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jWork.ORG Our mission is to promote scientific computing for science and education. We believe 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 help 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.

Dr. S.V.Chekanov. jWork.ORG founder

Is java7 faster than java6?


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

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

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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