Gaussian approximation potentials: Theory, software implementation and application examples.
Gaussian approximation potentials: Theory, software implementation and application examples.
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DOI:
10.1063/5.0160898
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发表时间:
2023-10
期刊:
影响因子:
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通讯作者:
Sascha Klawohn;James P Darby;J. Kermode;Gábor Csányi;Miguel A Caro;Albert P. Bart'ok
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文献类型:
--
作者:
Sascha Klawohn;James P Darby;J. Kermode;Gábor Csányi;Miguel A Caro;Albert P. Bart'ok
Gaussian Approximation Potentials (GAPs) are a class of Machine Learned Interatomic Potentials routinely used to model materials and molecular systems on the atomic scale. The software implementation provides the means for both fitting models using ab initio data and using the resulting potentials in atomic simulations. Details of the GAP theory, algorithms and software are presented, together with detailed usage examples to help new and existing users. We review some recent developments to the GAP framework, including Message Passing Interface parallelisation of the fitting code enabling its use on thousands of central processing unit cores and compression of descriptors to eliminate the poor scaling with the number of different chemical elements.