I finally got around to trying writing to RAM, and the result is worse - my replay FFT is static.
I am trying to record a chunk of spectrum (in this case the shortwave chunk, 0-30MHz) and then go back and look at small pieces to find my specific data. If someone can provide insight into how to do this, I would appreciate it. Thank you all for all the assistance to date. Paul B. Huter On Nov 25, 2013 9:38 AM, "West, Nathan" <n...@ostatemail.okstate.edu> wrote: > I agree with Nick: that VOLK stuff is all expected behavior. If you're > trying to write to a file at high rates you should look in to using a > ramdisk/tmpfs. You'll be limited by how much RAM you have rather than > IO speed. > > However, based on your other threads I wonder if you've taken Tom's > recent suggestion to just lower your input sampling rate? If you're > only interested in ~1MHz bandwidth you shouldn't be sampling at 50 > MHz. > > -nathan > > On Mon, Nov 25, 2013 at 12:08 AM, Nick Foster <bistrom...@gmail.com> > wrote: > > Your file sink only records a few seconds of data because your hard drive > > can't keep up, not because of any problem with Volk. The Volk machine > being > > used does not indicate which particular architecture is used for each > kernel > > -- that isn't printed at runtime. > > > > --n > > > > On Nov 24, 2013 9:58 PM, "Paul B. Huter" <paul.b.hu...@gmail.com> wrote: > >> > >> When running with a USRP source at 25M and a low pass filter down to > >> 10MHz, I get something saying "Using Volk machine: sse4_a_64", and my > file > >> sink only records a couple seconds of data. I ran the volk_profile > script, > >> but still get the same result. The script returned something other than > >> "sse4_a_64" as the best volk to use. My GNU Radio seems to have trouble > >> reading configuration files, so is there a way to manually point to the > volk > >> parameter to use when I load GNU Radio? > >> > >> Paul B. Huter > >> >
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