Collective Communication
[Developer Documentation]

Collaboration diagram for Collective Communication:

Currently there are only two operations implemented.

MOC_Bcast

The root node sends normal messages using the reserved tag MOC_BCAST_TAG, which is received by all other nodes.

MOC_Barrier

All but the process with the highest rank send a special-message (special-flag set) to the latter process. This process then sends another special-message back to the others. After that the function returns on all calling processes.