<div dir="ltr"><div>Thanks, Matt</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Dec 6, 2021 at 4:47 PM Matthew Knepley <<a href="mailto:knepley@gmail.com">knepley@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">On Mon, Dec 6, 2021 at 6:40 PM Fande Kong <<a href="mailto:fdkong.jd@gmail.com" target="_blank">fdkong.jd@gmail.com</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear PETSc team,<div><br><div>I am interested in a careful evaluation of PETSc GPU performance in our INL cluster. </div><div><br></div><div>Any example in PETSc that can show GPU speedup with solving a nonlinear equation? </div><div><br></div><div>I talked to Junchao; he suggested that I try SNES/tutorial/ex56. I tried that, but I could not find any speedup using the GPU. I could attach some results of "log_view" later if we would like to see that. </div></div></div></blockquote><div><br></div><div>We should note that you will only see speedup in the solver, so that problem has to be pretty large. I believe Mark has good results with it.</div><div>The assembly is still all on the CPU. I am working on this over break, and hope to have a CEED version of it by the new year.</div></div></div></blockquote><div><br></div><div>Are both function and matrix assmelies on CPU? Or just the matrix assembly?</div><div><br></div><div>OK, I will try to check the solver part </div><div><br></div><div>Thanks, again </div><div><br></div><div>Fande </div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><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-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div>Appreciate any instructions/comments about running a simple PETSc GPU example to get a speedup. </div><div><br></div><div>Thanks,</div><div><br></div><div>Fande</div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><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>
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