Multi-level parallelization of quantum-chemical calculations
Journal Article
·
· Journal of Chemical Physics
- National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
- Ames Lab., and Iowa State Univ., Ames, IA (United States)
Here, strategies for multiple-level parallelizations of quantum-mechanical calculations are discussed, with an emphasis on using groups of workers for performing parallel tasks. These parallel programming models can be used for a variety ab initio quantum chemistry approaches, including the fragment molecular orbital method and replica-exchange molecular dynamics. Strategies for efficient load balancing on problems of increasing granularity are introduced and discussed. A four-level parallelization is developed based on a multi-level hierarchical grouping, and a high parallel efficiency is achieved on the Theta supercomputer using 131 072 OpenMP threads.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 1986176
- Report Number(s):
- IS-J-11,077; TRN: US2402979
- Journal Information:
- Journal of Chemical Physics, Vol. 158, Issue 16; ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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