Separate HTML for Basic Foil 7 What gives high performance in HPF

Basic HTML version of Foils prepared 16 Sept 1995

Foil 7 What gives high performance in HPF

From HPFtutorial CPS615 Basic Simulation Track for Computational Science -- Fall Semester 95. by Geoffrey C. Fox(Tomasz Haupt)

There is tradeoff between parallelism and communication

Programmer defines the data mapping

Underlaying assumptions are that:

An operation on two or more data object is likely to be carried out much faster if they all reside in the same processor,

and that it may be possible to carry out many such operations concurrently if they can be performed on different processors