> Well, thats actually a good question.

	It is important to run a 64-bit POV-Ray on your 64-bit machine/OS.
Otherwise you won't be able to get full use of the large installed RAM.

I see only one linux version available
> (povlinux-3.6.tgz). That's what I'm using.  I'm not able to find anywhere
> online here if thats 32 bit or 64 bit.

	The distribution you are referring to provides a 32-bit POV-Ray binary
that is meant to run on all x86 platforms (at least Pentium-compatible).  As of
today there's no official 64-bit POV-Ray for Linux binary.
	However you have two possibilities:

1) get the source distro of POV-Ray for Unix and "configure && make install"
2) get the 64-bit PC-Linux distribution of MegaPOV

> Although, I would imagine if only one version is available, it would
> probably be 32bit.  So is that the issue?

	This might well be the issue, indeed.  Another one is that there is
some weirdness about memory allocation under Linux in general.  Although
POV-Ray for Linux, as WinPOV, always checks whether it can allocate memory
or not, it seems there is no chance for the software to report when it
cannot allocate memory under Linux: it just gets killed by the OS instead.
I've been experiencing such an odd behaviour for quite some time with other
applications as well, so I believe this is not a problem specific to POV
for Linux.  Yet this will be investigated.

But again, if that limits memory
> to 2 or 3 GB, 500 MB file shouldnt be a problem, no?

	You are confusing two completely different things: the scene file size
has in general nothing to do with how much memory POV-Ray will need to allocate
for it.  For instance you can have a small scene file that generates billions
of objects by using loop constructs.

> (ps,  anyone when 3.7 will be available for linux?

	There will be none.  Linux is Evil.  (WARNING: joke inside)

	- NC

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