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Java poweredOur mission is to promote science and education via scientific computing. We believe that any knowledge software should be free and accessible for education and research. It should be available on all platforms for all people. Computers and scientific programs are helping us to uncover the world around us. We pledge for sharing scientific algorithms and tools. If you are a professional, contribute with your code here. If not, use our software to learn how to use computers for education and knowledge discovery.

How fast jHepWork is for data manipulation compared to Java?

Submitted by jworkorg on Sun, 01/22/2012 - 22:53

You may ask: how fast jHepWork is for data analysis compared to Java and Jython? The answer is given in this online manual: http://jwork.org/jhepwork/wikidoc/doku.php?id=public:data_collections#da... For manipulations with arrays of primitive values, it is a factor 4-5 faster than Java (ArrayList) and a factor 8 faster than Python/Jython list. The speed is largely due to DataArray classes from the Colt project, which is compatible with the Trove package.

2011 Open Source Awards by PACKT Publishing

Submitted by jworkorg on Sat, 09/24/2011 - 12:42

As the name suggests, the award is now opened up to a wider range of Open Source projects. This year’s Award is our most exciting and we’re expecting up to 4 million visits during the Award period. Feel free to check out information about the Awards here. The winner will win a $2,500 prize fund, while the first runner-up will receive $1,000 and the second runner-up $500.

Is java7 faster than java6?

Submitted by jworkorg on Thu, 08/25/2011 - 21:55

 

There was recent discussion about Java7 performance for numerical calculations. Few people saw some 20-40% improvement for java7, compare to Java6. This simple script which can be executed in jhepwork shows no such improvement. Run this code above (here I'm using 2 cores) and see it yourself:

Java7 bug (or feature?) on linux

Submitted by jworkorg on Fri, 07/29/2011 - 10:28

According to the forum  http://jwork.org/jhepwork/forum/viewtopic.php?id=13   just released Java7 has a bug on Linux platform. It seems like execution of the code for jhplot canvases compiled using jdk6 fails.  This bug is perfectly reproducible on the  Linux (Ubuntu, Fedora) and related to the graphics package  org.freehep.graphics2d.VectorGraphics. Interestingly enough, Jdk7 on windows is fine. This bug was sent to the java7 developers, but they could not reproduce it.

Why Java 7 is faster for numerical calculations

Submitted by jworkorg on Tue, 07/26/2011 - 15:14

JDK 7 Twice as Fast as JDK 6 for Arrays and Arithmetic. Should see this after the final Java7 release http://geeknizer.com/java-7-whats-new-performance-benchmark-1-5-1-6-1-7/

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Spotlights

JabRef is an open source bibliography reference manager. The native file format used by JabRef is BibTeX, the standard LaTeX bibliography format

Java News

Java 7 is released for public in August 2011

Recent news

jHepWork 3.3 is released on January 22. Complete rewrite of the core containers to speed up calculations. See http://jwork.org/jhepwork/download