[petsc-users] quad precision solvers

[Jed Brown]

Santiago Andres Triana <repepo at gmail.com> writes:

> Hi petsc-users,
>
> What solvers (either petsc-native or external packages) are available for
> quad precision (i.e. __float128) computations? 

All native solvers and none of the external packages.

> I am dealing with a large (1e6 x 1e6), sparse, complex-valued,
> non-hermitian, and non-symmetric generalized eigenvalue problem. So
> far I have been using mumps (Krylov-Schur) with double precision but
> I'd like to have an idea about the rounding off errors I might be
> incurring.
>
> Thanks in advance for any comments!
> Cheers, Andres.