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It looks like your DM cannot be saved in exodus format as such. The exodus format requires that all cells be part of a single block (defined by ‘Cell Set’ labels), and that the cell sets consists of sequentially numbered cells.
<div class="">Can you see if that is enough? If not, I will go through your example</div>
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<div class="">Blaise</div>
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<div class="">On Nov 30, 2021, at 9:50 AM, David Andrs <<a href="mailto:andrsd@gmail.com" class="">andrsd@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">Hello!
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<div class="">I am trying to store data into an ExodusII file using the ExodusIIViewer, but running into a segfault inside PETSc. Attached is a minimal example showing the problem. It can very much be that I am missing something obvious. However, if I change
the code to VTKViewer I get the desired output file.</div>
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<div class="">Machine: MacBook Pro 2019</div>
<div class="">OS version/type: Darwin notak.local 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64 x86_64</div>
<div class="">PETSc: Petsc Release Version 3.16.1, Nov 01, 2021 </div>
<div class="">MPI: MPICH 3.4.2</div>
<div class="">Compiler: clang-12</div>
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<div class="">Call stack (not sure how relevant that is since it is from opt version):</div>
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<font face="monospace" class="">* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xc)<br class="">
frame #0: 0x0000000102303ba9 libpetsc.3.16.dylib`DMView_PlexExodusII(dm=<unavailable>, viewer=<unavailable>) at plexexodusii.c:457:45 [opt]<br class="">
454 else if (degree == 2) nodes[cs] = nodesHexP2;<br class="">
455 }<br class="">
456 /* Compute the number of cells not in the connectivity table */<br class="">
-> 457 cellsNotInConnectivity -= nodes[cs][3]*csSize;<br class="">
458 <br class="">
459 ierr = ISRestoreIndices(stratumIS, &cells);CHKERRQ(ierr);<br class="">
460 ierr = ISDestroy(&stratumIS);CHKERRQ(ierr);</font><br class="">
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<div class=""><span style="font-family:arial,sans-serif" class="">With regards,</span><br class="">
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<div class=""><font face="arial, sans-serif" class="">David Andrs</font></div>
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<span id="cid:f_kwm7c00u0"><exo2.c></span></div>
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<div>-- <br class="">
Professor, Department of Mathematics & Statistics<br class="">
Hamilton Hall room 409A, McMaster University<br class="">
1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada <br class="">
Tel. +1 (905) 525 9140 ext. 27243</div>
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