Tinkernut Labs

[vc_row][vc_column width=”2/3″][vc_separator][venera_framed_image content_type=”video” css_animation=”appear” frame_type=”browser” slider_engine=”flexslider” video_link=”https://www.youtube.com/watch?v=1R0UgIgcb5g” browser_url=”https://www.youtube.com/watch?v=1R0UgIgcb5g”][vc_separator][/vc_column][vc_column width=”1/3″][/vc_column][/vc_row][vc_row][vc_column width=”2/3″][vc_tabs][vc_tab title=”About This Project” tab_id=”1402713028-1-39e9a4-2f886e2a-7d43″][vc_column_text]

Learn how to make a cluster computer using Raspberry Pi’s! You can also use this method to build your own super computer.

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1. 2 or more Raspberry Pi’s
2. SD cards for each Pi
3. Power Cables for each Pi
4. Powered USB Hub (optional)
5. Networking Cables
6. A Hub or a Router

TOTAL COST: ~$100.00 [tabby title=”Software”]

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• Download the Raspbian Image from here.
• Burn the Raspbian Image to your SD Card
  • If you have Windows, you can follow these instructions.
  • If you have a Mac, you can follow these instructions.
• Once the image is burned to your SD Card, but it into the Raspberry Pi and boot it up with a Keyboard, Mouse, Monitor and Internet attached.
• Upon first boot, you should see the Rasbperry Pi Configuration screen (otherwise type “sudo raspbi-config“. Here’s the options we’ll need to configure
  • Expand the File System
  • If needed, set the Internationalization options to match your countries keyboard layout.
  • Overlcock the Pi to 800 Mhz
  • Advanced Options
    • Set the Hostname to Pi01
    • Split the memory to 16mb for graphics
    • Enable SSH
  • Finish out of the configuration, but don’t reboot yet
  • To enable auto-login, at the terminal command type “sudo nano /etc/inittab”
    • Comment out this line: #1:2345:respawn:/sbin/getty --noclear 38400 tty1
    • And add this line right beneath it: 1:2345:respawn:/bin/login -f pi tty1 </dev/tty1 >/dev/tty1 2>&1
  • Now you can reboot your Pi and it should auto-login

[tabby title=”Terminal Commands”]

Installing MPICH

• MPICH is software that allows for multi-processing communication between computers.
• To install it on your Raspberry Pi, first make sure you have a valid Internet connection going to the Pi. Then follow these Terminal Commands

  • sudo apt-get update

  • mkdir mpich2

  • cd ~/mpich2

  • wget http://www.mpich.org/static/downloads/3.1/mpich-3.1.tar.gz

  • tar xfz mpich-3.1.tar.gz

  • sudo mkdir /home/rpimpi/

  • sudo mkdir /home/rpimpi/mpi-install

  • mkdir /home/pi/mpi-build

  • cd /home/pi/mpi-build

  • sudo apt-get install gfortran

  • sudo /home/pi/mpich2/mpich-3.1/configure -prefix=/home/rpimpi/mpi-install

  • sudo make

  • sudo make install

  • nano .bashrc

    • PATH=$PATH:/home/rpimpi/mpi-install/bin

  • sudo reboot

  • mpiexec -n 1 hostname

• These commands will download and install MPICH, as well as add it as a path to your BASHRC boot file. The last command runs a test to see if it works. If the last command returns “Pi01”, then you did everything successfully.

Installing MPI4PY

• As it is, MPICH can run C and Fortran programs. But since the Raspberry Pi has the Python coding environment pre-installed, it would be easiest to install a Python to MPI interpreter. Here’s the commands to do that:

  •  sudo aptitude install python-dev

  • wget https://mpi4py.googlecode.com/files/mpi4py-1.3.1.tar.gz

  • tar -zxf mpi4py-1.3.1

  • cd mpi4py-1.3.1

  • python setup.py build

  • python setup.py install

  • export PYTHONPATH=/home/pi/mpi4py-1.3.1

  • mpiexec -n 5 python demo/helloworld.py

[/vc_column_text][/vc_tab][vc_tab title=”Important Links” tab_id=”1402753981900-3-106e2a-7d43″][vc_column_text] Help support my channel: http://www.patreon.com/tinkernut Follow Tinkernut! Google + Facebook Twitter [/vc_column_text][/vc_tab][/vc_tabs][/vc_column][vc_column width=”1/3″][/vc_column][/vc_row]