[ET Trac] [Einstein Toolkit] #744: Define API for finding out which MPI processes share a host

#744: Define API for finding out which MPI processes share a host -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- This API could be a flesh API, provided by the driver, or could be implemented via aliased functions.

For example:

int CCTK_nHosts(cGH*) int CCTK_MyHost(cGH*)

Probably also functions for mapping:

process <-> (host, hostprocess) host -> (list of processes)