Separate HTML for Basic Foil 80 New Data Mapping Features in HPF 2.0

Basic HTML version of Foils prepared 17 Sept 1996

Foil 80 New Data Mapping Features in HPF 2.0 - II

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

Distribution is now allowed to Processor Subsets with typical Syntax:

!HPF$ PROCESSORS procs(1:np)
!HPF$ PROCESSORS b(BLOCK) ONTO procs(1:np/2-1)

Distribution is allowed for Derived Types but can only be done at ONE level

TYPE bunch_of_meshes
- REAL A1(100,100,100), A2(100,100,100)
- !HPF$ DISTRIBUTE (BLOCK,CYCLIC,*) :: A1,A2
END TYPE
Another Example shows distribution outside TYPE definition
TYPE tree with each node having one hundred children
- TYPE(tree) , POINTER, DIMENSION(100) :: children
- !HPF$ DYNAMIC children
- REAL value
END TYPE
TYPE(tree) actualtree
ALLOCATE ( actualtree%children) allocates POINTERs to children
!HPF$ REDISTRIBUTE t%children(BLOCK) distributes (for first time) these pointers