What programming models are available on Cplant?
Cplant is a distributed-memory, MIMD machine which supports explicit parallel programming. In explicit parallel programming, the code developer must explicitly decompose data structures into sub units and distribute them among the nodes of the machine. The code written to execute on each node uses standard languages (e.g., Fortran 77, C) for local processing. Messages are passed between nodes using a message-passing protocol (MPI or Portals) to coordinate processing. • 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 direc
