[petsc-users] MatFindOffBlockDiagonalEntries error

Fri Jun 19 12:35:36 CDT 2020

This is more useful and you are getting a new error. Maybe the old error is
fixed.
It looks like you are trying to copy a matrix into another but they have
different communicators.  For example, one is created with MPI_COMM_WOLD
and the other with PETSC_COMM_WORLD.

On Fri, Jun 19, 2020 at 12:48 PM Eda Oktay <eda.oktay at metu.edu.tr> wrote:

> Dear Mark,
>
> I updated Petsc and again, here's the error:
>
> [0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [0]PETSC ERROR: Arguments must have same communicators
> [0]PETSC ERROR: [1]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [1]PETSC ERROR: Arguments must have same communicators
> [1]PETSC ERROR: Different communicators in the two objects: Argument #
> 1 and 2 flag 3
> [1]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [1]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [1]PETSC ERROR: [2]PETSC ERROR: [3]PETSC ERROR: ---------------------
> Error Message
> --------------------------------------------------------------
> [3]PETSC ERROR: Arguments must have same communicators
> [3]PETSC ERROR: Different communicators in the two objects: Argument #
> 1 and 2 flag 3
> [3]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [3]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [3]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [3]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
> --download-mpich --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> Different communicators in the two objects: Argument # 1 and 2 flag 3
> [0]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [0]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [0]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
> --download-mpich --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> [0]PETSC ERROR: #1 MatCopy() line 4044 in
> /home/edaoktay/petsc-3.13.2/src/mat/interface/matrix.c
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [1]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
> --download-mpich --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> [1]PETSC ERROR: #1 MatCopy() line 4044 in
> /home/edaoktay/petsc-3.13.2/src/mat/interface/matrix.c
> [3]PETSC ERROR: #1 MatCopy() line 4044 in
> /home/edaoktay/petsc-3.13.2/src/mat/interface/matrix.c
> [0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [0]PETSC ERROR: Nonconforming object sizes
> [1]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [1]PETSC ERROR: Nonconforming object sizes
> [1]PETSC ERROR: Non conforming matrix add: global sizes 1 x 72, 1 x 72
> [3]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [3]PETSC ERROR: Nonconforming object sizes
> [3]PETSC ERROR: Non conforming matrix add: global sizes 16 x 72, 16 x 72
> [3]PETSC ERROR: [0]PETSC ERROR: Non conforming matrix add: global
> sizes 52 x 72, 52 x 72
> [0]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [0]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [0]PETSC ERROR: [1]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [1]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [1]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> See https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [3]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [3]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [3]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
> --download-mpich --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> [0]PETSC ERROR: [1]PETSC ERROR: Configure options --with-cc=gcc
> --with-cxx=g++ --download-mpich --download-openblas --download-slepc
> --download-metis --download-parmetis --download-chaco --with-X=1
> [1]PETSC ERROR: #2 MatAXPY() line 72 in
> /home/edaoktay/petsc-3.13.2/src/mat/utils/axpy.c
> Configure options --with-cc=gcc --with-cxx=g++ --download-mpich
> --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> [3]PETSC ERROR: #2 MatAXPY() line 72 in
> /home/edaoktay/petsc-3.13.2/src/mat/utils/axpy.c
> #2 MatAXPY() line 72 in /home/edaoktay/petsc-3.13.2/src/mat/utils/axpy.c
>
> Elapsed time: 2.5e-01
>
> --------------------- Error Message
> --------------------------------------------------------------
> [2]PETSC ERROR: Arguments must have same communicators
> [2]PETSC ERROR: Different communicators in the two objects: Argument #
> 1 and 2 flag 3
> [2]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [2]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [2]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [2]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
> --download-mpich --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> [2]PETSC ERROR: #1 MatCopy() line 4044 in
> /home/edaoktay/petsc-3.13.2/src/mat/interface/matrix.c
> [2]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [2]PETSC ERROR: Nonconforming object sizes
> [2]PETSC ERROR: Non conforming matrix add: global sizes 3 x 72, 3 x 72
> [2]PETSC ERROR: See
> https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> shooting.
> [2]PETSC ERROR: Petsc Release Version 3.13.2, Jun 02, 2020
> [2]PETSC ERROR:
> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> 19:44:41 2020
> [2]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
> --download-mpich --download-openblas --download-slepc --download-metis
> --download-parmetis --download-chaco --with-X=1
> [2]PETSC ERROR: #2 MatAXPY() line 72 in
> /home/edaoktay/petsc-3.13.2/src/mat/utils/axpy.c
>
> What can be the reason?
>
> Mark Adams <mfadams at lbl.gov>, 19 Haz 2020 Cum, 18:41 tarihinde şunu yazdı:
> >
> > I don't know what is going on here. There was an update to this function
> about a year ago, so that might fix your problem.
> >
> > We would need you to test with a current version.
> >
> > Mark
> >
> > On Fri, Jun 19, 2020 at 11:23 AM Eda Oktay <eda.oktay at metu.edu.tr>
> wrote:
> >>
> >> Hi all,
> >>
> >> I am trying to find off block diagonal entries of a matrix and I am
> >> trying to use MatFindOffBlockDiagonalEntries. However, although my
> >> matrix is not NULL, I am getting an error message as follows:
> >>
> >> 1]PETSC ERROR: --------------------- Error Message
> >> --------------------------------------------------------------
> >> [1]PETSC ERROR: [2]PETSC ERROR: --------------------- Error Message
> >> --------------------------------------------------------------
> >> [2]PETSC ERROR: Null argument, when expecting valid pointer
> >> [2]PETSC ERROR: Null Object: Parameter # 1
> >> [2]PETSC ERROR: See
> >> http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> >> shooting.
> >> [2]PETSC ERROR: Petsc Release Version 3.11.1, Apr, 12, 2019
> >> [2]PETSC ERROR: [3]PETSC ERROR: --------------------- Error Message
> >> --------------------------------------------------------------
> >> [3]PETSC ERROR: Null argument, when expecting valid pointer
> >> [3]PETSC ERROR: Null Object: Parameter # 1
> >> [3]PETSC ERROR: See
> >> http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble
> >> shooting.
> >> [3]PETSC ERROR: Null argument, when expecting valid pointer
> >> [1]PETSC ERROR: Null 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 3.11.1, Apr, 12, 2019
> >> [1]PETSC ERROR:
> >> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> >> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> >> 18:19:11 2020
> >> [1]PETSC ERROR: Configure options --download-mpich --download-openblas
> >> --download-slepc --download-metis --download-parmetis --download-chaco
> >> --with-X=1
> >> [1]PETSC ERROR: #1 ISGetSize() line 510 in
> >> /home/edaoktay/petsc-3.11.1/src/vec/is/is/interface/index.c
> >> [1]PETSC ERROR:
> >> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> >> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> >> 18:19:11 2020
> >> [2]PETSC ERROR: Configure options --download-mpich --download-openblas
> >> --download-slepc --download-metis --download-parmetis --download-chaco
> >> --with-X=1
> >> [2]PETSC ERROR: #1 ISGetSize() line 510 in
> >> /home/edaoktay/petsc-3.11.1/src/vec/is/is/interface/index.c
> >> [2]PETSC ERROR: #2 MatFindOffBlockDiagonalEntries_MPIAIJ() line 211 in
> >> /home/edaoktay/petsc-3.11.1/src/mat/impls/aij/mpi/mpiaij.c
> >> [2]PETSC ERROR: #2 MatFindOffBlockDiagonalEntries_MPIAIJ() line 211 in
> >> /home/edaoktay/petsc-3.11.1/src/mat/impls/aij/mpi/mpiaij.c
> >> [1]PETSC ERROR: #3 MatFindOffBlockDiagonalEntries() line 10502 in
> >> /home/edaoktay/petsc-3.11.1/src/mat/interface/matrix.c
> >> #3 MatFindOffBlockDiagonalEntries() line 10502 in
> >> /home/edaoktay/petsc-3.11.1/src/mat/interface/matrix.c
> >> Petsc Release Version 3.11.1, Apr, 12, 2019
> >> [3]PETSC ERROR:
> >> ./approx_cut_deneme_clustering_son_final_edgecut_without_parmetis on a
> >> arch-linux2-c-debug named b342.wls.metu.edu.tr by edaoktay Fri Jun 19
> >> 18:19:11 2020
> >> [3]PETSC ERROR: Configure options --download-mpich --download-openblas
> >> --download-slepc --download-metis --download-parmetis --download-chaco
> >> --with-X=1
> >> [3]PETSC ERROR: #1 ISGetSize() line 510 in
> >> /home/edaoktay/petsc-3.11.1/src/vec/is/is/interface/index.c
> >> [3]PETSC ERROR: #2 MatFindOffBlockDiagonalEntries_MPIAIJ() line 211 in
> >> /home/edaoktay/petsc-3.11.1/src/mat/impls/aij/mpi/mpiaij.c
> >> [3]PETSC ERROR: #3 MatFindOffBlockDiagonalEntries() line 10502 in
> >> /home/edaoktay/petsc-3.11.1/src/mat/interface/matrix.c
> >>
> >> And the program is still running.
> >>
> >> The part of my program is :
> >>
> >>   Mat Ais;
> >>   MatCreateSubMatrix(A,idUi,idUi,MAT_INITIAL_MATRIX,&Ais);
> >>   ISSetPermutation(idUi);
> >>   MatPermute(Ais,idUi,idUi,&PL);
> >>   IS offd;
> >>   MatFindOffBlockDiagonalEntries(PL,&offd);
> >>
> >> Since there isn't any examples for this function, I couldn't
> >> understand what should I do. Since it says in the error that it is
> >> about parameter 1, the matrix, I don't know how to solve the problem.
> >> My matrix PL is parallel sparse. I know there shouldn't be any problem
> >> in PL since I can view PL by using MatView.
> >>
> >> Thanks!
> >>
> >> Eda
>
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