Re: [Discuss-gnuradio] ANCI-C vs Gnuradio/C++ speeeed

[Achilleas Anastasopoulos]

Bob,

let me be 100% sure of what you are saying:

the comparison you are referring to was between
Phil Karn's native code in ANSI-C
and
Phil Karn's native code ported in Gnuradio ?

Thanks
Achilleas

Robert W McGwier wrote:
> Yes.  I was comparing Phil Karn's native code to it and it runs at least 
> 20 times faster.
>
> Bob
>
>
>
> Achilleas Anastasopoulos wrote:
>
> > I have noticed a huge speed dissadvantage when comparing my
> > ANSI-C implementation of a Viterbi decoder with my Gnuradio 
> > implementation. The core code is pretty much the same, except
> > that in the Gnuradio implementation I am using STL vectors.
> >
> > It seems that Gnuradio is about 20 times SLOWER than ANSI-C!!!
> > I was wondering if this has to do with Gnuradio itself (buffering +
> > python + other fat), or with the fact that I had to translate all
> > my ANCI-C code to C++ and use STL.
> >
> > Does anyone have similar experiences?
> >
> > Achilleas
> >
> >
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > address@hidden
> > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

--
_______________________________________________________
Achilleas Anastasopoulos                        
Associate Professor
EECS Department               Voice : (734)615-4024
UNIVERSITY OF MICHIGAN        Fax   : (734)763-8041
Ann Arbor, MI 48109-2122      E-mail: address@hidden
URL: http://www-personal.engin.umich.edu/~anastas/      
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