Just did a quick test of 8-bit samples on a USRP2, on one of my 6-core
AMD machines.
I can get to 33Msps with a fairly simple SOURCE-->MULT-->FFT_SINK
flow-graph, but anything more complicated causes overruns.
If I try 50Msps, I get near-continuous overruns.
This is on an AMD Phenom II X6-1055 -- the cores run at 2.8GHz, and I
have 4GB of 1333MHz memory.
It's a fairly-wimpy machine as multi-core DSP monsters go, but I thought
I'd give it a try.
People should be aware that since this uses the upper-half (as far as I
know) of the ADC, you'll need more gain to drive those
8 bits.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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