) Objectives The material covered to this point discussed how multiple processes can share data stored in separate memory spaces (See Section 1.1-Parallel Architectures ). This is achieved by sending messages between processes Parallel w o covers the issue of how data are distributed among l/ 0 devices. While the memory subsystem can be different from machine to machine the logical methods of accessing memory are generally common, i.e., the same model should apply from machine to machine Parallel w/O is complicated in that both the physical and logical configurations often differ from machine to machineObjectives • The material covered to this point discussed how multiple processes can share data stored in separate memory spaces (See Section 1.1 - Parallel Architectures). This is achieved by sending messages between processes. • Parallel I/O covers the issue of how data are distributed among I/O devices. While the memory subsystem can be different from machine to machine, the logical methods of accessing memory are generally common, i.e., the same model should apply from machine to machine. • Parallel I/O is complicated in that both the physical and logical configurations often differ from machine to machine