> On Feb 28, 2016, at 11:18 AM, Guo, Hanqi <[email protected]> wrote: > > Yes. It works without MPIIO.
We've never added support for saving sparse matrices with MPIIO; likely it would not be much faster and it would be a lot of work to code. If you are just saving matrices for testing it doesn't matter anyways; I'd never save matrices in production runs. Barry > > -Hanqi > > --------------- > Hanqi Guo > Postdoctoral Appointee > Mathematics and Computer Science Division > Argonne National Laboratory > 9700 S. Cass Ave., Bldg 240 > Argonne, IL 60439 > e-mail: [email protected] > web: http://www.mcs.anl.gov/~hguo > phone: 630-252-7225 > >> On Feb 28, 2016, at 11:05 AM, Barry Smith <[email protected]> wrote: >> >> >> Does it work without the PetscViewerBinarySetUseMPIIO(viewer, PETSC_TRUE); >> ? >> >> Barry >> >>> On Feb 27, 2016, at 9:57 PM, Guo, Hanqi <[email protected]> wrote: >>> >>> Hi, >>> >>> I am trying to write a sparse matrix to file with MPIIO but failed. I got >>> the same error on vesta (gpfs), my Macbook (local disk), and a linux >>> machine (nfs). The followings are my code snippet and error output. Could >>> anyone help me check the code? Thanks! >>> >>> ... >>> MatCreate(PETSC_COMM_WORLD, &mat); >>> MatSetType(mat, MATMPIAIJ); >>> MatSetSizes(mat, PETSC_DECIDE, PETSC_DECIDE, n, n); >>> MatSetUp(mat); >>> ... >>> // write matrix >>> ... >>> MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY); >>> MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY); >>> >>> PetscViewer viewer; >>> PetscViewerCreate(PETSC_COMM_WORLD, &viewer); >>> PetscViewerSetType(viewer, PETSCVIEWERBINARY); >>> PetscViewerFileSetMode(viewer, FILE_MODE_WRITE); >>> PetscViewerFileSetName(viewer, "sfm.mat"); >>> PetscViewerBinarySetUseMPIIO(viewer, PETSC_TRUE); >>> MatView(mat, viewer); >>> PetscViewerDestroy(&viewer); >>> ... >>> >>> >>> [0]PETSC ERROR: --------------------- Error Message >>> -------------------------------------------------------------- >>> [0]PETSC ERROR: Write to file failed >>> [0]PETSC ERROR: Error writing to file total size 4 err -1 wsize 16 >>> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for >>> trouble shooting. >>> [0]PETSC ERROR: Petsc Release Version 3.6.3, Dec, 03, 2015 >>> [0]PETSC ERROR: Unknown Name on a arch-linux2-c-debug named compute001 by >>> hguo Sat Feb 27 21:40:04 2016 >>> [0]PETSC ERROR: Configure options —prefix=(hidden) --with-fc=0 >>> --download-f2cblaslapack --with-mpi-dir=(hidden) --with-precision=single >>> [0]PETSC ERROR: #1 PetscBinaryWrite() line 405 in >>> (hidden)/petsc-3.6.3/src/sys/fileio/sysio.c >>> [0]PETSC ERROR: #2 MatView_MPIAIJ_Binary() line 1219 in >>> (hidden)/petsc-3.6.3/src/mat/impls/aij/mpi/mpiaij.c >>> [0]PETSC ERROR: #3 MatView_MPIAIJ_ASCIIorDraworSocket() line 1385 in >>> (hidden)/petsc-3.6.3/src/mat/impls/aij/mpi/mpiaij.c >>> [0]PETSC ERROR: #4 MatView_MPIAIJ() line 1470 in >>> (hidden)/petsc-3.6.3/src/mat/impls/aij/mpi/mpiaij.c >>> [0]PETSC ERROR: #5 MatView() line 886 in >>> (hidden)/petsc-3.6.3/src/mat/interface/matrix.c >>> >>> >>> --------------- >>> Hanqi Guo >>> Postdoctoral Appointee >>> Mathematics and Computer Science Division >>> Argonne National Laboratory >>> 9700 S. Cass Ave., Bldg 240 >>> Argonne, IL 60439 >>> e-mail: [email protected] >>> web: http://www.mcs.anl.gov/~hguo >>> phone: 630-252-7225 >>> >> >
