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    <p>On 05/27/2016 05:44 PM, Matthew Knepley wrote:<br>
    </p>
    <blockquote
cite="mid:CAMYG4GmFdjdy=tcgpAoKqOER-BvNzvsWEsJd7DEC0kwrV2JRLA@mail.gmail.com"
      type="cite">
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          <div class="gmail_quote">On Fri, May 27, 2016 at 6:34 PM, Paul
            Urbanczyk <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:gomer@stanford.edu" target="_blank">gomer@stanford.edu</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Hello,<br>
              <br>
              I'm having trouble with the MatView function drawing the
              matrix structure(s) when I execute my code on multiple
              processors.<br>
              <br>
              When I run on a single processor, the code runs fine, and
              the graphics window displays cleanly.<br>
            </blockquote>
            <div><br>
            </div>
            <div>Lets start with an example. I do this</div>
            <div><br>
            </div>
            <div>  cd $PETSC_DIR/src/snes/examples/tutorials</div>
            <div>  make ex19</div>
            <div><br>
            </div>
            <div>Make sure it runs</div>
            <div><br>
            </div>
            <div>  ./ex19 -snes_monitor</div>
            <div><br>
            </div>
            <div>Make sure it runs in parallel (maybe you need
              $PETSC_DIR/$PETSC_ARCH/bin/mpiexec)</div>
            <div><br>
            </div>
            <div>  mpiexec -n 2 ./ex19 -snes_monitor</div>
            <div><br>
            </div>
            <div>Make sure it can draw</div>
            <div>
              <div><br class="">
                  mpiexec -n 2 ./ex19 -snes_monitor -mat_view draw
                -draw_pause 1</div>
            </div>
            <div><br>
            </div>
            <div>This runs fine for me. Can you try it?</div>
            <div><br>
            </div>
            <div>  Thanks,</div>
            <div><br>
            </div>
            <div>     Matt</div>
          </div>
        </div>
      </div>
    </blockquote>
    Hello Matt,<br>
    <br>
    Yes, this example seems to run just fine. How should I proceed?<br>
    <br>
    -Paul<br>
    <blockquote
cite="mid:CAMYG4GmFdjdy=tcgpAoKqOER-BvNzvsWEsJd7DEC0kwrV2JRLA@mail.gmail.com"
      type="cite">
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        <div class="gmail_extra">
          <div class="gmail_quote">
            <div><br>
            </div>
            <blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">When
              I run with multiple processors, I get error messages (see
              below).<br>
              <br>
              The matrices are constructed with DMCreateMatrix(da,
              &A_matrix).<br>
              <br>
              I then set the values with
              MatSetValuesStencil(A_matrix,1,&row,2,col_A,value_A,INSERT_VALUES).<br>
              <br>
              Finally, I call
              MatAssemblyBegin(A_matrix,MAT_FINAL_ASSEMBLY) and
              MatAssemblyEnd(A_matrix,MAT_FINAL_ASSEMBLY).<br>
              <br>
              I also test that the matrices are assembled with
              MatAssembled(A_matrix, &is_assembled_bool), and it
              appears they are successfully assembled.<br>
              <br>
              Any help/advice is greatly appreciated.<br>
              <br>
              Thanks in advance!<br>
              <br>
              -Paul Urbanczyk<br>
              <br>
              [0]PETSC ERROR: --------------------- Error Message
              --------------------------------------------------------------<br>
              [0]PETSC ERROR: Invalid argument<br>
              [0]PETSC ERROR: Wrong type of object: Parameter # 1<br>
              [0]PETSC ERROR: See <a moz-do-not-send="true"
                href="http://www.mcs.anl.gov/petsc/documentation/faq.html"
                rel="noreferrer" target="_blank">http://www.mcs.anl.gov/petsc/documentation/faq.html</a>
              for trouble shooting.<br>
              [0]PETSC ERROR: Petsc Release Version 3.7.1, unknown<br>
              [0]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named
              prometheus by gomer Fri May 27 16:29:01 2016<br>
              [0]PETSC ERROR: Configure options --with-cc=mpicc
              --with-cxx=mpicxx --with-fc=mpif90<br>
              [0]PETSC ERROR: #1 AOApplicationToPetsc() line 267 in
              /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c<br>
              [0]PETSC ERROR: #2 MatView_MPI_DA() line 557 in
              /home/gomer/local/petsc/src/dm/impls/da/fdda.c<br>
              [0]PETSC ERROR: #3 MatView() line 901 in
              /home/gomer/local/petsc/src/mat/interface/matrix.c<br>
              [1]PETSC ERROR: --------------------- Error Message
              --------------------------------------------------------------<br>
              [1]PETSC ERROR: Invalid argument<br>
              [1]PETSC ERROR: Wrong type of object: Parameter # 1<br>
              [1]PETSC ERROR: See <a moz-do-not-send="true"
                href="http://www.mcs.anl.gov/petsc/documentation/faq.html"
                rel="noreferrer" target="_blank">http://www.mcs.anl.gov/petsc/documentation/faq.html</a>
              for trouble shooting.<br>
              [1]PETSC ERROR: Petsc Release Version 3.7.1, unknown<br>
              [1]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named
              prometheus by gomer Fri May 27 16:29:01 2016<br>
              [1]PETSC ERROR: Configure options --with-cc=mpicc
              --with-cxx=mpicxx --with-fc=mpif90<br>
              [1]PETSC ERROR: #1 AOApplicationToPetsc() line 267 in
              /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c<br>
              [1]PETSC ERROR: #2 MatView_MPI_DA() line 557 in
              /home/gomer/local/petsc/src/dm/impls/da/fdda.c<br>
              [1]PETSC ERROR: #3 MatView() line 901 in
              /home/gomer/local/petsc/src/mat/interface/matrix.c<br>
              [0]PETSC ERROR: --------------------- Error Message
              --------------------------------------------------------------<br>
              [0]PETSC ERROR: Invalid argument<br>
              [1]PETSC ERROR: --------------------- Error Message
              --------------------------------------------------------------<br>
              [1]PETSC ERROR: Invalid argument<br>
              [1]PETSC ERROR: Wrong type of object: Parameter # 1<br>
              [1]PETSC ERROR: See <a moz-do-not-send="true"
                href="http://www.mcs.anl.gov/petsc/documentation/faq.html"
                rel="noreferrer" target="_blank">http://www.mcs.anl.gov/petsc/documentation/faq.html</a>
              for trouble shooting.<br>
              [1]PETSC ERROR: Petsc Release Version 3.7.1, unknown<br>
              [1]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named
              prometheus by gomer Fri May 27 16:29:01 2016<br>
              [1]PETSC ERROR: Configure options --with-cc=mpicc
              --with-cxx=mpicxx --with-fc=mpif90<br>
              [1]PETSC ERROR: #4 AOApplicationToPetsc() line 267 in
              /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c<br>
              [1]PETSC ERROR: #5 MatView_MPI_DA() line 557 in
              /home/gomer/local/petsc/src/dm/impls/da/fdda.c<br>
              [1]PETSC ERROR: #6 MatView() line 901 in
              /home/gomer/local/petsc/src/mat/interface/matrix.c<br>
              [0]PETSC ERROR: Wrong type of object: Parameter # 1<br>
              [0]PETSC ERROR: See <a moz-do-not-send="true"
                href="http://www.mcs.anl.gov/petsc/documentation/faq.html"
                rel="noreferrer" target="_blank">http://www.mcs.anl.gov/petsc/documentation/faq.html</a>
              for trouble shooting.<br>
              [0]PETSC ERROR: Petsc Release Version 3.7.1, unknown<br>
              [0]PETSC ERROR: ./urbanSCFD on a arch-linux2-c-debug named
              prometheus by gomer Fri May 27 16:29:01 2016<br>
              [0]PETSC ERROR: Configure options --with-cc=mpicc
              --with-cxx=mpicxx --with-fc=mpif90<br>
              [0]PETSC ERROR: #4 AOApplicationToPetsc() line 267 in
              /home/gomer/local/petsc/src/vec/is/ao/interface/ao.c<br>
              [0]PETSC ERROR: #5 MatView_MPI_DA() line 557 in
              /home/gomer/local/petsc/src/dm/impls/da/fdda.c<br>
              [0]PETSC ERROR: #6 MatView() line 901 in
              /home/gomer/local/petsc/src/mat/interface/matrix.c<br>
              <br>
              <br>
            </blockquote>
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          <div><br>
          </div>
          -- <br>
          <div class="gmail_signature">What most experimenters take for
            granted before they begin their experiments is infinitely
            more interesting than any results to which their experiments
            lead.<br>
            -- Norbert Wiener</div>
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