[petsc-users] Bad Termination error in MatPartitioningApply with ParMETIS

[Eda Oktay]

Hi all,

I am trying to partition a matrix in multiple processes. However, at some
point I get the following eror:

[ 0] ***ASSERTION failed on line 176 of file
/home/edaoktay/petsc-3.11.1/arch-linux2-c-debug/externalpackages/git.parmetis/libparmetis/comm.c:
j == nnbrs
[ 2] [ 3] ***ASSERTION failed on line 176 of file
/home/edaoktay/petsc-3.11.1/arch-linux2-c-debug/externalpackages/git.parmetis/libparmetis/comm.c:
j == nnbrs
enson_unweighted_yeni_vertexweight_imbalance_without_spectral:
/home/edaoktay/petsc-3.11.1/arch-linux2-c-debug/externalpackages/git.parmetis/libparmetis/comm.c:176:
libparmetis__CommSetup: Assertion `j == nnbrs' failed.
enson_unweighted_yeni_vertexweight_imbalance_without_spectral:
/home/edaoktay/petsc-3.11.1/arch-linux2-c-debug/externalpackages/git.parmetis/libparmetis/comm.c:176:
libparmetis__CommSetup: Assertion `j == nnbrs' failed.
***ASSERTION failed on line 176 of file
/home/edaoktay/petsc-3.11.1/arch-linux2-c-debug/externalpackages/git.parmetis/libparmetis/comm.c:
j == nnbrs
enson_unweighted_yeni_vertexweight_imbalance_without_spectral:
/home/edaoktay/petsc-3.11.1/arch-linux2-c-debug/externalpackages/git.parmetis/libparmetis/comm.c:176:
libparmetis__CommSetup: Assertion `j == nnbrs' failed.

===================================================================================
=   BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
=   PID 13751 RUNNING AT d1e.wls.metu.edu.tr
=   EXIT CODE: 134
=   CLEANING UP REMAINING PROCESSES
=   YOU CAN IGNORE THE BELOW CLEANUP MESSAGES
===================================================================================
YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Aborted (signal 6)
This typically refers to a problem with your application.
Please see the FAQ page for debugging suggestions

I get the error for example in 9*9 matrix for 4 processes. Why a I getting
this message, it is working with 2 processes for all matrices but when I
increase process number, it starts to give this message at some point.

Thanks!

Eda
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