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Uncontracted Rys Quadrature Implementation of up to G Functions on Graphical Processing Units
Andrey Asadchev1, Veerendra Allada1, Jacob Felder1
1Department of Chemistry and Department of Electrical and Computer Engineering Iowa State University and Ames Laboratory, Ames, Iowa 50011.
Abstract:
An implementation is presented of an uncontracted Rys quadrature algorithm for electron repulsion integrals, including up to g functions on graphical processing units (GPUs). The general GPU programming model, the challenges associated with implementing the Rys quadrature on these highly parallel emerging architectures, and a new approach to implementing the quadrature are outlined. The performance of the implementation is evaluated for single and double precision on two different types of GPU devices. The performance obtained is on par with the matrix-vector routine from the CUDA basic linear algebra subroutines (CUBLAS) library.
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