Re: [OFF-TOPIC] Pentium II performance?

[aqy6633@acf5.nyu.edu]

> On 16 Feb 1998, Ben Pfaff wrote:
> 
> > Can you point me to the source code for the benchmark?  I can run it
> > on my PII/233 for comparison if you want.
> 
> and Alex Yukhimets:
> 
> > Same here, only with PII/300.
> 
> You can find the source code here:
> 
>    http://www.efis.ucr.ac.cr/~mmagallo/flops_p.c

Hi.

On my PII/300 with bo installed (gcc 2.7.2.1) compiled 

without -O option gives  
   4.8672e-13        0.2832         49.4379
with -O2
   4.8490e-13        0.2531         55.3142
with -O3
  -5.4193e-13        0.2356         59.4231
  ^
   -- what's that '-' about?

Thanks.

Alex Y.

> 
> This is extracted from the flops program written by Al Burto
> (aburto@nosc.mil). This is just module 1, using 7 sums, 6 mults, 1 div.
> I think I got this from http://www.hensa.ac.uk/parallel/ or netlib.
> 
> Compiling with gcc -O2 gives a bit more than 39 on the PII. Using egcc
> (1.0.1-0.3) with -mpentiumpro gives almost 40.9
> 
> Many thanks in advance.
> 
> 						Marcelo
> 
> 
> 


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