Re: [Discuss-gnuradio] Segmentation fault

[Ben Loftin]

I'm using an Athlon XP 2400. Just wondering if it would matter if I 
built fftw with  --enable-3dnow,  below was taken from fftw faq.  Which 
brings me to 2nd question.  Is there some standard benchmarking code 
someone has or on cvs?


   Question 2.5. What's the difference between |--enable-3dnow| and
   |--enable-k7|?

|--enable-k7| enables 3DNow! instructions on K7 processors (AMD Athlon 
and its variants). K7 support is provided by assembly routines generated 
by a special purpose compiler.

|--enable-3dnow| enables generic 3DNow! support using |gcc| builtin 
functions. This works on earlier AMD processors, but it is not as fast 
as our special assembly routines.


Ben

Eric Blossom wrote:

> On Sun, Apr 03, 2005 at 11:44:21PM -0700, Sachi wrote:
>  
>
> > Hi, Eric
> >
> > Toby's suggestion helped me solve the problem. If I
> > configure "without" the --enable-sse option, then
> > everything works well. Is --enable-sse option
> > necessary here?
> >    
>
> It's only necessary if you want it to go fast...
> [For most current uses within GNU Radio it won't matter]
>
> If you're on an Athlon, use --enable-3dnow instead.
>
>  
>
> > Thanks to you guys
> >
> > Sachi
> >    
>
> Eric
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>