NWChem: New Functionality

NWChem is a computational chemistry code designed for efficient execution on massively parallel computers. Through effective use of the aggregate resources of such computers, NWChem enables much larger and more accurate production simulations than previously feasible. In this paper we briefly describe the NW Chemarchitecture and highlight some of the new capabilities in NW Chem.

[1]  Dennis R. Salahub,et al.  Molecular excitation energies to high-lying bound states from time-dependent density-functional response theory: Characterization and correction of the time-dependent local density approximation ionization threshold , 1998 .

[2]  Michael J. Frisch,et al.  Toward a systematic molecular orbital theory for excited states , 1992 .

[3]  Robert J. Harrison,et al.  Global arrays: A nonuniform memory access programming model for high-performance computers , 1996, The Journal of Supercomputing.

[4]  Curtis L. Janssen,et al.  The automated solution of second quantization equations with applications to the coupled cluster approach , 1991 .

[5]  Qin Wu,et al.  Direct method for optimized effective potentials in density-functional theory. , 2002, Physical review letters.

[6]  Eric J. Bylaska,et al.  Parallel Implementation of the Projector Augmented Plane Wave Method for Charged Systems , 2002 .

[7]  M. Head‐Gordon,et al.  On the Nature of Electronic Transitions in Radicals: An Extended Single Excitation Configuration Interaction Method , 1996 .

[8]  Bryan Carpenter,et al.  ARMCI: A Portable Remote Memory Copy Libray for Ditributed Array Libraries and Compiler Run-Time Systems , 1999, IPPS/SPDP Workshops.

[9]  R. Harrison,et al.  AB Initio Molecular Electronic Structure on Parallel Computers , 1994 .

[10]  E. Davidson The iterative calculation of a few of the lowest eigenvalues and corresponding eigenvectors of large real-symmetric matrices , 1975 .

[11]  A. Daniel Boese,et al.  New exchange-correlation density functionals: The role of the kinetic-energy density , 2002 .

[12]  J. Olsen,et al.  Solution of the large matrix equations which occur in response theory , 1988 .

[13]  Benjamin T. Miller,et al.  A parallel implementation of the analytic nuclear gradient for time-dependent density functional theory within the Tamm–Dancoff approximation , 1999 .

[14]  Ian T. Foster,et al.  ChemIo: High Performance Parallel I/o for Computational Chemistry Applications , 1998, Int. J. High Perform. Comput. Appl..

[15]  So Hirata,et al.  Time-dependent density functional theory for radicals: An improved description of excited states with substantial double excitation character , 1999 .

[16]  Stephan Kümmel,et al.  Simple iterative construction of the optimized effective potential for orbital functionals, including exact exchange. , 2003, Physical review letters.

[17]  E. Clementi,et al.  Electric-field induced intramolecular electron transfer in spiro .pi.-electron systems and their suitability as molecular electronic devices. A theoretical study , 1990 .

[18]  Nicholas C. Handy,et al.  Exchange functionals and potentials , 1996 .

[19]  Blöchl,et al.  Projector augmented-wave method. , 1994, Physical review. B, Condensed matter.

[20]  R. Bartlett,et al.  A direct product decomposition approach for symmetry exploitation in many-body methods. I. Energy calculations , 1991 .

[21]  Dennis R. Salahub,et al.  Dynamic polarizabilities and excitation spectra from a molecular implementation of time‐dependent density‐functional response theory: N2 as a case study , 1996 .

[22]  Martin Head-Gordon,et al.  A tensor formulation of many-electron theory in a nonorthogonal single-particle basis , 1998 .

[23]  Message P Forum,et al.  MPI: A Message-Passing Interface Standard , 1994 .

[24]  T P Straatsma,et al.  Molecular structure of the outer bacterial membrane of Pseudomonas aeruginosa via classical simulation. , 2002, Biopolymers.

[25]  R. Ahlrichs,et al.  Treatment of electronic excitations within the adiabatic approximation of time dependent density functional theory , 1996 .

[26]  David E. Bernholdt,et al.  High performance computational chemistry: An overview of NWChem a distributed parallel application , 2000 .