[petsc-users] New matrix with same distribution as an old submatrix

[Barry Smith]

  Use MatGetLocalSizes() in the K_sub and then create the new matrix with those local sizes.


> On Mar 17, 2016, at 9:33 PM, Tabrez Ali <tabrezali at gmail.com> wrote:
> 
> Hello
> 
> Lets say I create a submatrix K_sub from a larger matrix K using MatGetSubMatrix. Now how do I create a new matrix M which has the same parallel distribution as K_sub?
> 
> Thanks in advance.
> 
> Tabrez