Mine works in serial but not in parallel. It looks like vecs are created in MatLoad via MatMPIAIJSetPreallocation_MPIAIJ and they are not split wrt blocks. here is the stack trace again:
[0]PETSC ERROR: PetscSplitOwnership() line 93 in /Users/markadams/Codes/petsc-dev/src/sys/utils/psplit.c [0]PETSC ERROR: PetscLayoutSetUp() line 147 in /Users/markadams/Codes/petsc-dev/src/vec/vec/impls/mpi/pmap.c [0]PETSC ERROR: MatMPIAIJSetPreallocation_MPIAIJ() line 3194 in /Users/markadams/Codes/petsc-dev/src/mat/impls/aij/mpi/mpiaij.c [0]PETSC ERROR: MatMPIAIJSetPreallocation() line 3928 in /Users/markadams/Codes/petsc-dev/src/mat/impls/aij/mpi/mpiaij.c [0]PETSC ERROR: MatLoad_MPIAIJ() line 3442 in /Users/markadams/Codes/petsc-dev/src/mat/impls/aij/mpi/mpiaij.c [0]PETSC ERROR: MatLoad() line 881 in /Users/markadams/Codes/petsc-dev/src/mat/interface/matrix.c [0]PETSC ERROR: main() line 109 in src/ksp/ksp/examples/tutorials/ex10.c On Jun 12, 2012, at 5:43 PM, Jed Brown wrote: > On Tue, Jun 12, 2012 at 4:45 PM, Mark F. Adams <mark.adams at columbia.edu> > wrote: > Satish beat me to it. I still get the same error ... did you use > -mat_block_size 3? > > I will look in to further. > > ~/petsc/src/ksp/ksp/examples/tutorials$ ./ex10 -f0 binaryoutput-sym > -ksp_monitor -pc_type gamg -mat_block_size 3 > [0]PCSetData_AGG bs=3 MM=89373 > 0 KSP Residual norm 4.854898290598e-03 > 1 KSP Residual norm 1.748948970672e-03 > 2 KSP Residual norm 1.098105829371e-03 > 3 KSP Residual norm 7.267836867590e-04 > 4 KSP Residual norm 4.752091560022e-04 > 5 KSP Residual norm 3.152074302240e-04 > 6 KSP Residual norm 1.998139269819e-04 > 7 KSP Residual norm 1.142295077940e-04 > 8 KSP Residual norm 6.107885553654e-05 > 9 KSP Residual norm 2.903395117932e-05 > 10 KSP Residual norm 1.748667302607e-05 > 11 KSP Residual norm 9.864255584167e-06 > 12 KSP Residual norm 5.077178570024e-06 > 13 KSP Residual norm 2.996102603244e-06 > 14 KSP Residual norm 2.293954251541e-06 > 15 KSP Residual norm 1.977076000505e-06 > 16 KSP Residual norm 1.729762967197e-06 > 17 KSP Residual norm 1.422352992308e-06 > 18 KSP Residual norm 1.063366577331e-06 > 19 KSP Residual norm 7.479518697501e-07 > 20 KSP Residual norm 4.861597752713e-07 > 21 KSP Residual norm 2.996075502312e-07 > 22 KSP Residual norm 1.962056634115e-07 > 23 KSP Residual norm 1.216036063867e-07 > 24 KSP Residual norm 8.556036439634e-08 > 25 KSP Residual norm 5.911194128322e-08 > 26 KSP Residual norm 3.784597093891e-08 > Number of iterations = 26 > Residual norm 7.51457e-10 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120612/85781f6f/attachment.html>
