Electronics

Research from B.G. Fitch and co-authors in the area of IBM research and development published

  2008 MAR 31 - (VerticalNews.com) -- "N-body simulations present some of the most interesting challenges in the area of massively parallel computing, especially when the object is to improve the time to solution for a fixed-size problem. The Blue Matter molecular simulation framework was developed specifically to address these challenges, to explore programming models for massively parallel machine architectures in a concrete context, and to support the scientific goals of the IBM Blue Gene((R)) Project," scientists writing in the IBM Journal of Research and Development report.

  "This paper reviews the key issues involved in achieving ultrastrong scaling of methodologically correct biomolecular simulations, particularly the treatment of the long-range electrostatic forces present in simulations of proteins in water and membranes. Blue Matter computes these forces using the particle-particle particle-mesh Ewald (P3ME) method, which breaks the problem up into two pieces, one that requires the use of three-dimensional fast Fourier transforms with global data dependencies and another that involves computing interactions between pairs of particles within a cutoff distance," wrote B.G. Fitch and colleagues.

  The researchers concluded: "We summarize our exploration of the parallel decompositions used to compute these finite-ranged interactions, describe some of the implementation details involved in these decompositions, and present the evolution of strong-scaling performance achieved over the course of this exploration, along with evidence for the quality of simulation achieved."

  Fitch and colleagues published their study in IBM Journal of Research and Development (Blue Matter: Scaling of N-body simulations to one atom per node. IBM Journal of Research and Development, 2008;52(1-2):145-158).

  Additional information can be obtained by contacting B.G. Fitch, IBM Corp., Division Research, Thomas J Watson Research Center, POB 218, Yorktown Hts, NY 10598, USA.

  The publisher of the IBM Journal of Research and Development can be contacted at: IBM Corp., 1 New Orchard Road, Armonk, NY 10504, USA.

  Keywords: Electronics, Electrostatic.

  This article was prepared by VerticalNews Electronics editors from staff and other reports. Copyright 2008, VerticalNews Electronics via VerticalNews.com.