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<div><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">Hi Matt,</span></div>
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Thanks! I think the third point is what I need to get this working correctly. I'll report back when I have this working (or not working).</div>
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Best,</div>
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David<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Matthew Knepley <knepley@gmail.com><br>
<b>Sent:</b> Monday, November 20, 2023 10:00 AM<br>
<b>To:</b> Wells, David <drwells@email.unc.edu><br>
<b>Cc:</b> petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov><br>
<b>Subject:</b> Re: [petsc-users] Logging object creation and destruction counts</font>
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<div dir="ltr">On Mon, Nov 20, 2023 at 8:00 AM Wells, David <<a href="mailto:drwells@email.unc.edu">drwells@email.unc.edu</a>> wrote:<br>
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Hi everyone,</div>
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I just upgraded to PETSc 3.20 and read up on the new logging infrastructure - its a very nice improvement over the old version.</div>
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I have some code which checks that every construction has a corresponding destruction via</div>
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<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">PetscStageLog stageLog;</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">ierr = PetscLogGetStageLog(&stageLog);</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">for (int i = 0; i < stageLog->stageInfo->classLog->numClasses; ++i)</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> {</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> if (stageLog->stageInfo->classLog->classInfo[i].destructions !=</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> stageLog->stageInfo->classLog->classInfo[i].creations)</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> {</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> crash();</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> }</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> }</span></div>
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<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">This no longer works and I can't figure out how to port it. In particular, it looks like I need to get a PetscLogEvent
number for creation and another for destruction to retrieve the relevant PetscEventPerfInfo objects per-class - is there some straightforward way to do that for every registered PETSc class?</span></div>
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<div>1. The above code seems to require that creation and destruction occur within the same stage, which might not be true.</div>
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<div>2. <a href="https://petsc.org/main/manualpages/Profiling/PetscLogStateGetNumClasses/">https://petsc.org/main/manualpages/Profiling/PetscLogStateGetNumClasses/</a> gets the numbet of classes. You can recreate this loop with the code from PetscLogHandlerObjectCreate_Default()
I think,</div>
<div>which is in logdefault.c. However, as I said, this will not properly match up across stages.</div>
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<div>3. At logdefault.c:1657 we output all the creations and destructions, so you could copy these loops, but sum across stages.</div>
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<div>4. You could register a callback that just increments and decrements for each classid, and then calls PetscLogHandlerObjectCreate/Destroy_Default(), which might be cleaner.</div>
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<div> Thanks,</div>
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<div> Matt</div>
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<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">Best,</span></div>
<div><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">David Wells</span></div>
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<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>
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<div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br>
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