<div dir="ltr"><div dir="ltr">On Mon, Nov 22, 2021 at 6:47 AM Karthikeyan Chockalingam - STFC UKRI <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk">karthikeyan.chockalingam@stfc.ac.uk</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="gmail-m_-7613852394982751923p1"><span style="font-size:10pt">Thank you for your response. I tried to run the same example<u></u><u></u></span></p>
<p class="gmail-m_-7613852394982751923p1"><span style="font-size:10pt"><u></u> <u></u></span></p>
<p class="gmail-m_-7613852394982751923p1"><span style="font-size:10pt">petsc/src/ksp/ksp/tutorials$ <b>./ex4 -ksp_type cg -mat_type hypre -ksp_view -pc_type hypre<u></u><u></u></b></span></p>
<p class="gmail-m_-7613852394982751923p1"><b><span style="font-size:10pt"><u></u> <u></u></span></b></p>
<p class="gmail-m_-7613852394982751923p1"><span style="font-size:10pt">but it crashed with the below error<span class="gmail-m_-7613852394982751923s1"><u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:12pt"><u></u> <u></u></span></span></p>
<p class="MsoNormal"><b><span style="font-size:10pt;font-family:Menlo;color:rgb(180,36,25)">[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------</span></b><span style="font-size:10pt;font-family:Menlo;color:rgb(180,36,25)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Menlo;color:black">[0]PETSC ERROR: Object is in wrong state<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Menlo;color:black">[0]PETSC ERROR: Must call MatXXXSetPreallocation(), MatSetUp() or the matrix has not yet been factored on argument 1 "mat" before MatGetOwnershipRange()</span></p></div></div></blockquote><div><br></div><div>Hi Karthik,</div><div><br></div><div>Please do not clip the error message. We need the entire output. This seems strange that you would get a logic error,</div><div>since that should be the same on any architecture. So could you also send the make.log?</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-GB" style="overflow-wrap: break-word;"><div class="gmail-m_-7613852394982751923WordSection1">
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">Below are the options used to configure hypre with cuda support. Do you spot any mistakes?<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:12pt"><u></u> <u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--with-blaslapack-dir=/lustre/scafellpike/local/apps/intel/intel_cs/2018.0.128/mkl
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--with-cuda=1 <u></u>
<u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--with-cuda-arch=70
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--download-hypre=yes
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--download-hypre-configure-arguments=HYPRE_CUDA_SM=70
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--download-hypre-commit=origin/hypre_petsc
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--with-shared-libraries=1
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--known-mpi-shared-libraries=1
<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--with-cc=mpicc <u></u>
<u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">--with-cxx=mpicxx <u></u>
<u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">-with-fc=mpif90<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt"><u></u> <u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">Best,<u></u><u></u></span></span></p>
<p class="gmail-m_-7613852394982751923p1"><span class="gmail-m_-7613852394982751923s1"><span style="font-size:10pt">Karthik.</span></span><span style="font-size:10pt"><u></u><u></u></span></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From: </span></b><span style="font-size:12pt;color:black">Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>><br>
<b>Date: </b>Friday, 19 November 2021 at 16:31<br>
<b>To: </b>"Chockalingam, Karthikeyan (STFC,DL,HC)" <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>><br>
<b>Cc: </b>"<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>" <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>><br>
<b>Subject: </b>Re: [petsc-users] hypre on gpus<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">You should run with -options_left to check that your options are being used. It may be -mat_type hypre.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I have tested this:<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">petsc/src/ksp/ksp/tutorials$ <b>srun -n2 ./ex4 -ksp_type cg -mat_type hypre -ksp_view -pc_type hypre</b><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">You can add -log_view and that will print performance data for each method like KSPSolve.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">If you are configured with a GPU there will be some extra columns that give the percent of flops on the GPU.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">In the past hypre has not registered flops with us, but I do get flops from hypre now, and -ksp_view showed that it did indeed use hypre.<u></u><u></u></p>
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<p class="MsoNormal">I saw that the flops were 100% GPU in hypre.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Fri, Nov 19, 2021 at 10:47 AM Karthikeyan Chockalingam - STFC UKRI <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">I tried to solve a 3D Poisson (ksp/tutorial/ex45) using -pc_type hypre on gpus<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">./ex45 -da_grid_x 128 -da_grid_y 128 -da_grid_z 128 -dm_mat_type hypre -dm_vec_type cuda -ksp_type cg -pc_type hypre -pc_hypre_type boomeramg -ksp_monitor -log_view<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">I profiled the run using NSYS - attached you find all the relevant files.
<u></u><u></u></p>
<p class="MsoNormal">Looking at the profile I doubt if hypre is running on gpus. The cuda kernels are barely active.<u></u><u></u></p>
<p class="MsoNormal">I don’t see any cuda kernel relevant to solve.<u></u><u></u></p>
<p class="MsoNormal">Is my assessment correct? How can I verify if hypre indeed is running on gpus?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Best,<u></u><u></u></p>
<p class="MsoNormal">Karthik.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>><br>
<b>Date: </b>Friday, 8 October 2021 at 18:47<br>
<b>To: </b>"Chockalingam, Karthikeyan (STFC,DL,HC)" <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>><br>
<b>Cc: </b>"<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>" <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>><br>
<b>Subject: </b>Re: [petsc-users] hypre on gpus</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">I think you would want to use 'cuda' vec_type, but I .<u></u><u></u></p>
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<p class="MsoNormal">You might ask Hypre how one verifies that the GPU is used.<u></u><u></u></p>
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<p class="MsoNormal">Mark<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">On Fri, Oct 8, 2021 at 1:35 PM Karthikeyan Chockalingam - STFC UKRI <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>>
wrote:<u></u><u></u></p>
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<p class="MsoNormal">Yes, I used it for both cpu and gpu. Is that not okay?<u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Arial,sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Arial,sans-serif">For gpu:
<span style="color:black">-dm_mat_type hypre -dm_vec_type mpicuda </span></span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Arial,sans-serif;color:black"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Arial,sans-serif;color:black">For cpu: -dm_mat_type hypre -dm_vec_type mpi</span><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">Mark Adams <</span><a href="mailto:mfadams@lbl.gov" target="_blank"><span style="font-size:12pt">mfadams@lbl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Date: </b>Friday, 8 October 2021 at 18:28<br>
<b>To: </b>"Chockalingam, Karthikeyan (STFC,DL,HC)" <</span><a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank"><span style="font-size:12pt">karthikeyan.chockalingam@stfc.ac.uk</span></a><span style="font-size:12pt;color:black">><br>
<b>Cc: </b>"</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">" <</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Subject: </b>Re: [petsc-users] hypre on gpus</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Did you use -dm_mat_type hypre on the GPU case ?<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">On Fri, Oct 8, 2021 at 12:19 PM Karthikeyan Chockalingam - STFC UKRI <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>>
wrote:<u></u><u></u></p>
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<p class="MsoNormal">I tried a different exercise ran the same problem on two cpu cores and on two gpu:<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">On gpu
<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">PCApply 6 1.0 6.0335e+00 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 6.0e+00 15 0 0 0 1 15 0 0 0 1 0 0 0 0.00e+00 5 9.65e+01 0<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">and on cpu<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">PCApply 6 1.0 5.6348e+00 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 16 0 0 0 0 16 0 0 0 0 0<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">timings again are close but gpu version did a reduction 6.0e+00 but the cpu version did not 0.0e+00.
<u></u><u></u></p>
<p class="MsoNormal">I am not sure if that is any indication if hypre ran on gpus?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">Karthik.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">Mark Adams <</span><a href="mailto:mfadams@lbl.gov" target="_blank"><span style="font-size:12pt">mfadams@lbl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Date: </b>Friday, 8 October 2021 at 16:36<br>
<b>To: </b>"Chockalingam, Karthikeyan (STFC,DL,HC)" <</span><a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank"><span style="font-size:12pt">karthikeyan.chockalingam@stfc.ac.uk</span></a><span style="font-size:12pt;color:black">><br>
<b>Cc: </b>"</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">" <</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Subject: </b>Re: [petsc-users] hypre on gpus</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">On Fri, Oct 8, 2021 at 10:29 AM Karthikeyan Chockalingam - STFC UKRI <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>>
wrote:<u></u><u></u></p>
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<p class="MsoNormal">The PCApply timing on<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">gpu<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p>PCApply 6 1.0 1.0235e+01 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 39 0 0 0 0 39 0 0 0 0 0 0 0 0.00e+00 0 0.00e+00 0<u></u><u></u></p>
<p> <u></u><u></u></p>
<p>and cpu <u></u><u></u></p>
<p> <u></u><u></u></p>
<p>PCApply 6 1.0 1.0242e+01 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 41 0 0 0 0 41 0 0 0 0 0<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">You don't have GPUs. probably.<u></u><u></u></p>
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<p class="MsoNormal">Use <span style="font-family:Menlo;color:black">-dm_mat_type hypre</span>. <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">are close. It is hard for me tell if hypre on gpu is on or not.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Best,<u></u><u></u></p>
<p class="MsoNormal">Karthik.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">"Chockalingam, Karthikeyan (STFC,DL,HC)" <</span><a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank"><span style="font-size:12pt">karthikeyan.chockalingam@stfc.ac.uk</span></a><span style="font-size:12pt;color:black">><br>
<b>Date: </b>Friday, 8 October 2021 at 14:55<br>
<b>To: </b>Mark Adams <</span><a href="mailto:mfadams@lbl.gov" target="_blank"><span style="font-size:12pt">mfadams@lbl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Cc: </b>"</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">" <</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Subject: </b>Re: [petsc-users] hypre on gpus</span><u></u><u></u></p>
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<p class="MsoNormal">Thanks Mark, I will try your recommendations.<u></u><u></u></p>
<p class="MsoNormal">Should I also change
<span style="font-family:Menlo;color:black">-dm_vec_type to hypre </span>currently I have it as mpicuda?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Karthik.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">Mark Adams <</span><a href="mailto:mfadams@lbl.gov" target="_blank"><span style="font-size:12pt">mfadams@lbl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Date: </b>Friday, 8 October 2021 at 14:33<br>
<b>To: </b>"Chockalingam, Karthikeyan (STFC,DL,HC)" <</span><a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank"><span style="font-size:12pt">karthikeyan.chockalingam@stfc.ac.uk</span></a><span style="font-size:12pt;color:black">><br>
<b>Cc: </b>"</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">" <</span><a href="mailto:petsc-users@mcs.anl.gov" target="_blank"><span style="font-size:12pt">petsc-users@mcs.anl.gov</span></a><span style="font-size:12pt;color:black">><br>
<b>Subject: </b>Re: [petsc-users] hypre on gpus</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Hypre does not record its flops with PETSc's timers.<u></u><u></u></p>
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<p class="MsoNormal">Configure with and without CUDA and see if the timings change in PCApply.<u></u><u></u></p>
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<p class="MsoNormal">Hypre does not dynamically switch between CUDA and CPU solves at this time, but you want to use <span style="font-family:Menlo;color:black">-dm_mat_type hypre.</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-family:Menlo;color:black">Mark</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">On Fri, Oct 8, 2021 at 6:59 AM Karthikeyan Chockalingam - STFC UKRI <<a href="mailto:karthikeyan.chockalingam@stfc.ac.uk" target="_blank">karthikeyan.chockalingam@stfc.ac.uk</a>>
wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">I am trying to run ex45 (in KSP tutorial) using hypre on gpus. I have attached the python configuration file and -log_view output from running the below command options<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Menlo;color:black">mpirun -n 2 ./ex45 -log_view -da_grid_x 169 -da_grid_y 169 -da_grid_z 169 -dm_mat_type mpiaijcusparse -dm_vec_type mpicuda -ksp_type
gmres -pc_type hypre -pc_hypre_type boomeramg -ksp_gmres_restart 31 -pc_hypre_boomeramg_strong_threshold 0.7 -ksp_monitor</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Menlo;color:black"> </span><u></u><u></u></p>
<p class="MsoNormal">The problem was solved and converged but from the output file I suspect hypre is not running on gpus as PCApply and DMCreate does
<b>not</b> record any gpu Mflop/s. However, some events such KSPSolve, MatMult etc are running on gpus.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Can you please let me know if I need to add any extra flag to the attached arch-ci-linux-cuda11-double-xx.py script file to get hypre working on gpus?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">Karthik.<u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:Menlo;color:rgb(192,0,0)"> </span><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>