[petsc-users] GMRES solver

[Mohamad M. Nasr-Azadani]

Thanks Jed for the point.

Best,
Mohamad


On Sun, Jan 8, 2012 at 6:54 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Sun, Jan 8, 2012 at 20:28, Mohamad M. Nasr-Azadani <mmnasr at gmail.com>wrote:
>
>> Maybe I was not 100% clear, the way that I dealt with the nullspace was
>> to set the pressure to zero at one node in the entire domain.
>
>
> Well, this pollutes the spectrum, although most preconditioners fix it. We
> recommend using KSPSetNullSpace() instead.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120108/2fdd8468/attachment.htm>