Re: [Libmesh-users] Syncronize a vector among processes

[John P. <jwp...@gm...>]

On Thu, Jun 28, 2018 at 9:49 AM, Renato Poli <re...@gm...> wrote:

> Should I copy-paste code from NumericVector to build mine?
> Any suggestion?
>

I definitely suggest _not_ copy/pasting code!


Another alternative is to sync the solution vector to all processors so
> that everybody can do the same calculation.
> Seems a little inefficient, but is simple-and-easy.
>

If you are not using NumericVector, then there is a Communicator::max()
overload that takes a std::vector<T> of values, but I believe this only
works if there is a valid StandardType<T> specialization for the type T.

Most libMesh objects (LibMeshInit, Mesh, EquationSystems, etc.) provide a
Communicator object via the comm() method, e.g. mesh.comm().max(vec).

-- 
John