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<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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