Advances, Applications and Performance of the Global Arrays Shared Memory Programming Toolkit

  • Authors:

  • Jarek Nieplocha;Bruce Palmer;Vinod Tipparaju;Manojkumar Krishnan;Harold Trease;Edoardo Aprà/

  • Affiliations:

  • COMPUTATIONAL SCIENCES AND MATHEMATICS DEPARTMENT, PACIFIC NORTHWEST NATIONAL LABORATORY, RICHLAND, WA 99352/;-;-;-;COMPUTATIONAL SCIENCES AND MATHEMATICS DEPARTMENT, PACIFIC NORTHWEST NATIONAL LABORATORY, RICHLAND, WA 99352;WILLIAM R. WILEY ENVIRONMENTAL MOLECULAR SCIENCES LABORATORY, PACIFIC NORTHWEST NATIONAL LABORATORY, RICHLAND, WA 99352

  • Venue:
  • International Journal of High Performance Computing Applications
  • Year:
  • 2006

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Abstract

This paper describes capabilities, evolution, performance, and applications of the Global Arrays (GA) toolkit. GA was created to provide application programmers with an inteface that allows them to distribute data while maintaining the type of global index space and programming syntax similar to that available when programming on a single processor. The goal of GA is to free the programmer from the low level management of communication and allow them to deal with their problems at the level at which they were originally formulated. At the same time, compatibility of GA with MPI enables the programmer to take advatage of the existing MPI software/libraries when available and appropriate. The variety of applications that have been implemented using Global Arrays attests to the attractiveness of using higher level abstractions to write parallel code.