Journal
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
Volume 9, Issue 8, Pages 3385-3392Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ct400054m
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Funding
- Nvidia Corporation
- National Science Foundation Software Infrastructure for Sustained Innovation grant
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A new coupled cluster singles and doubles with triples correction, CCSD(T), algorithm is presented. The new algorithm is implemented in object oriented C++, has a low memory footprint, fast execution time, low I/O overhead, and a flexible storage backend with the ability to use either distributed memory or a file system for storage. The algorithm is demonstrated to work well on single workstations, a small cluster, and a high-end Cray computer. With the new implementation, a CCSD(T) calculation with several hundred basis functions and a few dozen occupied orbitals can run in under a day on a single workstation. The algorithm has also been implemented for graphical processing unit (GPU) architecture, giving a modest improvement. Benchmarks are provided for both CPU and GPU hardware.
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