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GLOBAL foilset The Future:Petaflop Computers and Java as a High Performance Computational Science and Simulation Language

We describe some of forces and issues which we suggest will lead to Java emerging as the dominant language for scientific and engineering computation.

One Force is the new complex architectures expected for future high performance (petaflop) computers

This implies that other aspects of the Web will become important and in particular Web Servers will be used as a network(web) of computer servers which will allow powerful integration of data and compute services as a "server-server" infrastructure Some of this is the natural consequence of the WebWindows picture of future software infrastructure Here "HPF on the Web" Programming Laboratory as an example

We discuss both intrinsic reasons why Java is more attractive than Fortran77/90 for Computational Science (I.e. Scientific and Engineering Computation) and Issues in extending Java to support both coordination and data parallelism (HPJava)

Table of Contents for The Future:Petaflop Computers and Java as a High Performance Computational Science and Simulation Language

• First Architectures
• Then Software

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Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu