2e43e4980e
- because we had the scenario, that fragments for a communicator, which was not not yet set up on all procs, arrived and caused problem, we introduced a comm_activate function call, which executes a kind of barrier (using the allreduce functions used for the comm_cid allocation). Setting up the coll-component has moved *after* this barrier, since some coll-modules (e.g. the MagPIe component) might want to communicate using this communicator already (e.g. a comm_split). - adding a new file comm_dyn.c, which basically abstracts the required functionality for connect-accept, and therefore is the 'magic' code (from the MPI point of view) for all dynamically created communicators. This commit was SVN r1900.
This is the world's greatest MPI. ...more to write here should be a short file, referring to the real docs.