[petsc-users] MatZeroRows and MATELEMENTAL

[Barry Smith]

> On Oct 26, 2014, at 4:32 AM, Francesco Ballarin <francesco.ballarin at polimi.it> wrote:
> 
> Dear PETSc users,
> I have a code for PETSc 3.3 in which the PLAPACK interface, now discontinued, was used. I am trying to update it to PETSc 3.5.2, using the Elemental interface. 
> 
> I see that MatZeroRows is not implemented for MATELEMENTAL. What function should I use instead? Does it also support the version with optional arguments x and b?

   Unfortunately due to Elemental’s complicated parallel storage of matrix entries we don’t have any routines to do this. (We don’t even have routines to generically set values INSERT_VALUES) on other processes. cc:ing Elemental’s author to see what he suggests.

  Barry

> 
> Thanks,
> best regards,
> Francesco