Re: Number Cruncher

[dirk@gaga.maschinenbau.uni-dortmund.de (Dirk Froehling)]

In article <3j35lk$em8@manuel.anu.edu.au>, stu@aerodec.anu.edu.au (Stuart
David Midgley) wrote:

> I am seriously considering purchasing number cruncher.  What I want to
know is how much performance I will get?  Take for example running rsrt. 
At the moment it takes around 4hours to do a screen of reasonable
complexity.  If I compile this program using the NC headers, will I get
much more performance?

What is rsrt? A rendering program? If it uses float, you will get A LOT more
performance, if it uses integer, not.

> I also run symbolix, and it seems that I will not get that much more
speed, as I am running an a 10MHz machine.  

You will definitely see a difference, but it depends on what you are doing.
Do you have the version with direct NC support?
 
> Also, how fast does the board run at?  And what speed 68882 chip should I get?

I think, it is 10 MHz, but it may be 8 MHz. Anyway, it runs at the fastest
speed that makes sense because of the slot bottleneck.
So you can buy any 68881 or 882 that runs at least 10 MHz (more doesn't hurt),
it just has to be a ceramic package.

-- 
| Dirk Froehling - Germany, Uni Dortmund, FB Maschinenbau, LS Mechanik |
| dirk@gaga.maschinenbau.uni-dortmund.de            GEnie: D.FROEHLING |