[petsc-users] PCCOMPOSITE and ApplyTranspose

[Jed Brown]

On Thu, Jun 23, 2011 at 11:13, Andrew T Barker
<Andrew.Barker at colorado.edu>wrote:

> I've made a PCCOMPOSITE that contains two PCSHELLS, both of
> which have a transpose set with PCShellSetApplyTranspose().
> However the composite PC does not seem to support the
> transpose:
>

Yeah, PCApplyTranspose_Composite() has not been implemented. Are you using
additive or multiplicative? Could you explain what the preconditioner is?
(It's possible that there is a different way to do it that would have a
nicer interface, for example, using PCFIELDSPLIT).
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