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

[Roy S. <roy...@ic...>]

On Thu, 28 Jun 2018, Renato Poli wrote:

> How can I do this (I am not a MPI guy at all, so please be patient ...):

> > ... after each processor makes its own local vector, just
> > allgather those into a giant serial vector ...

I'm not a big fan of MPI myself, which is why we've got it wrapped up
as much as possible.

https://github.com/libMesh/libmesh/blob/716878d0c5631a7b7488c88fd1de78025231b115/include/parallel/communicator.h#L664

is the comment (with API below) for what I described above.
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Roy