Titlebook: Recent Advances in Parallel Virtual Machine and Message Passing Interface; 14th European PVM/MP Franck Cappello,Thomas Herault,Jack Dongarr

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Full Bandwidth Broadcast, Reduction and Scan with Only Two Treesollective MPI operations broadcast, reduction and scan. Our algorithms achieve up to . the bandwidth of most previous and commonly used algorithms. In particular, our algorithms for reduction and scan are the currently best known. Experiments on clusters with Myrinet and InfiniBand interconnects sho

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Test Suite for Evaluating Performance of MPI Implementations That Support ,rent threads can execute independently and that the MPI implementation can provide the necessary level of thread safety with only a small overhead. The MPI Standard, however, requires only that no MPI call in one thread block MPI calls in other threads; it makes no performance guarantees. Therefore,

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An Extensible Framework for Distributed Testing of MPI Implementationstion of regression testing is a common mechanism to ensure consistency, accuracy, and repeatability of results. The MPI Testing Tool (MTT) is a flexible framework specifically designed for testing MPI implementations across multiple organizations and environments. The MTT offers a unique combination

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A Virtual Test Environment for MPI Development: Quick Answers to Many Small Questionsmplement handling logic correctly, thorough testing is necessary. However, the cost of providing such diverse setups in real hardware is prohibitively high, resulting in a lack of testing. In this article, we present a . that considerably lowers this barrier by providing complex network environments

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Multithreaded Tomographic Reconstruction this overlapping is usually left to the programmer, but this is a tedious task. Switching from the process model to a threaded model in the parallel environment via user level threads takes advantage of the existing concurrence in an application. In this paper we expose and analyze our research gro

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Parallelizing Dense Linear Algebra Operations with Task Queues in llcd and distributed memory systems..In this work we focus our attention in the . implementation of the .. This model is an extension of the OpenMP standard that allows an elegant implementation of irregular parallelism. We evaluate our approach by comparing the OpenMP and . parallelizations of the sym