Hello,

I'm having trouble with the MatView function drawing the matrix structure(s) when I execute my code on multiple processors.

When I run on a single processor, the code runs fine, and the graphics window displays cleanly.

When I run with multiple processors, I get error messages (see below).

The matrices are constructed with DMCreateMatrix(da, &A_matrix).

I then set the values with MatSetValuesStencil(A_matrix,1,&row,2,col_A,value_A,INSERT_VALUES).

Finally, I call MatAssemblyBegin(A_matrix,MAT_FINAL_ASSEMBLY) and MatAssemblyEnd(A_matrix,MAT_FINAL_ASSEMBLY).

I also test that the matrices are assembled with MatAssembled(A_matrix, &is_assembled_bool), and it appears they are successfully assembled.

Any help/advice is greatly appreciated.

Thanks in advance!

-Paul Urbanczyk

[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Invalid argument
[0]PETSC ERROR: Wrong type of object: Parameter # 1
[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[0]PETSC ERROR: Petsc Release Version 3.7.1, unknown
[0]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named prometheus by gomer Fri May 27 16:29:01 2016 [0]PETSC ERROR: Configure options --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpif90 [0]PETSC ERROR: #1 AOApplicationToPetsc() line 267 in /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c [0]PETSC ERROR: #2 MatView_MPI_DA() line 557 in /home/gomer/local/petsc/src/dm/impls/da/fdda.c [0]PETSC ERROR: #3 MatView() line 901 in /home/gomer/local/petsc/src/mat/interface/matrix.c [1]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[1]PETSC ERROR: Invalid argument
[1]PETSC ERROR: Wrong type of object: Parameter # 1
[1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[1]PETSC ERROR: Petsc Release Version 3.7.1, unknown
[1]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named prometheus by gomer Fri May 27 16:29:01 2016 [1]PETSC ERROR: Configure options --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpif90 [1]PETSC ERROR: #1 AOApplicationToPetsc() line 267 in /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c [1]PETSC ERROR: #2 MatView_MPI_DA() line 557 in /home/gomer/local/petsc/src/dm/impls/da/fdda.c [1]PETSC ERROR: #3 MatView() line 901 in /home/gomer/local/petsc/src/mat/interface/matrix.c [0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Invalid argument
[1]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[1]PETSC ERROR: Invalid argument
[1]PETSC ERROR: Wrong type of object: Parameter # 1
[1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[1]PETSC ERROR: Petsc Release Version 3.7.1, unknown
[1]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named prometheus by gomer Fri May 27 16:29:01 2016 [1]PETSC ERROR: Configure options --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpif90 [1]PETSC ERROR: #4 AOApplicationToPetsc() line 267 in /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c [1]PETSC ERROR: #5 MatView_MPI_DA() line 557 in /home/gomer/local/petsc/src/dm/impls/da/fdda.c [1]PETSC ERROR: #6 MatView() line 901 in /home/gomer/local/petsc/src/mat/interface/matrix.c
[0]PETSC ERROR: Wrong type of object: Parameter # 1
[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[0]PETSC ERROR: Petsc Release Version 3.7.1, unknown
[0]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named prometheus by gomer Fri May 27 16:29:01 2016 [0]PETSC ERROR: Configure options --with-cc=mpicc --with-cxx=mpicxx --with-fc=mpif90 [0]PETSC ERROR: #4 AOApplicationToPetsc() line 267 in /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c [0]PETSC ERROR: #5 MatView_MPI_DA() line 557 in /home/gomer/local/petsc/src/dm/impls/da/fdda.c [0]PETSC ERROR: #6 MatView() line 901 in /home/gomer/local/petsc/src/mat/interface/matrix.c


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