[petsc-users] About MatView

[Longyin Cui]

Hi dear whoever reads this:

I have a quick question:
After matrix assembly, suppouse I have matrix A. Assuming I used 16
processors, if I want each processor to print out their local contents of
the A, how do I proceed? (I simply want to know how the matrix is stored
from generating to communicating to solving, so I get to display all the
time to get better undersdtanding)

I read the examples, and I tried things like below and sooooo many
different codes from examples, it still is not working.
       PetscViewer viewer;
       PetscMPIInt my_rank;
       MPI_Comm_rank(PETSC_COMM_WORLD,&my_rank);
       PetscPrintf(MPI_COMM_SELF,"[%d] rank\n",my_rank);
       PetscViewerASCIIOpen(MPI_COMM_SELF,NULL,&viewer);
       PetscViewerPushFormat(viewer,PETSC_VIEWER_ASCII_INFO);
       MatView(impOP,viewer);

Plea......se give me some hints

Thank you so very much!


Longyin Cui (or you know me as Eric);
Student from C.S. division;
Cell: 7407047169;
return 0;
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