Option with HYPRE and KSP

Boyce Griffith griffith at cims.nyu.edu
Sun Apr 8 21:02:24 CDT 2007

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

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