[petsc-users] MatChop

Emmanuel Ayala juaneah at gmail.com
Fri May 21 10:49:14 CDT 2021

Hi everybody,

I just updated petsc from version 13 to 15. Before the update everything
works well, then my code give me an error:

[9]PETSC ERROR: --------------------- Error Message
[9]PETSC ERROR: Invalid argument
[9]PETSC ERROR: Setting off process row 53484 even though
[9]PETSC ERROR: See https://www.mcs.anl.gov/petsc/documentation/faq.html
for trouble shooting.
[9]PETSC ERROR: Petsc Release Version 3.15.0, Mar 30, 2021
[9]PETSC ERROR: ./comp on a arch-linux-c-opt-O2-superlud_mumps_hyp named
eayala by ayala Fri May 21 10:40:36 2021
[9]PETSC ERROR: Configure options --with-debugging=0 COPTFLAGS="-O2
-march=native -mtune=native" CXXOPTFLAGS="-O2 -march=native -mtune=native"
FOPTFLAGS="-O2 -march=native -mtune=native" --download-mpich
--download-hypre --download-mumps --download-scalapack --download-parmetis
--download-metis --download-superlu_dist --download-cmake
--download-fblaslapack=1 --with-cxx-dialect=C++11

The error appears after a matrix assembly, the matrix was created with
DMCreateMatrix and updated with MatSetValuesLocal.

A Little work around I found the solution, avoid using MatChop on this
matrix, but I still need to use MatChop. There is any reason to have this

Thanks in advance.
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