[petsc-users] MG Preconditioning

[Jed Brown]

On Fri, Aug 31, 2012 at 10:06 PM, Matthew Knepley <knepley at gmail.com> wrote:

> True, but the backtrace also shows that comm = 0x0 on the call to
> KSPCreate(), which
> leads me to believe that your petsc4py has not initialized PETSc, and
> therefor not
> initialized PETSC_COMM_WORLD.
>

Could catch, maybe PetscFunctionBegin() should check that PETSc has been
initialized.
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