Basic HTML version of Foils prepared 17 Sept 1996

Foil 28 Template in HPF

From New CPS615HPF and Fortran90 Discussion Sept 17 96 Basic Simulation Track for Computational Science CPS615 -- Fall Semester 96. by Geoffrey C. Fox, Tom Haupt
A Template is an abstract space of indexed positions (an "array of nothings")
In CMFortran terminology, Template is set of Virtual Processors -- one per data point
  • Template typically specifies precisely the full natural data parallelism that is natural for problem and HPF maps this problem parallelism onto particular machine
A template is declared by the TEMPLATE directive that specifies:
  • name of the template
  • the rank (i.e., number of dimensions)
  • the extent in each dimension
Examples:
  • CHPF$ TEMPLATE T(1000)
  • !HPF$ TEMPLATE FRED(N, 2*N)
  • *HPF$ TEMPLATE, DIMENSION(5,100,50) :: MINE, YOURS

© on Tue Oct 7 1997