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- W2159097692 abstract "Abstract A finite element, adaptive mesh, free surface seepage parallel algorithm is studied using performance analysis tools in order to optimize its performance. The physical problem being solved is a free boundary seepage problem which is nonlinear and whose free surface is unknown a priori. A fixed domain formulation of the problem is discretized and the parallel solution algorithm is of successive over-relaxation type. During the iteration process there is message-passing of data between the processors in order to update the calculations along the interfaces of the decomposed domains. A key theoretical aspect of the approach is the application of a projection operator onto the positive solution domain. This operation has to be applied at each iteration at each computational point. The VAMPIR and PARAVER performance analysis software are used to analyze and understand the execution behavior of the parallel algorithm such as: communication patterns, processor load balance, computation versus communication ratios, timing characteristics, and processor idle time. This is all done by displays of post-mortem trace-files. Performance bottlenecks can easily be identified at the appropriate level of detail. This will numerically be demonstrated using example test data and comparisons of software capabilities that will be made using the Blue Horizon parallel computer at the San Diego Supercomputer Center." @default.
- W2159097692 created "2016-06-24" @default.
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- W2159097692 date "2005-02-01" @default.
- W2159097692 modified "2023-10-05" @default.
- W2159097692 title "Performance analysis tools applied to a finite element adaptive mesh free boundary seepage parallel algorithm" @default.
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- W2159097692 doi "https://doi.org/10.1016/j.cma.2004.05.014" @default.
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