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High-performance evaluation of high angular momentum 4-center Gaussian integrals on modern accelerated processors

Computational Physics 2023-12-20 v3 Computational Engineering, Finance, and Science Chemical Physics

Abstract

We present a high-performance evaluation method for 4-center 2-particle integrals over Gaussian atomic orbitals with high angular momenta (l4l\geq4) and arbitrary contraction degrees on graphical processing units (GPUs) and other accelerators. The implementation uses the matrix form of McMurchie-Davidson recurrences. Evaluation of the 4-center integrals over four l=6l=6 (ii) Gaussian AOs in the double precision (FP64) on an NVIDIA V100 GPU outperforms the reference implementation of the Obara-Saika recurrences (Libint{\tt Libint}) running on a single Intel Xeon core by more than a factor of 1000, easily exceeding the 73:1 ratio of the respective hardware peak FLOP rates while reaching almost 50\% of the V100 peak. The approach can be extended to support AOs with even higher angular momenta; for lower angular momenta (l3l\leq3) additional improvements will be reported elsewhere. The implementation is part of an open-source LibintX{\tt LibintX} library feely available at https://github.com/ValeevGroup/LibintX.

Keywords

Cite

@article{arxiv.2307.03452,
  title  = {High-performance evaluation of high angular momentum 4-center Gaussian integrals on modern accelerated processors},
  author = {Andrey Asadchev and Edward F. Valeev},
  journal= {arXiv preprint arXiv:2307.03452},
  year   = {2023}
}

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23 pages