From: Allan Schaffer (allan++at++sgi.com)
Date: 06/24/2003 14:52:03
Hi Juergen,
Juergen Gotschlich wrote:
> we just bought a Dell 2x Intel(R) Xeon(TM) CPU 2.80GHz maschine with
> Nvidia's FX2000.
> Perfly runs in principle, except for some Z-buffering failure, which is
> a potential X-driver problem and will be corrected hopefully by some
> future releases.
Offhand remark - that sounds like we're not choosing a good visual. Use
'glxinfo' to choose one for us yourself; and then feed that into perfly
using the -t option.
> But our own written application ( visual system for flight sim. )
> crashes with segfault or abort, although it is running fine on our ONYX,
> INDIGO and as well on a single proc. Linux PC.
> Both Linux PC's( the single and the dual proc.) are running Suse Linux
> 8.2 and Performer 3.0.1.
>
> My question: What changes have to be done to build an application for a
> dual-proc ? Do you use any specific compiler switches ( optimization,
> memory management, ... ) ?
Usually such problems have to do with data that is not visible from all
the processes which need it; typically static data or something that
needs to be put into shared memory.
Also, remember that the GNU compilers don't initialize variables to
NULL; and that the IRIX compilers allow you to dereference NULL on Onyx
& Octane & Fuel ! (!!)
The debugger and a stack trace will be your best bet.
Allan
-- Allan Schaffer allan++at++sgi.com Engr. Manager, Core Rendering 1-650-933-2160 Silicon Graphics http://www.sgi.com
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