HPJava: Data Parallel Extensions to Java

Bryan Carpenter, Guansong Zhang, Geoffrey Fox
Xinying Li, Yuhong Wen
NPAC at Syracuse University
Syracuse, NY 13244
{dbc,zgs,gcf,xli,wen}@npac.syr.edu

February 7, 1998

Abstract:

We outline an extension of Java for programming with distributed arrays. The basic programming style is Single Program Multiple Data (SPMD), but parallel arrays are provided as new language primitives. Further extensions include three distributed control constructs, the most important being a data-parallel loop construct. Communications involving distributed arrays are handled through a standard library of collective operations. Because the underlying programming model is SPMD programming, direct calls to MPI or other communication packages are also allowed in an HPJava program.

• Introduction.
• Distributed arrays.
• The on construct and the active process group.
• Locations and the at construct.
• Distributed loops.
• Discussion.
• References.
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