"Craig Lindley" <cal### [at] gmailcom> wrote:
> 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.

I've updated the boost library to 1.50 and I'll see if that fixes things.

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