[petsc-users] mutiple DA

[Barry Smith]

   So long as you have the same boundary types and the same array sizes in the i and j direction they give the same distribution.

    Barry
On Jul 7, 2012, at 3:58 PM, Panruo Wu wrote:

> Hello,
> 
> If I create 2 DAs with (almost) identical parameters except DA name
> and dof like:
> 
> call DMDACreate2d(PETSC_COMM_WORLD, DMDA_BOUNDARY_GHOSTED,
> DMDA_BOUNDARY_GHOSTED, &
>   stype, M, N, m, n, dof1, s &
>   PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, &
>   da1, ierr)
> 
> 
> 
> call DMDACreate2d(PETSC_COMM_WORLD, DMDA_BOUNDARY_GHOSTED,
> DMDA_BOUNDARY_GHOSTED, &
>   stype,  M, N, m, n, dof2, s &
>   PETSC_NULL_INTEGER, PETSC_NULL_INTEGER, &
>   da2, ierr)
> 
> 
> my question is, will the two DAs have the same distribution scheme?
> Specifically,
> will the DMDAGetCorners() give the same results when querying da1 & da2?
> 
> Thanks,
> Panruo Wu