[Gretl-devel] Re: MPI - sending data between nodes
On Wed, 28 Aug 2019, Sven Schreiber wrote:
Am 28.08.2019 um 09:43 schrieb Marcin Błażejowski:
> Hi,
>
> I wonder if there are some options for sending/brodcasting arrays and/or
> bundles over the MPI world?
Arrays - I don't think so, but the gretl MPI doc says about bundles:
"for bundles only mpisend, mpirevc and mpibcast are supported", so yes.
One point to note: if you can avoid sending bundles, by sending
matrices or scalars, that's going to be a good deal more efficient.
The point is that bundles are sent via their serialization as XML
while matrices and scalars can be sent by much more direct means.
We should probably look into sending arrays; that ought to be
feasible, and relatively efficient.
Allin