Re: [Discuss-gnuradio] [VOLK][announcement] VOLK release impeding

[Ron Economos]

If you use a swap file, it won't crash. However, there may be a more 
optimum number of cores to use rather than all four.

Ron

On 7/31/19 14:44, Glen Langston wrote:
> Hi Ron,
>
> Thanks for the suggestion.  My experience is that the -j4
> works for a while on a Raspberry PI 3B+,  but eventually
> runs out of memory on some files and the whole PI crashes.
>
> -j4 might work on a 4 GB PI 4 though.
>
> Best regards,
>
> Glen
>
> On Wed, Jul 31, 2019 at 5:30 PM Ron Economos <address@hidden> wrote:
> > You can reduce build time significantly by using all the cores in your
> > CPU. This is done by using the -j parameter with the make command. Set
> > the parameter to the number of available cores. For the Pi 3B+, the CPU
> > has four cores, so:
> >
> > make -j4
> >
> > Ron
> >
> > On 7/31/19 10:28, Barry Duggan wrote:
> > > Hi Glen,
> > >
> > > With the help of many of our friends here, I was able to build 3.8
> > > from scratch on a Pi 3B+. Here are my notes from that effort:
> > >
> > > Build gnuradio on Raspberry Pi 3B+
> > >
> > > Author: Barry Duggan
> > > 31 July 2019
> > >
> > > OS: Raspbian Buster with desktop and recommended software
> > > 32GB microSD
> > >
> > > A. Load prerequisites
> > >
> > > sudo apt-get update --allow-releaseinfo-change
> > > sudo apt-get upgrade
> > > sudo apt-get install git cmake g++ libboost-all-dev libgmp-dev swig
> > > python3-numpy
> > > sudo apt-get install python3-mako python3-sphinx python3-lxml doxygen
> > > libfftw3-dev
> > > sudo apt-get install libsdl1.2-dev libgsl-dev libqwt-qt5-dev
> > > libqt5opengl5-dev python3-pyqt5
> > > sudo apt-get install liblog4cpp5-dev libzmq3-dev python3-yaml
> > > sudo apt-get install libpthread-stubs0-dev
> > > sudo pip3 install click-plugins
> > >
> > > D. Set up swap file
> > >
> > > sudo fallocate -l 2G /swapfile
> > > sudo chmod 600 /swapfile
> > > sudo mkswap /swapfile
> > > sudo swapon /swapfile
> > >
> > > -   To make this permanent, add this line to /etc/fstab
> > > /swapfile  none  swap  sw  0  0
> > >
> > > C. Clone repository
> > >
> > > cd
> > > git clone --recursive https://github.com/gnuradio/gnuradio.git
> > >
> > > D. Build
> > >
> > > cd ~/gnuradio
> > > mkdir build
> > > cd build
> > > (this next command is all on one line, starting with cmake and ending
> > > with ../)
> > > cmake -DENABLE_GR_UHD=OFF -DCMAKE_INSTALL_PREFIX="/usr/local"
> > > -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../
> > > make
> > > sudo make install
> > > sudo ldconfig
> > >
> > > Of course, if you want UHD, leave out the "-DENABLE_GR_UHD=OFF".
> > >
> > > It took about eight hours total.
> > >
> > > Good luck! Let me know how it went.
> > >
> > > Best wishes,
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio