Hi,
I would add using virtual machine.
You can use simple linux distribution like Knoppix, it has virtual box on
it.
Checkout also qemu.
Regards,
Kfir
On Thu, Mar 25, 2010 at 7:07 PM, Christopher Sean Morrison (Cont, ARL/SLAD)
<[email protected]> wrote:
>
> Andrew,
>
> Sounds like the old GSI models...
>
> Those old geometry database files are "v4" format, which can only be read
> on
> the platform type that generated them. That is to say that the files are
> not "portable" -- they can't be just moved from system to system.
> dbupgrade
> can't even read them properly because of that incompatibility. That was
> one
> of the reasons why "v5" format was created.
>
> dbupgrade has to be run on the same platform type that generated the g
> file.
> I'm guessing that they were probably made on an old SGI system, so
> dbupgrade
> would ideally be run on an SGI before moving them to another system. If
> that got your blood pressure up, it's not quite as bleak as it sounds.
> There are several alternative platforms that are compatible as well.
>
> If you have access to an old PowerPC Mac, you can probably do the upgrade
> there. Similarly, IBM Power4 and Power5 AIX systems should work as should
> Solaris SPARC systems. You need a "big-endian"/non-Intel/non-AMD machine.
>
> We have development requests to try and make dbupgrade handle unknown
> format(s), but it's not nearly as simple as that sounds and it's generally
> been easy enough to find a big endian "somewhere" to do the conversion.
> So,
> it's not been tasked to anyone just yet. Feel free to make some noise
> towards ARL's way if this is high priority.
>
> Cheers!
> Sean
>
>
> On 3/25/10 12:31 PM, "lundbergaj" <[email protected]> wrote:
>
> >
> > I'm trying to use some old but very detailed BRLCAD models, and get
> numerous
> > errors using dbupgrade on the .g files. These are detailed models I got
> from
> > the developers years ago for vehicles such as the t72m1 tank, the 2s1,
> the
> > 2s3, bmp2, bmpa, brdm2, btr50, btr60, btr80, humvee, m1a1, m60a2, zil157,
> > and the zsu23-4. I'd like to use these models with the new versions of
> > brlcad if I could, but significant changes were made 10 years ago that
> made
> > these incompatible with brlcad 5+, and it seems these particular
> databases
> > are not automatically handled by dbupgrade.
> >
> > Has anyone else experienced this problem, and is there a solution?
> >
> > I get many errors of the form:
> >
> > ERROR: rwl628b.r/rwl628.s.cuta improper scaling, rotation matrix elements
> >
> > 1
> >
> > as well as:
> >
> > rt_ars_rd_curve(): non-ARS_B record!
> >
> > The t72m1.g file, for instance, also balloons from 3.9meg to 295meg.
> >
> > Andrew Lundberg
>
>
>
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