Parallel Performance Studies for a Parabolic Test Problem on maya 2013
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Type of Work7 pages
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SubjectsHigh Performance Computing Facility (HPCF)
parallel performance study
parabolic test problem
time-dependent, scalar, linear reaction-diffusion equation in three dimensions
We report parallel performance studies on the newest portion of the cluster maya in the UMBC High Performance Computing Facility (HPCF), referred to as maya 2013, for a parabolic test problem given by a time-dependent, scalar, linear reaction-diffusion equation in three dimensions. The results show very good performance up to 64 compute nodes and support several key conclusions: (i) The newer nodes are faster per core as well as per node, however, for most serial production code using one of the 2010 nodes with 2.8 GHz is a good default. (ii) The high-performance interconnect supports parallel scalability on at least 64 nodes near-optimally. (iii) It is often faster to use all cores on modern multi-core nodes but it is useful to track memory usage to determine if this is the case for memory-bound code.