[petsc-users] Should the vactor be partitioned?

[Satish Balay]

If you are using the default partitioning for both Mat and Vec - then
they will match. [provided the sizes match]

Satish

On Mon, 29 Nov 2010, Peter Wang wrote:

> 
> I am trying to solver a sparse linear system (Ax=b) by PETSc. 
>  
> I noticed the parallel partitioning of the matrix is determined by PETSc at runtime by calling MatGetOwnerShipRange().
>  
> I am wondering if the right hand side vector (b) should be partitioned by Calling VecGetOwnerShipRange(), Since I didn't see it is called in example code of ex2f.F  on webpage of : http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-2.3.3/src/ksp/ksp/examples/tutorials/ex2f.F.html .
>  
> Thanks.
>