[petsc-users] Petsc with mumps single precision

[hong at aspiritech.org]

Sylvain :
You should be able to do so. Build petsc and mumps with single precision
'--with-precision=single --download-mumps --download-scalapack ...'

Hong

> 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?
>
> Thanks,
> Sylvain