Re: [Discuss-gnuradio] help : how long usrp can run continously in normal environment.
thanks for the information to everyone... On Fri, Sep 10, 2010 at 5:02 AM, Juha Vierinen jvier...@gmail.com wrote: I've run my beacon satellite receiver and radar data acquisition programs for several days without problems. I have never needed to operate them longer, so I don't know what the limit is. The beacon satellite receiver is written completely in c++. The data acquisition program also has some python in it. My programs don't have a GUI and typically they don't have very many gnuradio blocks. Most of the signal processing is done in external libraries or programs. Sometimes I do see a usrp1 driver error when I unplug a usb hard drive while the usrp is running. This isn't really that problematic. I just avoid doing this when I don't want the system to fail. juha On Thu, Sep 9, 2010 at 15:42, Anil Sharma ph.anilsha...@gmail.com wrote: Hi everyone, I want to test something with usrp running continously under normal environment. Can someone tell me the real data of how long usrp is capable of running continously. Thanks. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] help : how long usrp can run continously in normal environment.
Hi everyone, I want to test something with usrp running continously under normal environment. Can someone tell me the real data of how long usrp is capable of running continously. Thanks. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] help : how long usrp can run continously in normal environment.
On 09/09/2010 11:42 AM, Anil Sharma wrote: Hi everyone, I want to test something with usrp running continously under normal environment. Can someone tell me the real data of how long usrp is capable of running continously. Thanks. ___ D Three years ago, I used to run my USRP1-based radio astronomy software for months at a time with no issue. In the last year or so, I've been unable to maintain those kinds of uptimes with either USRP1 or USRP2, which I ascribe to fundamental changes in Gnu Radio, but I haven't been able to put my finger on exactly which flow-graphs will wedge after a few days, and which ones will keep going and going. I have one flow-graph that uses the USRP2 at low bandwidths (400Ksps or so) that seems to be able to run forever. Another, similar flowgraph, will tend to wedge after a few days. I also have a flow-graph that uses an ALSA source and sink, and it can only run for a few days before wedging. I think the USRP *hardware and drivers* are perfectly capable of running forever, but the current Gnu Radio seems to have issues that I haven't been able to pin-point with long-running applications. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] help : how long usrp can run continously in normal environment.
On 09/09/2010 06:19 PM, Kieran Brownlees wrote: We have seen the same behaviour when trying to run overnight on the USRP1, the flowgraph was just doing FM mod (LFRX in LFTX out) and it had a graphical sink. Have the flowgraphs you used been made in GRC (ie could this be a wx issue?). Kieran I have a mixture of flow-graphs that use GUI bits and ones that don't. Doesn't seem to make any difference. In fact, my longest-running one uses an FFT and Stripchart/scope sink. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] help : how long usrp can run continously in normal environment.
On Fri, Sep 10, 2010 at 10:19:05AM +1200, Kieran Brownlees wrote: We have seen the same behaviour when trying to run overnight on the USRP1, the flowgraph was just doing FM mod (LFRX in LFTX out) and it had a graphical sink. Have the flowgraphs you used been made in GRC (ie could this be a wx issue?). I've recently seen crashes (assert failures) directly related to wx, gtk and opengl. From looking at the stack traces on those, it didn't appear to be our problem. These were not running under GRC. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] help : how long usrp can run continously in normal environment.
On 09/09/2010 10:32 PM, Eric Blossom wrote: Marcus, It would be useful it you could provide a gdb stack trace of all threads when you see the wedged condition. If it's a python program, run gdb against /usr/bin/python and use the gdb attach command to attached to the wedged process. Then issue thread apply all bt to generate the stack traces and send them to me. Eric Will do. Last time I did that, the rather large mass of information on each of the many, many, threads was quite daunting for me to analyse myself. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
