The OpenMP (http://www.openmp.org/) application program interface (API) 
supports multi-platform shared-memory programming on Unix platforms
and Microsoft Windows NT architectures. Jointly defined by a
group of major computer hardware and software vendors, OpenMP
is a portable, scalable model that gives shared-memory
programmers a simple and flexible interface for developing parallel
applications for platforms ranging from the desktop to the
supercomputer.


-- NK