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doku:vasp-benchmarks [2014/10/21 14:09] – [VSC 2] ir | doku:vasp-benchmarks [2015/02/19 14:34] – ir | ||
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**Figure 5:** real running time depending on the selected mpich environment and the number of processes. Here the number of threads is always 1. | **Figure 5:** real running time depending on the selected mpich environment and the number of processes. Here the number of threads is always 1. | ||
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+ | ===== VSC 3 ===== | ||
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+ | The code was compiled with the intel compiler, intel MKL (BLACS, SCALAPACK), and intel mpi (5.0.0.028). | ||
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+ | Figure 6 shows that the running time of this benchmark substantially decreases with the number of MPI-processes. The decrease in running time with the number of threads is less dominant. However, other applications may exhibit a different behavior. | ||
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+ | **Figure 6:** real running time on eight and 32 nodes depending on the number of MPI processes and the number of threads. | ||
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+ | **Figure 7:** real running time for 16 tasks (MPI processes) per node and one thread depending on the number of nodes. |