Re: [Discuss-gnuradio] The coming deluge of CPU cycles

[Marcus Leech]

Eric Blossom wrote:

> I see two paths that can get us there:
>
>  (1) dynamic partitioning of the flow graph across processors in
>      SMP/multi-core machines.
>
>  (2) m-blocks dynamically scheduled across processors on SMP/multi-core
>
> Once N-cores gets sufficiently large (8 ?), I think we start moving to
> a thread / block model.
>  
There's also cases where multi-threading within a block might be 
beneficial.  Large FFT filters,
 for example.   There's an "inflection point" where the cost of setting 
up a parallel instance of
 a filter is well-paid-for by computing it in parallel.  But I'm no 
expert on such things.

>  
>
> >   o Is it time to think about moving away from USB for USRP?  Perhaps to
> >      PCI-X 2.0, or PCI-Express?
> >    
>
> Or perhaps Express Card.  That would retain the laptop's portability advantage.
>
>  
Just looked that up.  That's basically PCI-Express and USB2.0 "extruded" 
into the designed-for-laptops
 form factor.  Definitely worth considering.


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