理化学研究所 計算科学研究機構

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第77回

第77回 (AICS Cafe Progress Report)
日時: 2015年9月10日 (木)、 15:00 – 16:00
場所: AICS 6階講堂

7月17日 (金) から変更しました。

講演題目: Development of massively parallel algorithm and code for molecular electronic structure calculations on peta-scale supercomputers
講演者: 河東田 道夫 (量子系分子科学研究チーム)
※今回は、採用4年目の特別研究員の研究成果を発表します。

講演要旨: 詳細を見る

Massively parallel computing in the field of theoretical and computational molecular science becomes more important year by year to utilize massively parallel supercomputers to perform the first-principle electronic structure calculations on large-size and complicated molecular systems. Our research team has been developed the novel molecular science software NTChem [1] for the massively parallel computing of electronic structures on the petascale supercomputer such as the K computer. NTChem involves the novel development of theory and algorithm, which make possible through the collaborative use of the K computer across the fields of computational science and computer science. In this talk, I introduce my works about the development of massively parallel algorithms and its implementations into NTChem. We present the overview of the massively parallel algorithm and its implementation of (1) the Hartree-Fock and density functional theory (DFT) self-consistent field calculations [1], (2) the time-dependent DFT excited-state calculation [1], and (3) the resolution of identity second-order Møller–Plesset perturbation (RI-MP2) calculations for energy [3, 4] and energy gradient, respectively.

参考文献:
[1] Nakajima, T.; Katouda, M.; Kamiya, M.; Nakatsuka, Y. Int. J. Quantum Chem. 2015, 115, 349–359. doi: 10.1002/qua.24860.
[2] http://labs.aics.riken.jp/nakajimat_top/ntchem_e.html
[3] Katouda, M.; Nakajima, T. J. Chem. Theory Comput. 2013, 9, 5373–5380. doi: 10.1021/ct400795v.
[4] Katouda, M.; Nakajima, T.; Nagase S. Proceedings of JSST 2012, 2012, 338–343.