title: Computation of the Density Matrix in Electronic Structure Theory in Parallel on Multiple Graphics Processing Units.
abstract: The algorithm developed in Cawkwell, M. J. et al. J. Chem. Theory Comput. 2012 , 8 , 4094 for the computation of the density matrix in electronic structure theory on a graphics processing unit (GPU) using the second-order spectral projection (SP2) method [ Niklasson, A. M. N. Phys. Rev. B 2002 , 66 , 155115 ] has been efficiently parallelized over multiple GPUs on a single compute node. The parallel implementation provides significant speed-ups with respect to the single GPU version with no loss of accuracy. The performance and accuracy of the parallel GPU-based algorithm is compared with the performance of the SP2 algorithm and traditional matrix diagonalization methods on a multicore central processing unit (CPU).
authors.forename: M J
authors.initials: MJ
authors.lastname: Cawkwell
authors.affiliation: School of Materials Engineering, Purdue University , 701 West Stadium Avenue, West Lafayette, Indiana 47907, United States.
authors.forename: M A
authors.initials: MA
authors.lastname: Wood
authors.forename: Anders M N
authors.initials: AM
authors.lastname: Niklasson
authors.forename: S M
authors.initials: SM
authors.lastname: Mniszewski