Ubuntu CE GPU Installation With Tarball

This is an end-to-end recipe for installing MapD Community Edition on an Ubuntu running with NVIDIA Kepler or Pascal series GPU cards. This install has all of the functionality of MapD.

The installation phases are:

Note: The order of these instructions is significant. Please install each component in the order presented to prevent aggravated hair loss.

Assumptions

These instructions assume the following:
  • You are installing on a “clean” Ubuntu host machine with only the operating system installed.
  • Your MapD host only runs the daemons and services required to support MapD.
  • Your MapD host is connected to the Internet.

Preparation

Prepare your Ubuntu machine by updating your system, creating the MapD user, enabling a firewall, and installing CUDA.

Update and Reboot

Update the entire system.

sudo apt update
sudo apt upgrade

Install a “headless” Java Runtime Environment.

sudo apt install default-jre-headless

Reboot to activate the latest kernel.

sudo reboot

Create the MapD User

Create the mapd group and mapd user, who will be the owner of the MapD database. You can create both the group and user with the useradd command and the -U switch.

sudo useradd -U mapd

Enable the Firewall

To use Immerse, you must prepare your host machine to accept HTTP connections. You can configure your firewall for external access.

sudo ufw disable
sudo ufw allow 9092/tcp
sudo ufw allow ssh
sudo ufw enable

For more information, see https://help.ubuntu.com/lts/serverguide/firewall.html.

Install CUDA Drivers

Download the DEB package provided by NVIDIA from the NVIDIA CUDA Zone.

  1. Install the CUDA repository, update local repository cache, and then install the CUDA Toolkit and GPU drivers.

    sudo dpkg --install cuda-repo-ubuntu1604_8.0.44-1_amd64.deb
sudo apt update
sudo apt install cuda-drivers linux-image-extra-virtual

    Where cuda-repo-ubuntu1604_8.0.44-1_amd64.deb is the name of the package provided by NVIDIA.

  2. Reboot.

    sudo reboot

  3. Verify installation of the GPU drivers by running the following command.

    nvidia-smi
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Installation

You install the MapD application itself by expanding a TAR file.

  1. Create your $MAPD_PATH directory. MapD recommends /opt/mapd.

  2. Expand the MapD archive file in the $MAPD_PATH directory with the following command.

    tar -xvf <file_name>.tar.gz

Configuration

These are the steps to prepare your MapD environment.

Set Environment Variables

For convenience, you can update .bashrc with the required environment variables.

  1. Open a terminal window.
  2. Enter cd ~/ to go to your home directory.
  3. Open .bashrc in a text editor. For example,sudo gedit .bashrc.
  4. Edit the .bashrc file. Add the following export commands under “User specific aliases and functions.”

    # User specific aliases and functions
export MAPD_USER=mapd
export MAPD_GROUP=mapd
export MAPD_STORAGE=/var/lib/mapd
export MAPD_PATH=/opt/mapd
  5. Save the .bashrc file.
  6. Open a new terminal window to use your changes.

The $MAPD_STORAGE directory must be dedicated to MapD: do not set it to a directory shared by other packages.

You can also create a configuration file with optional settings. See Configuration.

Initialization

This step initializes the database and prepares systemd commands for MapD.

  1. Run the systemd installer. This script requires sudo access. You might be prompted for a password. Accept the values provided (based on your environment variables) or make changes as needed. The script creates a data directory in $MAPD_STORAGE with the directories mapd_catalogs, mapd_data, and mapd_export. mapd_import and mapd_log directories are created when you insert data the first time. The mapd_log directory is the one of most interest to a MapD administrator.

    cd $MAPD_PATH/systemd
sudo ./install_mapd_systemd.sh

Activation

Start and use MapD.

  1. Start MapD.

    cd $MAPD_PATH
sudo systemctl start mapd_server
sudo systemctl start mapd_web_server

  2. Enable MapD to start when the system reboots.

    sudo systemctl enable mapd_server
sudo systemctl enable mapd_web_server

Checkpoint

To verify that all systems are go, load some sample data, perform a mapdql query, and generate a pointmap using Immerse.

MapD ships with two sample datasets of airline flight information collected in 2008. To install the sample data, run the following command.

cd $MAPD_PATH
./insert_sample_data

When prompted, choose whether to insert dataset 1 (7 million rows) or dataset 2 (10 thousand rows).

Enter dataset number to download, or 'q' to quit:
#     Dataset           Rows    Table Name          File Name
1)    Flights (2008)    7M      flights_2008_7M     flights_2008_7M.tar.gz
2)    Flights (2008)    10k     flights_2008_10k    flights_2008_10k.tar.gz

Connect to MapD Core by entering the following command in a terminal on the host machine (default password is HyperInteractive):

$MAPD_PATH/bin/mapdql
password: ••••••••••••••••

Enter a SQL query such as the following:

mapdql> SELECT origin_city AS "Origin", dest_city AS "Destination", AVG(airtime) AS
"Average Airtime" FROM flights_2008_10k WHERE distance < 175 GROUP BY origin_city,
dest_city;
Origin|Destination|Average Airtime
Austin|Houston|33.055556
Norfolk|Baltimore|36.071429
Ft. Myers|Orlando|28.666667
Orlando|Ft. Myers|32.583333
Houston|Austin|29.611111
Baltimore|Norfolk|31.714286

Connect to Immerse using a web browser connected to your host machine on port 9092. For example, http://mapd.mycompany.com:9092.

Create a new dashboard and a Scatter Plot to verify that backend rendering is working.

  1. Click New Dashboard.
  2. Click Add Chart.
  3. Click SCATTER.
  4. Click Add Data Source.
  5. Choose the flights_2008_10k table as the data source.
  6. Click X Axis +Add Measure.
  7. Choose depdelay.
  8. Click Y Axis +Add Measure.
  9. Choose arrdelay.

The resulting chart shows, unsurprisingly, that there is a correlation between departure delay and arrival delay.

4_firstScatterplot.png