• Make Your Own Cluster Computer (Part 2)


    [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=lHmFRlETTcQ” browser_url=”https://www.youtube.com/watch?v=lHmFRlETTcQ”][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=”1402713028-1-39e9a4-2f88″][vc_column_text]

    65_cluster_comp2_thThis is part two of the series that shows you how to make a cluster computer using Raspberry Pi’s!

    You can watch Part 1 here.

    [/vc_column_text][/vc_tab][vc_tab title=”Parts and Downloads” tab_id=”1402713028-2-39e9a4-2f88″][vc_column_text]

    Acquiring the Parts
    Here’s what you will need:

    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

    [/vc_column_text][/vc_tab][vc_tab title=”Code” tab_id=”1402753910272-3-8″][vc_column_text]

    Installing and Configuring Raspbian

    • Follow the software configuration steps shown in this video and burn the image file to an SD card for each computer in your cluster.
    • For each Raspberry Pi in your cluster, insert an imaged SD card, connect them all to the same router or switch, and then connect a power source to each one.

    [tabby title=”Terminal Commands”]

      • Install nmap
        • Sudo apt-get update
        • Sudo apt-get install nmap
      • Get current IP
        • Ifconfig
      • Scan subnet for Pi’s
        • Sudo nmap -sn 192.168.1.*
      • Run test file
        • Mpiexec -n 1 hostname
      • Make test folder and file
        • Mkdir mpi_test
        • Cd mpi_test
        • Nano machinefile
          • 192.168.1.2
          • 192.168.1.3
          • 192.168.1.4
          • 192.168.1.5
        • Mpiexec -f machinefile -n 4 hostname
      • Add keys to all pi’s
        • PI01
          • Ssh-keygen
          • Cd ~
          • Cd .ssh
          • Cp id_rsa.pub pi01
          • Ssh pi@192.168.1.3
        • PI02
          • Ssh-keygen
          • Cd .ssh
          • Cp id_rsa.pub pi02
          • Scp 192.168.1.2:/home/pi/.ssh/pi01 .
          • Cat pi01 >> authorized_keys
          • Exit
        • PI03 (ssh pi@192.168.1.5)
          • Ssh-keygen
          • Cd .ssh
          • Cp id_rsa.pub pi03
          • Scp 192.168.1.2:/home/pi/.ssh/pi01 .
          • Cat pi01 >> authorized_keys
          • Exit
        • PI04
          • Ssh-keygen
          • Cd .ssh
          • Cp id_rsa.pub pi04
          • Scp 192.168.1.2:/home/pi/.ssh/pi01 .
          • Cat pi01 >> authorized_keys
          • Exit
        • PI01
          • Scp 192.168.1.3:/home/pi/.ssh/pi02
          • Cat pi02 >> authorized_keys
      • Run new machinefile
        • Cd ~
        • Nano machinefile
          • 192.168.1.2
        • Mpiexec -f machinefile -n 4 hostname
      • Run Python file
        • mpiexec -n 5 python demo/helloworld.py
        • Mpiexec -f machinefile -n 5 python /home/pi/build/mpi4py/demo/md5_dict_attack.py
      • Download and unzip file
      • Copy to all computers
        • Scp -r python_test 192.168.1.3:/home/pi
        • Mpiexec -f machinefile -n 5 python python_test/md5_attack.py

    [/vc_column_text][/vc_tab][vc_tab title=”Important Links” tab_id=”1402753981900-3-10″][vc_column_text]

    Help support my channel:

    http://www.patreon.com/tinkernut

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  • Make Your Own Cluster Computer


    [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.

    [/vc_column_text][/vc_tab][vc_tab title=”Parts and Downloads” tab_id=”1402713028-2-39e9a4-2f886e2a-7d43″][vc_column_text]

    Acquiring the Parts
    Here’s what you will need:

    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”]

    [/vc_column_text][/vc_tab][vc_tab title=”Code” tab_id=”1402753910272-3-86e2a-7d43″][vc_column_text]

    Installing and Configuring Raspbian

    • Download the Raspbian Image from here.
    • Burn the Raspbian Image to your SD Card
    • 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:

    [/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]

  • Create A Social Media Zombie


    Just because you’re dead doesn’t mean your Social Networking life has to be!. Use these tools to continue to post even if you’re a ghost.

    Websites:
    http://ifidie.net/
    http://liveson.org/
    http://www.deadsoci.al/
    https://www.lifenaut.com/

  • Make Your Own Private Interwebz!


    Stay secure on public wireless networks by making your own FREE virtual private network (VPN). This tutorial shows you how to set up an OpenVPN server and connect to it from your laptop.

    Links used in this video:
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    http://tinkernut.com/wiki/page/Episode_328

  • Beginners Guide to Google Plus





    Find out how to use Google Plus, Google’s new social networking service. This will guide you through ins and outs of how to get started.

  • Best social networking apps





    This video covers four different types of social networking applications:

    Tweetdeck – http://www.tweetdeck.com

    Hootsuite – http://hootsuite.com/

    Wasabi (by Netvibes) – http://wasabi.netvibes.com/

    Ping.fm – http://www.ping.fm

  • How To Create Facebook Widgets


    This video will show you how to create Facebook Widgets using Microsoft’s Popfly application. This will require a Facebook account and a Windows Live account.