[Insight-users] Mersenne Twister not thread safe and not documented as such

[Luis Ibanez]

Hi Neil,

Thanks for pointing this out.

A comment has been added to the documentation of this class:

http://public.kitware.com/cgi-bin/viewcvs.cgi/Code/Common/itkMersenneTwisterRandomVariateGenerator.h?root=Insight&r1=1.8&r2=1.9&sortby=date

http://public.kitware.com/cgi-bin/viewcvs.cgi/Code/Common/itkMersenneTwisterRandomVariateGenerator.h?root=Insight&sortby=date&view=log


    Regards,


         Luis


------------------------------------
On Wed, Aug 5, 2009 at 11:53 AM, Neil Weisenfeld <weisen at crl.med.harvard.edu
> wrote:

> Hi all,
>
> Due to bug # 4846 discussed here:
>
> http://www.itk.org/pipermail/insight-users/2007-April/021842.html
>
> the Mersenne Twister is not thread safe.  A side effect is that the
> random iterators are not thread safe.
>
> Luis's suggestion to convert the MT back to a normal Object seems the
> most sensible, however since this hasn't happened, maybe it would be
> easier to add mutex locks around the few Get*Variate*() calls
> affected?  Or can we at least add it to the documentation that these
> are not thread safe?
>
> What do people think?
>
>
> Thanks,
> Neil
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