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Benefits of Parallel I/O in Ab Initio Nuclear Physics Calculations

  • Nikhil Laghave
  • Masha Sosonkina
  • Pieter Maris
  • James P. Vary
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5544)

Abstract

Many modern scientific applications rely on highly parallel calculations, which scale to 10’s of thousands processors. However, most applications do not concentrate on parallelizing input/output operations. In particular, sequential I/O has been identified as a bottleneck for the highly scalable MFDn (Many Fermion Dynamics for nuclear structure) code performing ab initio nuclear structure calculations. In this paper, we develop interfaces and parallel I/O procedures to use a well-known parallel I/O library in MFDn. As a result, we gain efficient input/output of large datasets along with their portability and ease of use in the downstream processing.

Keywords

Parallel I/O HDF5 MFDn 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Nikhil Laghave
    • 1
  • Masha Sosonkina
    • 1
  • Pieter Maris
    • 2
  • James P. Vary
    • 2
  1. 1.Ames Laboratory/DOEIowa State UniversityAmesUSA
  2. 2.Physics DepartmentIowa State UniversityAmesUSA

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