Flexible Data Distribution in PGHPF

Authors:
Mark Leair;Douglas Miles;Vincent Schuster;Michael Wolfe
Affiliations:
-;-;-;-
Venue:
Euro-Par '99 Proceedings of the 5th International Euro-Par Conference on Parallel Processing
Year:
1999

Citing 1
Cited 1

High performance Fortran for highly irregular problems

PPOPP '97 Proceedings of the sixth ACM SIGPLAN symposium on Principles and practice of parallel programming

Processor reordering algorithms toward efficient GEN_BLOCK redistribution

Proceedings of the 2001 ACM symposium on Applied computing

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Abstract

We have implemented the GEN_BLOCK (generalized block) data distribution in PGHPF, our High Performance Fortran implementation. Compared to a BLOCK or CYCLIC distribution, the more flexible GEN_BLOCK distribution allows users to balance the load between processors. Simple benchmark programs demonstrate the benefits of the new distribution format for unbalanced work loads, getting speedup of up to 2X over simple distributions. We also show performance results for a whole application.