Re: [Discuss-gnuradio] Parallel Processing

[Stephane Fillod]

On Sat, Mar 15, 2003, Alan Gray wrote:
> I've seen an estimate of 5+GHz noised around as the approximate processing 
> power required to process HDTV signals in real time. Now if I had the 
> opportunity to spend a little money on a new system, how worthwhile would 
> it be for me to invest in a box with say, dual 2.4 GHz processors? Will the 
> software make good use of the parallel processors, or will everything be 
> processed on one chip leaving the other pretty much idle?

As of today, GNU Radio is not taking advantage of MP (but will in the future).
However, GNU Radio processing + xine MPEG processing can each one run on
a different processor. So the dual processors will be helpful.

This brings up a question to GNU Radio/pspectra experts.
Talking about real-time, I'm wondering how GNU radio is RT aware.
I'm not talking here about hard-"ish" real-time, which could be easily 
covered with LXRT RTAI, I'm talking about soft real-time as encountered 
in multimedia applications.
For instance, is GNU Radio smart enough to discard sample/buffers 
if they're getting too old?


-- 
Stephane