What message passing protocols are available on Cplant?
The supported protocols for message passing on Cplant are Portals and MPI. Portals provide the low-level communication facility upon which all Cplant applications (user and support) are built. Portals are essentially shared data structures between the application process and the kernel which tell the kernel where to deposit incoming messages. Portals are available to the application through a user-level Portal library, a system-level Portal library, or through direct manipulation of Portal data structures. No special flags are required to compile a code which uses Portals.
