[petsc-users] Matrix assembly error in PETSc

[Wadud.Miah at awe.co.uk]

Hello,

I am running an application code which works with 4, 8 and 18 processes but crashes with 16 processes. I have used MPICH2 and MVAPICH2 (both adhered to the MPI 3.0 standard) and both cause the same problem. I get the following error message:

[12]PETSC ERROR: MatSetValues_MPIAIJ() line 564 in src/mat/impls/aij/mpi/mpiaij.c
[12]PETSC ERROR: MatAssemblyEnd_MPIAIJ() line 680 in src/mat/impls/aij/mpi/mpiaij.c
[12]PETSC ERROR: MatAssemblyEnd() line 4879 in src/mat/interface/matrix.c

[12]     -->  Error in "MatAssemblyEnd()".
[12]     -->  Code: 63

However, I do not get this using the Intel MPI (which adheres to the MPI 2.0 standard) library. Any help will be greatly appreciated.

Regards,

--------------------------
Wadud Miah
HPC, Design and Theoretical Physics
Direct: 0118 98 56220
AWE, Aldermaston, Reading, RG7 4PR




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