Computer Science – Performance
Scientific paper
2010-01-12
Computer Science
Performance
12 pages, 8 figures, talk given at the HLRB, KONWIHR and Linux-Cluster Review and Results Workshop, Garching b. Muenchen, Germ
Scientific paper
This article reports on first results of the KONWIHR-II project OMI4papps at the Leibniz Supercomputing Centre (LRZ). The first part describes Apex-MAP, a tunable synthetic benchmark designed to simulate the performance of typical scientific applications. Apex-MAP mimics common memory access patterns and different computational intensity of scientific codes. An approach for modelling LRZ's application mix is given whichh makes use of performance counter measurements of real applications running on "HLRB II", an SGI Altix system based on 9728 Intel Montecito dual-cores. The second part will show how the Apex-MAP benchmark could be used to simulate the performance of two mathematical kernels frequently used in scientific applications: a dense matrix-matrix multiplication and a sparse matrix-vector multiplication. The performance of both kernels has been intensively studied on x86 cores and hardware accelerators. We will compare the predicted performance with measured data to validate our Apex-MAP approach.
Brehm Matthias
Christadler Iris
Weinberg Volker
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