A Survey
of MPI Implementations
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MPI does not specify behavior of some aspects of MPI implementations.
These include
- Buffering. MPI does not specify how much buffering must be provided by
an implementation.
- Standard I/O. MPI does not require that standard language I/O
facilities be provided.
- Process startup and management. MPI does not specify how processes are started
up or shut down. In particular, the state of a program before MPI_Init
and after MPI_Finalize is not specified.
It is where MPI does not specify behavior that implementations differ.
Applications that do not make assumptions about these features are
portable. Portability issues are discussed in more detail in
Section 7.
Copyright © 1996
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