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GAMESS-UK

GAMESS-UK is an ab initio molecular electronic structure program for performing SCF- , DFT-, and MCSCF-gradient calculations, together with a variety of techniques for post Hartree Fock calculations. Based on the original GAMESS software from the National Resource for Computational Chemistry (NRCC, 1981), development of the code over the past decade has been coordinated by the Daresbury Laboratory as part of the CCP1 project (formally under the auspicies of the UK Science and Engineering Research Council, SERC, and more recently through the Engineering and Physical Sciences Research Council, EPSRC).

This development continues to be carried out by an International Consortium comprising Dr. M.F. Guest (Daresbury Laboratory), Dr J.H. van Lenthe (Utrecht University, Netherlands) and Dr. J. Kendrick (Institute of Pharmaceutical Innovation, Bradford University, U.K.).

CCLRC has granted the above consortium, through Computing for Science Ltd, a license to market the code and related products, with a view to generating income to be dedicated to the upkeep, development and maintenance of the software.

GAMESS-UK 7.0 Features

  • Hartree Fock:
    • Segmented, generally contracted and harmonic basis sets.
    • SCF-Energies: conventional and in-core.
    • SCF-Gradients: conventional and in-core.
    • SCF-Frequencies: numerical and analytical 2nd derivatives.
    • Parallelized conventional SCF.
    • Restricted and unrestricted open shell SCF.
    • Generalized valence bond.
  • Density Functional Theory
    • Energies and gradients for closed and open shell systems.
    • A wide variety of exchange, correlation and exchange + correlation functionals, including: LYP, B3LYP, BLYP, BP86, BP97, B97, HCTH 93 ( 120, 147 & 407 ), PBE, Fialtov Thiel '97, PWG1, B97-1(&2), EDF1 and others.
    • Energy and gradients can be evaluated for Meta-GGA functionals, including BB95, B1B95 and BB1K.
    • Optimised Fitted Coulomb Module.
    • Analytic and Numerical 2nd derivatives.
    • Parallelized implementation
  • Electron Correlation:
    • MP2 Frequencies for closed and open shell.
    • MP3 Energies.
    • MCSCF Energies and gradients.
    • CASSCF Energies, gradients and numerical 2nd derivatives.
    • MR-DCI Energies, properties and transition moments.
    • CCSD and CCSD(T) Energies.
    • RPA (direct) and MCLR excitation energies and oscillator strengths.
    • Full-CI Energies.
    • Green's functions calculations of Ionization Potentials.
  • Capabilities:
    • Direct-SCF and -DFT Energies, analytical gradients, and numerical 2nd derivatives.
    • Direct-MP2 Energies, analytical gradients, and numerical 2nd derivatives.
    • Direct-RPA computation of excitation energies.
    • Semi-direct MRDCI energies.
    • Parallelized direct-SCF and direct-MP2 gradients, direct-SCF frequencies, and direct-RPA.
  • Molecular Properties:
    • Mulliken and Lowdin population analysis.
    • Electrostatic Potential-Derived Charges.
    • Distributed Multipole Analysis.
    • Morokuma Analysis.
    • Natural Bond Orbital (NBO) Analysis.
    • Interface to Bader's AIMPAC code.
    • IR and Raman Intensities.
    • Multipole Moments.
    • Polarizabilities, Hyperpolarizabilities and Magnetizabilities
    • Relativistic Effects (ZORA).
    • Solvation Effects (DRF).
  • Pseudopotentials:
    • Local and non-local pseudopotentials, with the ability to calculate the second derivatives of the energy.
  • Hybrid QM + MM:.
    • Interface to Charmm.
    • Interface to ChemShell.
  • Semi-empirical:
    • MNDO, AM1, and PM3 hamiltonians.
  • Visualisation:
    • Pre- and post-processing.
    • View both scalar and vector data with the CCP1GUI

Portability and Performance Figures

GAMESS-UK has been ported to a very wide range of serial and parallel computer platforms. Summaries of hardware platforms, and GAMESS-UK performance benchmarks are available. An extensive series of computational chemistry benchmarks have been carried out, and copies of the associated MS powerpoint presentation are available in both HTMLand PDF format. Both report and presentation have recently been updated to include performance figures for the NEC SX-5, EV68-based Compaq Alphaserver ES45/1000, EV67-based ES40/6-833, DS20E/6-667, XP1000 and API CS20/6-833 and UP2000/6-667, the power4-based RS/6000 p-Series 690 and power3-based SP/WH2-375 from IBM, 500 MHz Origin3800/R14k from SGI, PA8700-based J6700 from Hewlett Packard, and 1000 MHz PentiumIII, 2.0 GHz Pentium 4 and Athlon K7/1400 PC's (December 2001).

The Parallel Implementation

Much of the functionality of GAMESS-UK runs efficiently on parallel computer platforms, making use of the virtual shared memory model provided by the Global Array toolkit. As well as general summary of the parallelisation of the code, detailed information is available on recent developments on the IBM/SP2 and Cray T3E and on Beowulf Systems.
The latter presentation also provides performance data on the SGI Origin 3800, Compaq AlphaServer SC and a prototype of the alpha-based Cray SuperCluster.

Further Information is Available

Acknowledgement and Citation

GAMESS-UK is the result of the work of many groups, the work of which is acknowledged in the paper pointed to by the official citation. The official citation for the program, is as follows:

GAMESS-UK is a package of ab initio programs. See: "http://www.cfs.dl.ac.uk/gamess-uk/index.shtml", M.F. Guest, I. J. Bush, H.J.J. van Dam, P. Sherwood, J.M.H. Thomas, J.H. van Lenthe, R.W.A Havenith, J. Kendrick, "The GAMESS-UK electronic structure package: algorithms, developments and applications",Molecular Physics, Vol. 103, No. 6-8, 719-747.

Additional information on how to cite GAMESS-UK can be found here.

 
 
   
 
 
For more information about the work of the Computational Chemistry Group please contact Paul Sherwood p.sherwood@dl.ac.uk or Bill Smith w.smith@dl.ac.uk

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