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https://issues.apache.org/jira/browse/MATH-899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498850#comment-13498850
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Gilles commented on MATH-899:
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bq. a more fine-grained sync would not be of much benefit
Maybe, maybe not.
Another approach (and preferrable in my non-expert opinion) is to use the JDK's
[atomic
utilities|http://docs.oracle.com/javase/1.5.0/docs/api/java/util/concurrent/atomic/package-summary.html].
bq. for just the RNGs this would be feasible
I agree, modulo the above remark.
> 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
>
> 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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