On 11/09/2011 07:07 PM, Marcus D. Leech wrote: > 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. >
My AMD Athlon(tm) II X4 620 Processor does jyst fine with 50Msps FFT plotter. Just sayin :-) > 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. There is a configurable scale factor (see the stream args in the grc block). It defaults to a value that gives you the upper 8. -Josh _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
