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This work presents a performance evalualion of the portability platforms PVM and MPI when running on both a distributed computing system and a parallel architecture the IBM SP2. The evaluation is performed on the implementation of a number of sorting parallel algorithms. Four implementalion of MPI and PVM are considered: the IBM MPI and the IBM PVMe (both running in the SP2); the MPICH and the PVM (both running in a distributed computing system). The parallel algorithms were developed and the results obtained are used to establish a comparison between the different environments and between the severa! sorting algorithms implemented. The sequential algorithms were also analysed allowing the speedup evalualion for the execufion in each environment. The global results obtained make possible to verify and to demonstrate (for the particular environment considered) that the PVM presents better performance in distributed computing environment and the MPI behaves more adequately in parallel architectures.

Análise de Desempenho de Algoritmos Paralelos Utilizando Plataformas de Portabilidade