<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 23, 2021 at 2:57 AM Pierre Jolivet <<a href="mailto:pierre@joliv.et">pierre@joliv.et</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 style="overflow-wrap: break-word;"><br><div><br><blockquote type="cite"><div>On 22 Apr 2021, at 7:45 PM, Barry Smith <<a href="mailto:bsmith@petsc.dev" target="_blank">bsmith@petsc.dev</a>> wrote:</div><br><div><div style="overflow-wrap: break-word;"><div><br></div> It would be straightforward to add an option to -info to output only from a particular MPI_COMM_WORLD global rank.<div><br></div><div> Maybe an extra :rank at the end of the info options?</div><div><br></div><div> Open 128k files is nuts.</div></div></div></blockquote><div><br></div><div>It is what it is, I’ve made peace with the fact that I can’t expect any meaningful timings for large runs when this option is on.</div></div></div></blockquote><div><br></div><div>I'm not talking about timings, I am talking about seeing where a code dies.</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 style="overflow-wrap: break-word;"><div><div>As a side note, one would expect that this kind of behavior is consistent across the library.</div><div>But in fact, it isn’t. If you do something like -sub_ksp_view_pmat file with, for example, DD preconditioners, you end up with a single file with all local matrices scrambled in.</div><div>It would be nice to have the same logic, i.e., file.%p, and be able to filter ranks that actually print to file like you suggest.</div><div>These kind of options are less critical than -info so I can just insert them in the option database after initialization, if rank == view_this_rank PetscOptionsInsertString(), but doing that using command line arguments would be easier and more elegant, IMO. </div><div><br></div><div>Thanks,</div><div>Pierre</div><br><blockquote type="cite"><div><div style="overflow-wrap: break-word;"><div><div> Barry<br><div><br><blockquote type="cite"><div>On Apr 22, 2021, at 11:14 AM, Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>> wrote:</div><br><div><div dir="ltr">OK, so -info out.%p would do what I asked. Alas, what I really need it to reduce the output with 128K processes.<div>Thanks,</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 22, 2021 at 11:54 AM Pierre Jolivet <<a href="mailto:pierre@joliv.et" target="_blank">pierre@joliv.et</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><br><div><br><blockquote type="cite"><div>On 22 Apr 2021, at 5:33 PM, Jacob Faibussowitsch <<a href="mailto:jacob.fai@gmail.com" target="_blank">jacob.fai@gmail.com</a>> wrote:</div><br><div><div>Not out of the box no. There is -info ::self which makes info only print from calls made on PETSC_COMM_SELF, but I don’t think that’s what you want. Best advice would be to print to a file and grep the file for any lines starting with the rank number you want.</div></div></blockquote><div><br></div><div>There is no need for grep, IMHO, just do -info file and then open file.%p</div><div><br></div><div>Thanks,</div><div>Pierre</div><br><blockquote type="cite"><div><div><div><div><div>
<div dir="auto" style="letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div dir="auto" style="letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div>Best regards,<br><br>Jacob Faibussowitsch<br>(Jacob Fai - booss - oh - vitch)<br></div></div></div>
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<div><br><blockquote type="cite"><div>On Apr 22, 2021, at 10:16, Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>> wrote:</div><br><div><div dir="ltr">Can I make -info only print from one process?<div>Mark</div></div>
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