Depending on how long you want to sample (and how much system RAM you've got) you can also do something like using tmpfs (i.e. a RAM disk). I've often resorted to this when doing collections lasting a minute or less. At 25MS/s * 32bit/S (I&q...@16bits) * 60s = 5.58GB according to my calculator - so that may or may not be a viable option for you. Doug
On Thu, Sep 17, 2009 at 1:00 AM, Matt Ettus <m...@ettus.com> wrote: > Miklos Christine wrote: >> >> Yes, that is exactly what I'm looking for. However, when running >> usrp2_rx_cfile.py with decimation = 4, I get a 'S' printing to stdout. Is >> anyone else able to run usrp2_rx_cfile.py and not get that overrun message? >> What could be the reason for 'S'? Is it a limitation on how fast we can >> write the samples to the hard disk? >> I want to keep the maximum number of samples possible. > > > At a decimation rate of 4 you are generating 25 MS/s. If those samples are > complex shorts, that works out to 100 MB/s. If those samples are complex > floats, that is 200 MB/s. In the former case, you really need a RAID array > of at least two fast drives to keep up. In the latter, you're going to need > to do something more exotic. > > Matt > -- Doug Geiger doug.gei...@bioradiation.net _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
