Parallel Programming Using OpenMP

Abstract

• OpenMP stands for “Open Multi-Processing” • OpenMP is a multi-vendor (see next page) standard to perform shared-memory multithreading • OpenMP uses the fork-join model • OpenMP is both directiveand library-based • OpenMP threads share a single executable, global memory, and heap (malloc, new) • Each OpenMP thread has its own stack (function arguments, function return address, local variables) • Using OpenMP requires no dramatic code changes • OpenMP probably gives you the biggest multithread benefit per amount of work you have to put in to using it