Electronic Structure Calculations and Adaptation Scheme in Multi-core Computing Environments

Authors:
Lakshminarasimhan Seshagiri;Masha Sosonkina;Zhao Zhang
Affiliations:
Ames Laboratory, Iowa State University, Ames, USA IA 50011;Ames Laboratory, Iowa State University, Ames, USA IA 50011;Department of Electrical and Computer Engineering, Iowa State University, Ames, USA IA 50011
Venue:
ICCS '09 Proceedings of the 9th International Conference on Computational Science: Part I
Year:
2009

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Abstract

Multi-core processing environments have become the norm in the generic computing environment and are being considered for adding an extra dimension to the execution of any application. The T2 Niagara processor is a very unique environment where it consists of eight cores having a capability of running eight threads simultaneously in each of the cores. Applications like General Atomic and Molecular Electronic Structure (GAMESS), used for ab-initio molecular quantum chemistry calculations, can be good indicators of the performance of such machines and would be a guideline for both hardware designers and application programmers. In this paper we try to benchmark the GAMESS performance on a T2 Niagara processor for a couple of molecules. We also show the suitability of using a middleware based adaptation algorithm on GAMESS on such a multi-core environment.