Thanks very much Roy, that's done the trick.
Peter

On 16/02/15 17:30, Roy Stogner wrote:
>
> On Mon, 16 Feb 2015, Peter Wijeratne wrote:
>
>> Still having the same problem. I now initialise using the
>> Communicator from LibMeshInit::comm(); is this correct, or should I
>> be creating my own Communicators?
>
> No, you'll need to create your own subcommunicators.  The communicator
> from LibMeshInit::comm() is either what you initialized libMesh with
> or MPI_COMM_WORLD; you'll probably want to wrap MPI_COMM_SELF in a
> Parallel::Communicator if you want a mesh that really only lives on
> one processor.
> ---
> Roy

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