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One of the most important aspects of the usability of an MPI
implementation is how well MPI applications are integrated into the
environment. Some of the important issues are:
In answering these questions, it is often difficult to separate the MPI
implementation from the parallel environment. This review tries to keep
the focus on MPI itself.
- Is the operating system or some other
system software aware of a parallel application as a distinct entity, rather
than as a collection of unrelated serial processes?
- Does the implementation provide flexibility in handling standard
input and output, such as optional broadcasting of stdin and
per-process labeling of stdout. Is standard output available,
without excessive buffering, from all processes?
- Is process management robust? Is a terminal interrupt propagated
to all processes in an MPI application? Can a parallel application
leave unkilled ``orphaned'' processes that must be detected and killed
Sun Nov 9 14:03:51 EST 1997