<div dir="ltr">Hi, Philip,<br> Sorry to hear that. It seems you could run the same code on CPUs but not no GPUs (with either petsc/Kokkos backend or petsc/cuda backend, is it right?<div style="border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Arial,Helvetica,sans-serif;margin:0px;padding:0px;vertical-align:baseline;color:black"><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">--Junchao Zhang</div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 14, 2022 at 12:13 PM Fackler, Philip via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-25761908020450439">
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This is an issue I've brought up before (and discussed in-person with Richard). I wanted to bring it up again because I'm hitting the limits of what I know to do, and I need help figuring this out.</div>
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The problem can be reproduced using Xolotl's "develop" branch built against a petsc build with kokkos and kokkos-kernels enabled. Then, either add the relevant kokkos options to the "petscArgs=" line in the system test parameter file(s), or just replace the
system test parameter files with the ones from the "feature-petsc-kokkos" branch. See
<a href="https://github.com/ORNL-Fusion/xolotl/tree/feature-petsc-kokkos/benchmarks" title="https://github.com/ORNL-Fusion/xolotl/tree/feature-petsc-kokkos/benchmarks" target="_blank">
here</a> the files that begin with "params_system_".</div>
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Note that those files use the "kokkos" options, but the problem is similar using the corresponding cuda/cusparse options. I've already tried building kokkos-kernels with no TPLs and got slightly different results, but the same problem.<br>
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Any help would be appreciated.</div>
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Thanks,<br>
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<span style="font-size:11pt"><strong>Philip Fackler<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<div><span style="font-size:11pt">Research Software Engineer, Application Engineering Group</span></div>
<div><span style="font-size:11pt">Advanced Computing Systems Research Section</span></div>
<div><span style="font-size:11pt">Computer Science and Mathematics Division<br>
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<div><span style="font-size:11pt"><strong>Oak Ridge National Laboratory</strong></span><span style="font-size:11pt"></span><br>
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