[petsc-users] On PCFIELDSPLIT and its implementation

[Jed Brown]

You do if preconditioners (like AMG) will use it or if using functions like MatSetValuesBlocked(). If you have uniform block structure, it doesn't hurt.

Edoardo alinovi <edoardo.alinovi at gmail.com> writes:

> Hi Guys,
>
> Very quick one. Do I need to set the block size with MPIAIJ?