[petsc-users] Domain partitioning using DAs

[Jed Brown]

On Fri, Oct 7, 2011 at 02:58, Mohamad M. Nasr-Azadani <mmnasr at gmail.com>wrote:

> How does DACreate3d() partition the domain among processors?
> Is it based on the minimizing the surface between the processors? Or it is
> just a simple x-y-z order?
>

It tries to produce a "squarish" partition based on divisibility of the
number of processes. It will only partition in one direction if you use a
prime number of processes, for example.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111007/6b10538c/attachment.htm>