On Wed, Aug 20, 2014 at 7:53 AM, Sylvain Mercier <[email protected]
> wrote:
> Hi everyone,
>
> I'm using PETSc to solve saddle point systems. I have found a block
> preconditionner which requires to solve a smaller symmetric positive
> definite system. I do it with MUMPS which is fast an robust.
> However, I would like to use this solver in single precision in order to
> compare the performances.
>
> So is it possible to use MUMPS in single precision inside a double
> precision solving with PETSc?
>
No, right now PETSc must have all the same precision. We have investigated
several methods for
using multi-precision, but none has satisfied all our needs.
Thanks,
Matt
> Thanks,
> Sylvain
>
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
