clipka <ano### [at] anonymousorg> wrote:
> Am 18.03.2015 um 02:48 schrieb Craig Lindley:
>
> > I'm doing this on a Raspberry Pi2 with four cores and it is amazing fast.
> > Unfortunately ArtRays runs for a while and then povray crashes with the
> > following error:
> >
> > povray: /usr/include/boost/thread/pthread/recursive_mutex.hpp:101: void
> > boost::recursive_mutex::lock(): Assertion `!pthread_mutex_lock(&m)' failed.
> >
> > Anyone seen this before and maybe know of a fix?
>
> That does /not/ sound good at all.
>
> It indicates that for some reason the boost threads library doesn't work
> properly.
>
> There is no way this can be fixed in POV-Ray itself (short of using a
> different multithreading library, which would be a major undertaking),
> and the only thing you as a user can do about it (short of reporting the
> problem to the boost developers and waiting for a fix) is minimizing the
> probability that thread synchronization issues arise.
>
> The most thread synchronization heavy component of POV-Ray is the
> radiosity sample cache. If you're using radiosity and don't want to do
> without, you might want to try UberPOV and its no_cache feature.

I am not using radiosity at all in ArtRays.

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