Re: [Discuss-gnuradio] Performance monitoring within Gnuradio

Hi Vipin - To get performance counters, you have to rebuild GNU Radio and enable them specifically via the cmake command addition "-DENABLE_PERFORMANCE_COUNTERS=ON". Make sure to review the output of the cmake command to verify that they have been enabled, then once you're satisfied do the usual

Re: [Discuss-gnuradio] Is USRP mandatory for gnu radio for cognitive radio

Hello M S Sumi, The GNU Radio tutorials are a great place to gain an understanding of doing digital signal processing without hardware connected and then the later tutorial covers the use of hardware to see actual RF signals. https://wiki.gnuradio.org/index.php/Guided_Tutorials Regards, Derek

Re: [Discuss-gnuradio] Is USRP mandatory for gnu radio for cognitive radio

Thanks, I'll check it out. On 30-Oct-2017 16:36, "Derek Kozel" wrote: > Hello M S Sumi, > > The GNU Radio tutorials are a great place to gain an understanding of > doing digital signal processing without hardware connected and then the > later tutorial covers the use of

[Discuss-gnuradio] Best Way to revert to old releases with PyBombs.

Hi all, I think the question is all in the subject, but basically, I'm having trouble with using several USRPs. I think it may be an issue with UHD, or at least I need to verify it isn't. Does pybombs have a command to install older releases or specific branch tags from git? Thanks, Rich

Re: [Discuss-gnuradio] Performance monitoring within Gnuradio

Thanks for the tip! I will try htop first and then rebuild if necessary. On Mon, Oct 30, 2017 at 5:29 AM Michael Dickens wrote: > Hi Vipin - To get performance counters, you have to rebuild GNU Radio > and enable them specifically via the cmake command addition >

Re: [Discuss-gnuradio] Performance monitoring within Gnuradio

There is also the Linux tool `perf`. I use that instead of the GNU Radio tools due to library compatibility issues (also thrift is a pita to get working with GNU Radio in my experience). An example is: `perf top -p --call-graph=fp` (use sudo if needed). If you want to see everything you can

Re: [Discuss-gnuradio] [USRP-users] Dynamically Sweep Center Frequency for USRP2

You can look at usrp_spectrum_sense script. This sweeps a specified frequency range, does an FFT, and outputs one line for every bin where the magnitude exceeds a specified limit. You could modify it to just write the samples to a file/pipe like uhd_rx_cfile. --Patrick

Re: [Discuss-gnuradio] Fwd: Random test failures when compiling GNURadio from source

I’ve noticed the same on our buildbot setup (and wanted to address this for a while). `qa_packet_format` is another candidate which seems to randomly fail. Also compiling on buildbot seems to fail sometimes randomly because of `M_SQRT2` or `M_LOG2E` undeclared errors. So, Kevin, without having a

Re: [Discuss-gnuradio] AirSpy Mini won't install

> Generating: '/maint/scripts/top_block.py' > > Executing: > /opt/local/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python > -u /maint/scripts/top_block.py > > Mac OS; Clang version 8.1.0 (clang-802.0.42); Boost_105900; >

Re: [Discuss-gnuradio] Best Way to revert to old releases with PyBombs.

You can even specify a git revision, by doing something like $ pybombs -p config --package uhd gitrev release_003_009_006 Then, if you do pybombs rebuild (without the -k), it'll update your git source. (At least it should -- typing this out from memory). -- M On 10/30/2017 03:34 PM, Nicolas

[Discuss-gnuradio] AirSpy Mini won't install

What have I missed ? sudo port install gnuradio sudo port install airspy sudo port install rtl-sdr sudo port install gr-osmosdr sudo port install gqrx sudo port install gqrx-devel sudo port install libusb sudo port install libusb-devel sudo port install hackrf sudo port install hackrf-devel

[Discuss-gnuradio] Fwd: Random test failures when compiling GNURadio from source

Hello, We have been trying to compile and run GNURadio from source and the make tests have been failing randomly. *Machine Details* *Intel NUC (x86-64 machine)* *Ubuntu 16.04.03* *GNU Radio version 3.7.11* *gcc version 5.4.0 20160609 * *Commands used* *git clone --recursive

Re: [Discuss-gnuradio] Best Way to revert to old releases with PyBombs.

Hello Richard, I believe the best way (so far) would be to actually go to the repository that you want to rebuild and checkout to the different specific branch/tag and then trigger the rebuild with $ pybombs -p *your_prefix* rebuild *uhd* You can rebuild faster by adding the '-k' flag at