Multitasking the calculation of angular integrals on the CRAY-2 and CRAY X-MP

C. Froese Fischer*, N. S. Scott, J. Yoo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

At the first VAPP conference attention was drawn to the difficulty of calculating angular integrals on the CRAY-1. In this paper we describe how multitasking on the CRAY-2 and CRAY X-MP can be exploited to improve the efficiency of the calculation of angular integrals. Timings for the CRAY-2 and CRAY X-MP are presented. One surprising result is that for this application the CRAY X-MPis faster than the CRAY-2 in both unitasking and multitasking modes.

Original languageEnglish
Pages (from-to)385-390
Number of pages6
JournalParallel Computing
Volume8
Issue number1-3
DOIs
Publication statusPublished - Oct 1988

Keywords

  • Angular integral
  • atomic scattering
  • atomic structure
  • CRAY X-MP
  • CRAY-2
  • dynamic load balancing
  • multitasking
  • Racah coefficient
  • recoupling coefficient

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications
  • Computer Graphics and Computer-Aided Design
  • Artificial Intelligence

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