[Discuss-gnuradio] 50Msps performance

[Marcus D. Leech]

I thought I'd try a simple 50Msps flow-graph with the latest Gnu Radio 
to see how well it now works.

I've attached it.  As you can see, it doesn't do very much.  A UHD 
source, a single multiply, then a null sink.

On a 6-core machine running at 3.2GHz, it gets overruns, nearly 
continuously.  This isn't noticeably different from prior to the
  latest performance changes in Gnu Radio, except that the overruns 
happen at perhaps a somewhat lower rate. A single
  data point in a very complicated space, but I think processing very 
high sample rates in Gnu Radio is going to be tough.
  Although I know that the CASPER folks have done this in the past, as 
have the GMRT folks in India.  But they don't
  use Gnu Radio, but rather highly-customized stuff that doesn't 
necessarily do much processing on the samples.

This was on a AMD Phenom II X6 1090T.  Not the highest performance 
machine on the planet, but not the worst, either.

--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

fiddyMhz.grc
Description: application/gnuradio-grc