implicit parallelism
<parallel> A feature of a programming language for a parallel processing
system which decides automatically which parts to run in parallel.
The best way of providing implicit parallelism is still (1995) an active
research topic. The problem is to generate the right number of parallel tasks of
the right size (or "granularity"). Too many tasks and the system gets bogged
down in house-keeping, or memory for waiting tasks runs out, too few tasks and
processors are left idle.
The best performance is usually achieved with explicit parallelism where the
programmer can annotate his program to indicate which parts should be executed
as independent parallel tasks.
(1995-02-16)
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Imperial College of Science, Technology and Medicine
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