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Sequential and parallel molecular mechanics calculations

D N White1

  • 1Department of Chemistry, University of Glasgow, Scotland.

Journal of Molecular Graphics
|June 1, 1996
PubMed
Summary
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This study presents a gradient algorithm for optimizing molecular structures computationally. The VULCAN Fortran program implementation details, including acceleration techniques and potential pitfalls, are discussed for various computer systems.

Area of Science:

  • Computational chemistry
  • Molecular modeling
  • Algorithm development

Background:

  • Accurate molecular structure prediction is crucial in computational chemistry.
  • Existing optimization algorithms may have limitations in efficiency and applicability.

Purpose of the Study:

  • To describe a gradient algorithm for computational optimization of molecular structures.
  • To discuss the practical implementation and compromises of this algorithm in a Fortran program (VULCAN).

Main Methods:

  • Development and description of a gradient-based computational optimization algorithm.
  • Implementation of the algorithm in a Fortran program (VULCAN) for sequential and parallel computing.
  • Analysis of algorithm properties, acceleration techniques, and potential issues.

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Main Results:

  • The article details the VULCAN program, an implementation of the gradient algorithm.
  • Comparison of various acceleration techniques for gradient algorithms.
  • Identification of potential challenges and "traps" in the practical application of the algorithm.

Conclusions:

  • The gradient algorithm offers a method for computational molecular structure optimization.
  • The VULCAN program provides a practical, albeit with inherent compromises, implementation for diverse computing environments.
  • Understanding algorithm properties and potential pitfalls is key for effective use.