Hi LJ, I don't see an audio sink in either of those flowgraphs, are those the ones causing the error? Is there supposed to be a soundcard involved at any point in your setup? To just capture, record, and replay the file sink seems correct (to the limits of your hard drive write/read speeds).
Does sending and receiving to/from the USRP work if you use null sink and constant source to receive/produce data? Derek On Wed, May 2, 2018 at 3:08 PM, Eads, LJ D. <lje...@mitre.org> wrote: > Derek and Marcus, > > > > Thank you for the quick response! This is my first entry to the mailing > list. > > > > So I am trying to capture a very fast frequency hopping signal.. the rate > is proprietary but probably one of the fastest rates on the market right > now. I am currently just implementing a basic record/replay. I believe you > are right that I am trying to route too much data to my speakers and that’s > what I am trying to get out of. > > > > I currently have had better success with the X310 right now using the > GNURadio Live Environment on a USB and running Cat 5E from the X310 to my > laptop.. now I’m trying to implement what I had on my laptop on this server > that I setup. I attached the server specs.. currently using ubuntu 16.04. > > > > Marcus.. I am confused as well! Because I feel like I should be using my > CPUs and I am not. > > > > LJ Eads > > > > *From:* Derek Kozel [mailto:derek.ko...@ettus.com] > *Sent:* Wednesday, May 2, 2018 9:43 AM > *To:* Müller, Marcus (CEL) <muel...@kit.edu> > *Cc:* discuss-gnuradio@gnu.org; Eads, LJ D. <lje...@mitre.org> > *Subject:* Re: [Discuss-gnuradio] How do I interface my X310 with an > NVIDIA K80 GPU in GNURadio > > > > Hello LJ, > > It would help to know what type of signal processing you are hoping to do > and how you want to display or save the data. On generally available > consumer hardware GNU Radio has been shown to be able to handle 800+MS/s of > samples being displayed in spectrum plots. > > It sounds like you are trying to route too much data to your speakers. Are > you able to share your flowgraph? There is a screenshot function in the > menu or the grc file could be attached. > > Regards, > > Derek > > > > > > On Wed, May 2, 2018 at 2:28 PM, Müller, Marcus (CEL) <muel...@kit.edu> > wrote: > > Hi LJ Eads, > > I'm a bit confused: What has your sound card to do with GNU Radio, or > the USRP? And how is your sound card comparable to a GPU? > > GNU Radio runs on CPUs. > > Best regards, > Marcus > > > On Wed, 2018-05-02 at 13:23 +0000, Eads, LJ D. wrote: > > Hello, > > I just setup a USRP X310 that I plan on using with GNURadio over 10 > gigabit.. I have everything working and functioning properly (drivers and > all) but my only concern right now is that GNURadio is running off of the > sound card on my server and not the GPU. GNURadio isn’t able to handle > practically anything because I am limited by the sound card capability. > > How would I be able to use the CPU (Sixteen-Core Intel Xeon Processor > E5-2683 v4 2.10GHz 40MB Cache (120W)) or the GPU (NVIDIA Tesla K80 GPU > Computing Accelerator - 24GB GDDR5 - Passive Cooler) for better > functionality of the X310? > > > > My current error: “gr::log : INFO: audio_alsa_sink0 – [default]: unable > to support sample rate 500000 > > Card requested 192000 instead” > > https://lists.gnu.org/archive/html/discuss-gnuradio/2014-06/ > msg00418.html - This sounds like my issue > > > > Thank you, > > LJ Eads > > > > > > L J Eads > > The MITRE Corporation > > (937) 874-7240 (Office) > > (954) 554-6801 (Mobile) > > lje...@mitre.org (FFRDC) > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > >
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