Re: Option with HYPRE and KSP

["Ben Tay" <zonexo@xxxxxxxxx>]

Ya, bcgs worked, solving my own problem. But it doesn't seem to work with the test examples like ex1f or ex2f.

On 4/9/07, Boyce Griffith <griffith@xxxxxxxxxxxx> wrote:

Barry Smith wrote:
>
> On Mon, 9 Apr 2007, Ben Tay wrote:
>> 3. why can't I use bcgs  or bicg with hypre?
>
>    hypre doesn't support applying the transpose of the preconditioner that
> bcgs and bicg need?

I don't believe that Bi-CGSTAB (-ksp_type bcgs) uses matrix or
preconditioner transposes.  On the other hand, bicg does.

-- Boyce