Parallelization of MRCI based on hole-particle symmetry |
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Authors: | Suo Bing Zhai Gaohong Wang Yubin Wen Zhenyi Hu Xiangqian Li Lemin |
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Affiliation: | Institute of Modern Physics, Northwest University, Xian 710069, People's Republic of China. |
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Abstract: | The parallel implementation of multireference configuration interaction program based on the hole-particle symmetry is described. The platform to implement the parallelization is an Intel-Architectural cluster consisting of 12 nodes, each of which is equipped with two 2.4-G XEON processors, 3-GB memory, and 36-GB disk, and are connected by a Gigabit Ethernet Switch. The dependence of speedup on molecular symmetries and task granularities is discussed. Test calculations show that the scaling with the number of nodes is about 1.9 (for C1 and Cs), 1.65 (for C2v), and 1.55 (for D2h) when the number of nodes is doubled. The largest calculation performed on this cluster involves 5.6 x 10(8) CSFs. |
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Keywords: | quantum chemistry MRCISD parallelization hole‐particle symmetry Intel‐Architectural cluster |
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