[petsc-users] solving sub problems serially

[Jed Brown]

On Sun, Mar 10, 2013 at 1:41 PM, Gideon Simpson <gideon.simpson at gmail.com>wrote:

> I'm working on a monte carlo problem where each node needs the same
> solution of a small scale eigenvalue problem.  I have in mind to use slepc
> to to use to get the solution, since it has all the necessary algorithms,
> but I am trying to understand how to get my code to have that problem
> solved locally, serially, within the context of a larger parallel problem.
>  Is it sufficient to just declare the matrix associated with the eigenvalue
> problem to be of sequential type?


This is why every constructor takes a communicator. Just create those
subproblems on PETSC_COMM_SELF.
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