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Java programming for high-performance numerical computing

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6 Author(s)
Moreira, J.E. ; IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598, USA ; Midkiff, S.P. ; Gupta, M. ; Artigas, P.V.
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First proposed as a mechanism for enhancing Web content, the Java™ language has taken off as a serious general-purpose programming language. Industry and academia alike have expressed great interest in using the Java language as a programming language for scientific and engineering computations. Applications in these domains are characterized by intensive numerical computing and often have very high performance requirements. In this paper we discuss programming techniques that lead to Java numerical codes with performance comparable to FORTRAN or C, the more traditional languages for this field. The techniques are centered around the use of a high-performance numerical library, written entirely in the Java language, and on compiler technology. The numerical library takes the form of the Array package for Java. Proper use of this package, and of other appropriate tools for compiling and running a Java application, results in code that is clean, portable, and fast. We illustrate the programming and performance issues through case studies in data mining and electromagnetism.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Systems Journal  (Volume:39 ,  Issue: 1 )