Angus Dorbie (dorbie++at++bitch.reading.sgi.com)
Sat, 17 Feb 1996 16:09:33 +0100
1) With 2 pipes you will use more CPUs to draw & possibly cull so
if you have a heavy cull process (which can be true with mcad DBs)
then you could be host limited with just the 4 CPUs 6 would be a
better option with 2 pipes. If this is 2 pipe R4400 vs 1 pipe R10K
then worry about this, (you don't mention cpu type).
2) As for the # RMs, there won't be much in it if you keep the resolutions
the same so the fact that you have another pipe should give you a big
boost on the geometry side of things along with other advantages like
more video outputs so I expect this is very good for your databases. The
big question then is how you intend to do your stereo. You cannot use both
pipes to render stereo to a single video so with the two pipes you need
some device which will display stereo using two different video signals
for each eye. Depending on your intentions then two pipes may not be what
youre looking for. If you have the stereo from two video signals in hand
then I expect the two pipes will be much better for you if you get the
culling & database right.
For CPU performance youre better off using some other metric
like specfp95 or AIM. Better still try and benchmark your code.
Rgds,
Angus.
On Feb 17, 6:40pm, mdrp++at++swabiman.ernet.in wrote:
> Subject:
> Hi,
> Can some one tell me which of the following is the better solution?
> 1. Infinite Reality with 4 CPUs, 4 RM6s , 1 pipe
> or
> 2. Infinite reality with 4 CPUs, 2 RM6s , 2 Pipes
>
> If I am correct, the price of both the alternatives is same.
> My application needs 25-30 frames/sec performance and sterio view.
> Also the application is more of MCAD nature than Image manipulations.
>
> What is the MFLOP rating of MIPS R4400 and R10000 cpus.
>
> Thanks in advance..
> Prasad
> -------------------------------------------------------------------------------
> M.D.R.Prasad
> E-mail: mdrp++at++ada.ernet.in
> -------------------------------------------------------------------------------
>
>
>-- End of excerpt from mdrp++at++swabiman.ernet.in
-- Angus Dorbie, Silicon Graphics Ltd, UK dorbie++at++reading.sgi.com
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