This paper presents an overview of OMPi, a portable implementation of the OpenMP API for C, adhering to the recently released version 2.0 of the standard. OMPi is a C-to-C translator which takes C code with OpenMP directives and produces equivalent C code which uses POSIX threads, similarly to other publicly available implementations. However, in contrast to the latter, OMPi is written entirely...

VSIPL and OpenMP are two open standards for portable high performance computing. VSIPL delivers optimized single processor performance while OpenMP provides a low overhead mechanism for executing thread based parallelism on shared memory systems. Image processing is one of the main areas where VSIPL and OpenMP can have a large impact. Currently, a large fraction of image processing applications...

In this work we show how automatic relative debugging can be used to find differences in computation between a correct serial program and an OpenMP parallel version of that program that does not yield correct results. Backtracking and re-execution are used to determine the first OpenMP parallel region that produces a difference in computation that may lead to an incorrect value the user has ind...

Recent emerging many-core-on-a-chip architectures present massive on-chip parallelism through hardware support for multithreading. In order to achieve fast development of parallel applications that exploit this massive intrachip parallelism to achieve highly sustainable performance, suitable programming models are needed. OpenMP, the industry de facto standard for writing parallel programs on s...