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

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 <w6rz@comcast.net> 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,
>> _______________________________________________
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