Parallel Solution of Magnetotelluric Occam Inversion Algorithm Based on Hybrid MPI/OpenMP Model

Yu Liu; Yi Xiao

doi:10.4028/www.scientific.net/AMM.602-605.3751

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 602-605Parallel Solution of Magnetotelluric Occam...

Parallel Solution of Magnetotelluric Occam Inversion Algorithm Based on Hybrid MPI/OpenMP Model

Abstract:

In order to improve the efficiency of magnetotelluric Occam inversion algorithm (MT Occam), a parallel algorithm is implemented on a hybrid MPI/OpenMP parallel programming model to increase its convergence speed and to decrease the operation time. MT Occam is partitioned to map the task on the parallel model. The parallel algorithm implements the coarse-grained parallelism between computation nodes and fine-grained parallelism between cores within each node. By analyzing the data dependency, the computing tasks are accurately partitioned so as to reduce transmission time. The experimental results show that with the increase of model scale, higher speedup can be obtained. The high efficiency of the parallel partitioning strategy of the model can improve the scalability of the parallel algorithm.

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Periodical:

Applied Mechanics and Materials (Volumes 602-605)

Pages:

3751-3754

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.602-605.3751

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Online since:

August 2014

Authors:

Yu Liu*, Yi Xiao

Keywords:

Hybrid Parallel Model, Occam Inversion, Parallel Computing

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References

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