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How to Download and Install Cogment

Pre-Requisites

Please install:

  1. Docker and docker-compose
  2. protoc

Install the latest Cogment CLI

  1. cogment CLI releases are available here as executable binaries.
  2. Pick a version, usually the latest one should be the right pick.
  3. At the end of the release notes, click on "Assets" to choose and download the appropriate version for your system.
  4. Rename the file to "cogment", and add it to your PATH environmental variable.

You can follow more specific instructions for your OS in the following.

Linux

The following downloads version COGMENT_CLI_VERSION of the cli to /usr/local/bin, a location already belonging to your PATH in most linux distributions and make sure it is executable.

Simply replace COGMENT_CLI_VERSION with the version you want to download, e.g. v1.0.1.

$ curl -L https://github.com/cogment/cogment-cli/releases/download/COGMENT_CLI_VERSION/cogment-linux-amd64 -o /usr/local/bin/cogment && chmod +x /usr/local/bin/cogment

macOS

At the moment Cogment will only work on x86 intel macs

The following downloads version COGMENT_CLI_VERSION of the cli to /usr/local/bin, a location already belonging to your PATH in macOS and make sure it is executable.

Simply replace COGMENT_CLI_VERSION with the version you want to download, e.g. v1.0.1.

$ curl -L https://github.com/cogment/cogment-cli/releases/download/COGMENT_CLI_VERSION/cogment-macOS-amd64 -o /usr/local/bin/cogment && chmod +x /usr/local/bin/cogment

Windows

  1. Download the windows version of the cogment CLI as described above.
  2. Rename the downloaded file cogment-windows-amd64.exe to cogment.exe.
  3. Copy it to an easy to find location, e.g. c:\\cogment.
  4. Add the c:\\cogment folder to your PATH environmental variable.

Check that Cogment CLI is accessible.

With a working installation you can run the following in a terminal:

$ cogment version

You can then list all the commands by typing:

$ cogment help

or for help on each individual command:

$ cogment help <command>

Test your installation

In order to test that your installation is fully working, run an existing Cogment app, for example one of the steps of the tutorial.

Download or clone the sources for the official Rock-Paper-Scissors (RPS) tutorial from https://github.com/cogment/cogment-tutorial-rps.

Once it is done, run the following in the directory you retrieved:

$ cd 5-human-player
$ cogment run generate
$ cogment run build
$ cogment run start

The first cogment command will run the code generation phase for this project. If everything runs fine it means cogment and Protobuf's protoc are installed correctly.

The second will build docker images for the services of this Cogment app. If everything runs fine it means the docker and docker-compose installations are functional.

Finally, the third command will start the Cogment app. In another terminal you can connect to it and play a few games of RPS against a simple AI agent.

$ cogment run client

Congratulations, you have a working installation of Cogment! We recommend you head to the Cogment tutorial to learn how to implement this RPS app from scratch.