We present recent developments of the NTChem program for performing large scale hybrid density functional theory calculations on the supercomputer Fugaku. We combine these developments with our recently proposed complexity reduction framework to assess the impact of basis set and functional choice on its measures of fragment quality and interaction. We further exploit the all electron representation to study system fragmentation in various energy envelopes. Building off this analysis, we propose two algorithms for computing the orbital energies of the Kohn–Sham Hamiltonian. We demonstrate that these algorithms can efficiently be applied to systems composed of thousands of atoms and as an analysis tool that reveals the origin of spectral properties.
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28 April 2023
Research Article|
April 27 2023
Complexity reduction in density functional theory: Locality in space and energy
Special Collection:
High Performance Computing in Chemical Physics
William Dawson
;
William Dawson
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
RIKEN Center for Computational Science
, Kobe, Hyogo 650-0047, Japan
a)Author to whom correspondence should be addressed: [email protected]
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Eisuke Kawashima
;
Eisuke Kawashima
(Investigation, Software, Writing – review & editing)
1
RIKEN Center for Computational Science
, Kobe, Hyogo 650-0047, Japan
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Laura E. Ratcliff
;
Laura E. Ratcliff
(Data curation, Formal analysis, Investigation, Methodology, Writing – review & editing)
2
Centre for Computational Chemistry, School of Chemistry, University of Bristol
, Bristol BS8 1TS, United Kingdom
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Muneaki Kamiya
;
Muneaki Kamiya
(Formal analysis, Software, Writing – review & editing)
3
Faculty of Regional Studies, Gifu University
, Gifu 501-1132, Japan
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Luigi Genovese
;
Luigi Genovese
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Writing – original draft, Writing – review & editing)
4
University Grenoble Alpes, CEA, IRIG-MEM-L_Sim
, 38000 Grenoble, France
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Takahito Nakajima
Takahito Nakajima
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Writing – review & editing)
1
RIKEN Center for Computational Science
, Kobe, Hyogo 650-0047, Japan
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a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the JCP Special Topic on High Performance Computing in Chemical Physics.
J. Chem. Phys. 158, 164114 (2023)
Article history
Received:
January 16 2023
Accepted:
April 10 2023
Citation
William Dawson, Eisuke Kawashima, Laura E. Ratcliff, Muneaki Kamiya, Luigi Genovese, Takahito Nakajima; Complexity reduction in density functional theory: Locality in space and energy. J. Chem. Phys. 28 April 2023; 158 (16): 164114. https://doi.org/10.1063/5.0142652
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