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From "Sam Halliday (JIRA)" <j...@apache.org>
Subject [jira] Created: (MATH-270) Wrapper layer for F2J translations of BLAS/LAPACK
Date Thu, 28 May 2009 18:53:45 GMT
Wrapper layer for F2J translations of BLAS/LAPACK
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                 Key: MATH-270
                 URL: https://issues.apache.org/jira/browse/MATH-270
             Project: Commons Math
          Issue Type: New Feature
    Affects Versions: 2.1
            Reporter: Sam Halliday


This is part of the proposal to integrate MTJ, netlib-java and commons-math which has been
well received on the developers' list, @see http://www.nabble.com/commons-math,-matrix-toolkits-java-and-consolidation-tt23537813.html

This depends on issue 269.

Netlib-java provides a wrapper layer around Java implementations of BLAS and LAPACK, the industry
standard APIs for linear algebra calculation. This functionality would be of great benefit
to commons-math both internally and as part of the public API.

A major advantage of using netlib-java rather than direct access to Java translations of BLAS/LAPACK
is that natively optimised implementations can be configured at runtime. For most normal desktop
machines, the performance difference is negligible (hey, Java is seriously fast these days!),
but for machines with custom hardware and BLAS/LAPACK implementations (e.g. GPU, FPGA, otherwise
parallel) the performance difference can be orders of magnitude.

The idea would be that commons-math would define an API and use it internally for linear algebra
calculations. The decision to make this part of the public API can be decided afterward.

The author of netlib-java (i.e. me!) is more than happy to release this code under an Apache
licence, however the APIs are copyright the authors of BLAS/LAPACK and therefore BSD licenced
(which I understand is compatible).

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