[hpsdr] ATOM based micro board
Rob Frohne
rob.frohne at wallawalla.edu
Fri Feb 6 09:14:52 PST 2009
Hi Everyone,
Frank's comments below prompt me to ask, what we could gain by
investigating how to overcome this straw problem? Would a Mercury like
card plugged into a PCI slot allow us to speed things up significantly?
Or does it need to be a PCI-Express slot? What can be gained opening up
the bottleneck of USB or firewire? Are there applications that would
benefit from this, or is the "straw" between the computer and our brains
such that fixing the USB/Firewire straw doesn't buy us much? Should we
be thinking of HPSDR 2?
73,
Rob, KL7NA
Frank Brickle wrote:
>
>
> On Fri, Feb 6, 2009 at 10:52 AM, mrzfrn <mrzfrn at gmail.com
> <mailto:mrzfrn at gmail.com>> wrote:
>
>
> .. somebody says you can get
> factor 10 improving , even much more on other chips same class,
> on FFT and the like, easy way...
>
>
> The limitation right now is not on processor cycles that can be thrown
> at DSP computations. The bottleneck is in getting data in and out of
> the processor from the rest of the world. A 10X FFT speedup doesn't
> change much of anything in the DttSP universe, as long as we're
> sucking our samples through a USB2 or FireWire straw.
>
> 73
> Frank
> AB2KT
>
> --
> When small birds sighed, she would sigh back at them. -- Theodore Roethke
> __._,_.___
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> __,_._,___
--
Rob Frohne, Ph.D., P.E.
E.F. Cross School of Engineering
Walla Walla University
100 SW 4th Street
College Place, WA 99324
(509) 527-2075 http://people.wallawalla.edu/~Rob.Frohne/
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