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This guide shows how to download and install the packaged version of CARLA. The package includes the CARLA server and the Python API client library ready to run out of the box and does not require any build process. There are additional assets that can be downloaded and imported into the package. Advanced customization and development options that require use of the Unreal Engine editor are not available but these can be accessed by using the build version of CARLA for either Windows or Linux.

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  • CARLA installation
  • Running CARLA

Before you begin

The following requirements should be fulfilled before installing CARLA:

  • System requirements. Any 64-bits OS should run CARLA.
  • An adequate GPU. CARLA aims for realistic simulations, so the server needs at least a 6 GB GPU although we would recommend 8 GB. A dedicated GPU is highly recommended for machine learning.
  • Disk space. CARLA will use about 20 GB of space.
  • Python.Python is the main scripting language in CARLA. CARLA supports both Python 2 and Python 3.7.
  • Two TCP ports and good internet connection. 2000 and 2001 by default. Make sure that these ports are not blocked by firewalls or any other applications.
  • Other requirements. Two Python modules: Pygame to create graphics directly with Python, and Numpy for calculus. Install them using:

CARLA installation

There are two methods to download and install CARLA as a package:

A)Download the Debian package.

B)Download the package from GitHub.

A. Debian CARLA installation

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The Debain package is available for both Ubuntu 18.04 and Ubuntu 20.04, however the officially supported platform is Ubuntu 18.04.

1. Set up the Debian repository in the system:

2. Install CARLA and check for the installation in the /opt/ folder:

This repository contains CARLA 0.9.10 and later versions. To install a specific version add the version tag to the installation command:

Important

To install CARLA versions prior to 0.9.10, change to a previous version of the documentation using the panel in the bottom right corner of the window, and follow the old instructions.

B. Package installation

This repository contains different versions of CARLA. You will find options to download the current release with all the most recent fixes and features, previous releases and a nightly build with all the developmental fixes and features (the nightly build is the most unstable version of CARLA).

The package is a compressed file named CARLA_version.number. Download and extract the release file. It contains a precompiled version of the simulator, the Python API module and some scripts to be used as examples.

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Import additional assets

Each release has it's own additional package of extra assets and maps. This additional package includes the maps Town06, Town07, and Town10. These are stored separately to reduce the size of the build, so they can only be imported after the main package has been installed.

1.Download the appropriate package for your desired version of CARLA.

2. Extract the package:

  • On Linux:

    • move the package to the Import folder and run the following script to extract the contents:
  • On Windows:

    • Extract the contents directly in the root folder.

Running CARLA

The method to start a CARLA server depends on the installation method you used and your operating system:

  • Debian installation:
  • Linux package installation:
  • Windows package installation:

A window containing a view over the city will pop up. This is the spectator view. To fly around the city use the mouse and WASD keys, holding down the right mouse button to control the direction.

This is the server simulator which is now running and waiting for a client to connect and interact with the world. You can try some of the example scripts to spawn life into the city and drive a car:

Command-line options

Carla Bruni

There are some configuration options available when launching CARLA and they can be used as follows:

  • -carla-rpc-port=N Listen for client connections at port N. Streaming port is set to N+1 by default.
  • -carla-streaming-port=N Specify the port for sensor data streaming. Use 0 to get a random unused port. The second port will be automatically set to N+1.
  • -quality-level={Low,Epic} Change graphics quality level. Find out more in rendering options.
  • List of Unreal Engine 4 command-line arguments. There are a lot of options provided by Unreal Engine however not all of these are available in CARLA.

The script PythonAPI/util/config.py provides more configuration options and should be run when the server has been started:

Updating CARLA

There is no way to update the packaged version of CARLA. When a new version is released, the repository is updated and you will need to delete the previous version and install the new version.

Carla Morrison

Installation summary

Follow-up

By now you should have a packaged version of CARLA up and running. If you came across any difficulties during the installation process, feel free to post in the CARLA forum or in the Discord channel.

Carla Baratta

The next step is to learn more about the core concepts in CARLA. Read the First steps section to start learning. You can also find all the information about the Python API classes and methods in the Python API reference.





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