On Mar 4, 2011, at 3:42 AM, Chao Yang wrote:
> Dear PETSc team,
>
> I am developing a code using PETSc on GPU. In the code an SOR preconditioner
> is needed.
> Is there an available version of SOR for matrix of seqcusp type in the
> current petsc-dev?
No. The problem is that SOR is a sequential algorithm, there is not much
parallelism in it and GPUs require/use a great deal of parallelism to get good
performance.
Do you have alternatives? How about diagonal scaled CG or Bi-CG-stab?
Barry
> Thanks!
>
> Best regards,
>
> Chao Yang
