(1) Refers to a
computer system's ability to
support more than one
process (
program) at the same time. Multiprocessing
operating systems enable several programs to
run concurrently.
UNIX is one of the most widely used multiprocessing
systems, but there are many others, including
OS/2 for high-end
PCs. Multiprocessing systems are much more complicated than single-process systems because the operating system must allocate
resources to competing processes in a reasonable manner.
(2) Refers to the utilization of multiple CPUs in a single computer system. This is also called parallel processing.
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