[petsc-users] Use MPIAIJ, but receive help information of seqaij

[张国熙]

Hi, all

Recently I'm trying to improve the performance of my program, so I add
-help option to see options available. I think I use MPIAIJ type of MAT,
but I receive information of SEQAIJ.

Is it means actually I am using a sequential matrix type?
If not, how could I get information of MPIAIJ to improve performance?

Code of generating mate
MatCreate(PETSC_COMM_WORLD,&A);
MatSetType(A,MATMPIAIJ);
MatSetSizes(A,PETSC_DECIDE, PETSC_DECIDE,size,size);
MatMPIAIJSetPreallocationCSR(A,Ap,Ai,temp);

Code of getting information
char  common_options[] = "-help  -st_ksp_type preonly -st_pc_type lu
-st_pc_factor_mat_solver_package mumps -mat_mumps_icntl_28 2
-mat_mumps_icntl_29 2";

  ierr = PetscOptionsInsertString(common_options);CHKERRQ(ierr);

Thank you very much
Guoxi