[petsc-dev] error reading binary file

[Mark F. Adams]

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

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