<div dir="auto">Valgrind <a href="https://valgrind.org/">https://valgrind.org/</a></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il Dom 17 Gen 2021, 21:28 Roland Richter <<a href="mailto:roland.richter@ntnu.no">roland.richter@ntnu.no</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Dear all,</p>
<p>I am currently encountering issues in my program when calling
MatDiagonalScale(matrix, NULL, vector) in an MPI-context for at
least two threads. The backtrace from gdb (and the error output)
tells me that the problem lies apparently in
PetscSFBcastAndOpBegin(), with the exact error listed as <i>petsc/src/vec/is/sf/interface/sf.c
Wrong type of object: Parameter # 1 <br>
</i></p>
<p>When printing the involved matrix and vector, everything looks as
expected (the matrix is split over the processes equally with
continuous rows, the vector is distributed over both processes).</p>
<p>Is the issue that my vector is distributed over several
processes? Or is there another issue I am not seeing here?</p>
<p>I tried to narrow the problem down by writing a MWE, but was not
able to reproduce it in a smaller scale. Therefore, are there
other approaches I could try, too?</p>
<p>Thanks!</p>
<p>Regards,</p>
<p>Roland Richter<br>
</p>
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</blockquote></div>