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arXiv 2005.10431physics.comp-phcond-mat.mtrl-sci
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SPARC:从头计算实空间的模拟软件包

SPARC: Simulation Package for Ab-initio Real-space Calculations

Qimen Xu, Abhiraj Sharma, Benjamin Comer, Hua Huang, Edmond Chow, Andrew J. Medford, John E. Pask, Phanish Suryanarayana

摘要:

我们提出了一个新的模拟包从头计算的真实空间计算。ESTA可以执行Kohn-Sham密度泛函理论计算的孤立系,如分子以及扩展系统,如晶体和表面,在静态和动态设置。它易于安装/使用,与最先进的平面波代码相比具有很强的竞争力,在少量处理器上表现出相当的性能,并随着处理器数量的增加而增加优势。值得注意的是,对于在大规模并行计算机上使用$\mathcal{O}(100-500)$原子的系统,并行计算将求解时间缩短到几秒钟,比平面波的求解时间高出一个数量级甚至更多。

英文摘要:

We present SPARC: Simulation Package for Ab-initio Real-space Calculations. SPARC can perform Kohn-Sham density functional theory calculations for isolated systems such as molecules as well as extended systems such as crystals and surfaces, in both static and dynamic settings. It is straightforward to install/use and highly competitive with state-of-the-art planewave codes, demonstrating comparable performance on a small number of processors and increasing advantages as the number of processors grows. Notably, SPARC brings solution times down to a few seconds for systems with $\mathcal{O}(100-500)$ atoms on large-scale parallel computers, outperforming planewave counterparts by an order of magnitude and more.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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