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Next: 4.2.8 Communication primitives
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Contents
4.2.7 Distributed memory communication
Many parallel systems are not constructed in a way where it is
possible or practical for an application to use shared memory
for communication. For example cluster systems consist of individual computers
connected by a fast network. On such systems their is no notion of shared memory
at the system level. For this sort of system the WRAPPER provides support
for communication based on a bespoke communication library
(see figure 4.6). The default communication library used is MPI
![[*]](crossref.png) . However, it is relatively straightforward to implement bindings to
optimized platform specific communication libraries. For example the work
described in substituted standard MPI communication for a
highly optimized library.
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