-ccs.riken.jp/doc_root/en/user_guides/lang_1.02/GCC_MPI/index.html">https://www.fugaku.r-ccs.riken.jp/doc_root/en/user_guides/lang_1.02/GCC_MPI/index.html</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Additionally, please note that you will need to `spack load <a href="mailto:gcc@10.2.0%60">
gcc@10.2.0`</a> to load the latest GNU compiler.<o:p></o:p></p>
<p class="MsoNormal">To summarize, you need to do the following on a compute node to get the requisite environment.<o:p></o:p></p>
<p class="MsoNormal">```<o:p></o:p></p>
<p class="MsoNormal">. /vol0004/apps/oss/spack/share/spack/setup-env.sh<o:p></o:p></p>
<p class="MsoNormal">spack load fujitsu-mpi%gcc<o:p></o:p></p>
<p class="MsoNormal">spack load <a href="mailto:gcc@10.2.0">gcc@10.2.0</a><o:p></o:p></p>
<p class="MsoNormal">```<o:p></o:p></p>
<p class="MsoNormal"><br>
Hope this helps (cc’ing petsc-dev),<br>
Sarat.<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Mark Adams <mfadams@lbl.gov> <br>
<b>Sent:</b> Friday, April 16, 2021 10:27 AM<br>
<b>To:</b> Sreepathi, Sarat <sarat@ornl.gov><br>
<b>Subject:</b> Re: [EXTERNAL] Re: building on Fugaku<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Sarat, <o:p></o:p></p>
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<p class="MsoNormal">I am making progress. Kokkos is working w/o OMP, but Kokkos Kernels + OMP is barfing and Kokkos people suggested GNU.<o:p></o:p></p>
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<p class="MsoNormal">But one of my third party libraries needs MPI. Do you know of some sort of MPI library on Fugaku? <o:p></o:p></p>
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<p class="MsoNormal">It just has to work with one process.<o:p></o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Mark<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Apr 14, 2021 at 3:21 PM Sreepathi, Sarat <<a href="mailto:sarat@ornl.gov">sarat@ornl.gov</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Mark,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">From earlier notes, I used the Kokkos “develop” branch.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">cmake -DCMAKE_BUILD_TYPE=Release \<br>
-DCMAKE_INSTALL_PREFIX=${KOKKOS_SRC_DIR}/install \<br>
-DBUILD_TESTING=OFF \<br>
-DKokkos_ENABLE_LIBDL=OFF \<br>
-DKokkos_ENABLE_OPENMP=ON \<br>
-DKokkos_ENABLE_SERIAL=ON \<br>
-DKokkos_ENABLE_AGGRESSIVE_VECTORIZATION=ON \<br>
..<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">-Sarat.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>>
<br>
<b>Sent:</b> Wednesday, April 14, 2021 3:09 PM<br>
<b>To:</b> Sreepathi, Sarat <<a href="mailto:sarat@ornl.gov" target="_blank">sarat@ornl.gov</a>><br>
<b>Cc:</b> Richard Tran Mills <<a href="mailto:rtmills@anl.gov" target="_blank">rtmills@anl.gov</a>><br>
<b>Subject:</b> [EXTERNAL] Re: building on Fugaku<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Sarat,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I have made some progress but am getting a C++ error:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">CMake Warning at cmake/kokkos_test_cxx_std.cmake:47 (MESSAGE):<br>
C++14 is not supported as a compiler feature. We will choose custom flags<br>
for now, but this behavior has been deprecated. Please open an issue at<br>
<a href="https://github.com/kokkos/kokkos/issues" target="_blank">https://github.com/kokkos/kokkos/issues</a> reporting that Fujitsu failed for<br>
14, preferrably including your CMake command.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I am using:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">04:08 adams/landau-gpu-opt= ~/petsc$ mpiFCC --version<br>
FCC (FCC) 4.5.0 20210304<br>
simulating gcc version 6.1<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Do you have any ideas?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Mark <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Wed, Apr 14, 2021 at 7:55 AM Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Sarat,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">My colleague, Rich Mills, and I are coming back to Fugaku after a while, and I wanted to ask you how you build, with Kokkos, on Fugaku. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I have tried Arm and Fugitzu compilers and was able to get Fugitzu to work a few months ago, but I wanted to see what you use. Especially for Kokkos.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Can you share with us your build details?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Mark<o:p></o:p></p>
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