Shri, That code cannot be right. When you copy the App to A it does not have the same nonzero pattern. You should not use a MatCopy() there you should use a MatHeaderMerge() or a MatHeaderReplace() whichever one is right.
Then try running with a big DA to see how long it takes. Barry On Sep 2, 2010, at 10:17 AM, Leo van Kampenhout wrote: > Hello Shri, > > thanks for the fix. The error is now gone but the loading of the Mat takes > now infinitely long.. help!! > > Leo > > > 2010/9/2 Shri <abhyshr at mcs.anl.gov> > Pushed. Please let me know if you get any errors. > Shri > > > ----- Barry Smith wrote: > > > if (size > 1) { > /* change viewer to display matrix in natural ordering */ > ierr = MatShellSetOperation(A, MATOP_VIEW, (void (*)(void)) > MatView_MPI_DA);CHKERRQ(ierr); > /* turn off loading of matrix because loading would require proper > permutation I don't feel like writing now */ > ierr = MatShellSetOperation(A, MATOP_LOAD, (void (*)(void)) > 0);CHKERRQ(ierr); > } > > > Shri, > > Could you please add the support for this? And push to petsc-dev > > Thanks > > Barry > > > On Sep 1, 2010, at 10:23 AM, Leo van Kampenhout wrote: > > > Using a DA, of equal size and type as the other one. The curious thing is > that there are no problems on a single core run. (but that is not what I want > ;) > > > > 2010/9/1 Barry Smith <bsmith at mcs.anl.gov> > > > > > Did you get the matrix in the writer code using a DA or some other code > that puts the vector from the 2d or 3d problem in the natural ordering on the > binary file. > > > > Barry > > On Sep 1, 2010, at 9:55 AM, Leo van Kampenhout wrote: > > Hi all, > > I'm having trouble with MatLoad on Petsc-Dev. Not sure if this problem also > exists in the main PETSc 3.1 since my code won't compile on that. > > > The problematic calls are as follows: > > call PetscViewerBinaryOpen(PETSC_COMM_WORLD,file2, > > > & FILE_MODE_READ,fd,ierr) > call DAGetMatrix(da,MATMPIAIJ,A,ierr) > > > > > call MatLoad(A,fd,ierr) > > which supposedly will load a matrix A which is stored by the following > commands: > > > > > > call PetscViewerBinaryOpen(PETSC_COMM_WORLD,file2, > & FILE_MODE_WRITE,fd,ierr) > > > > > call MatView(A,fd,ierr) > > by another program (on a single core). The MatLoad() does work perfectly on a > single core, however two or more cores make the program crash with the > following error (see below) > > > > > The programcall is > mpirun -n 2 ./main > > Is something broken with Petsc or do I need to set some extra parameters? > > > > > Thanks in advance, > > Leo van Kampenhout > > PS. I'm using a build from last friday, since when I updated petsc-dev today > using Mercurial I couldnt get it to configure or compile :S (which is another > subject) > > > > > > > [0]PETSC ERROR: --------------------- Error Message > ------------------------------------ > [0]PETSC ERROR: No support for this operation for this object type! > [0]PETSC ERROR: MatLoad is not supported for type: mpiaij! > > > > > [0]PETSC ERROR: > > ------------------------------------------------------------------------ > [0]PETSC ERROR: Petsc Development HG revision: > 84fec3ca75412473b06251029b58f2a68f1334f3 HG Date: Fri Aug 27 07:06:08 2010 > +0200 > > > > > [0]PETSC ERROR: See docs/changes/index.html for recent updates. > [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting. > [0]PETSC ERROR: See docs/index.html for manual pages. > [0]PETSC ERROR: > ------------------------------------------------------------------------ > > > > > [0]PETSC ERROR: ./main on a arch-linu named wingtip72 by csg4035 Wed Sep 1 > > 15:52:11 2010 > [0]PETSC ERROR: Libraries linked from > /net/users/csg/csg4035/install/petsc-dev/arch-linux-gnu-c-debug/lib > [0]PETSC ERROR: Configure run at Fri Aug 27 08:37:32 2010 > > > > > [0]PETSC ERROR: Configure options > [0]PETSC ERROR: > ------------------------------------------------------------------------ > [0]PETSC ERROR: MatLoad() line 843 in src/mat/interface/matrix.c > > > > > > > > > > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20100902/24c43c66/attachment.html>