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https://issues.apache.org/jira/browse/MATH-899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499923#comment-13499923
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Thomas Neidhart commented on MATH-899:
--------------------------------------
thanks!
{quote}
I don't understand.
{quote}
Nevermind, I just had something like this in mind:
{noformat}
RandomGenerator orig = new MersenneTwister(1234l);
RandomGenerator wrapper = new SynchronizedRandomGenerator(new
MersenneTwister(1234l));
for (i = 0; i < 100; i++) {
assertEquals(orig.nextGaussian(), wrapper.nextGaussian());
}
... // similar for the other methods
{noformat}
> A random crash of MersenneTwister random generator
> --------------------------------------------------
>
> Key: MATH-899
> URL: https://issues.apache.org/jira/browse/MATH-899
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.0
> Environment: Windows 7, JDK 1.7.05
> Reporter: Alexander Nozik
> Priority: Minor
> Fix For: 3.1
>
> Attachments: SynchronizedRandomGenerator.java,
> SynchronizedRandomGeneratorTest.java
>
>
> There is a very small probability that MersenneTwister generator gives a
> following error:
> java.lang.ArrayIndexOutOfBoundsException: 624
> in MersenneTwister.java line 253
> The error is completely random and its probability is about 1e-8.
> UPD: The problem most probably arises only in multy-thread mode.
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