Separate HTML for Basic Foil 38 Distribution Directive in HPF

Basic HTML version of Foils prepared 17 Sept 1996

Foil 38 Distribution Directive 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

Syntax:

!HPF$ DISTRIBUTE distributee (dist-format)

[ONTO dist-target]

Allowed forms of dist-format:

* -- Implies no distribution in this index
BLOCK -- Critical to minimize communication
CYCLIC -- Critical for load balancing
BLOCK(int-expr) -- Not Obviously useful!
CYCLIC(int-expr) -- Very useful

Examples:

CHPF$ DISTRIBUTE TEMP(BLOCK,CYCLIC)
!HPF$ DISTRIBUTE FRED(BLOCK(10)) ONTO P
*HPF$ DISTRIBUTE (BLOCK,*) :: MYTEMPLATE