Journal or Book Title
Journal of Chemical Physics
The analytic gradient expression for second-order Z-averaged perturbation theory is revised and its parallel implementation is described in detail. The distributed data interface is used to access molecular-orbital integral arrays stored in distributed memory. The algorithm is designed to maximize the use of local data and reduce communication costs. The iterative solution and the preconditioner used to induce the convergence of the coupled-perturbed Hartree-Fock equations are presented. Several illustrative timing examples are discussed.
Copyright 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
American Institute of Physics
Aikens, Christine Marie; Fletcher, Graham D.; Schmidt, Michael; and Gordon, Mark S., "Scalable Implementation of Analytic Gradients for Second-Order Z-Averaged Perturbation Theory Using the Distributed Data Interface" (2006). Chemistry Publications. 461.