2018-01-31 17:55:59 +08:00
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Running CARLA without Display and Selecting GPUs
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2018-01-24 22:30:54 +08:00
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This tutorial is designed for:
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- Remote server users that have several nvidia graphical cards and want to effectively use CARLA on all GPUs.
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2018-01-31 17:55:59 +08:00
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- Desktop users who want to use the GPU that is not plugged on the screen for rendering CARLA.
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2018-01-24 22:30:54 +08:00
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On this tutorial you will learn.
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- How to configure your server to have nvidia working on rendering without a display attached.
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- How to use VNC + VGL to simulate a display connected to any GPU you have in your machine.
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- And Finally, how to run CARLA in this environment
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This tutorial was tested in Ubuntu 16.04 and using NVIDIA 384.11 drivers.
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## Preliminaries
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A few things need to be working in your server before.
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Latest NVIDIA Drivers, OpenGL, VirtualGL(VGL), TurboVNC 2.11, ,
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#### NVIDIA Drivers
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Download and install NVIDIA-drivers with typical tutorials
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http://www.nvidia.es/Download/index.aspx
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2018-01-24 22:34:11 +08:00
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#### OpenGL
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2018-01-24 22:30:54 +08:00
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Openg GL is necessary for Virtual GL. Normally OpenGL
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can be installed through apt.
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sudo apt-get install freeglut3-dev mesa-utils
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#### VGL
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2018-02-02 22:19:07 +08:00
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Follow this tutorial and install vgl: <br>
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[Installing VGL](https://virtualgl.org/vgldoc/2_2_1/#hd004001)
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2018-01-24 22:30:54 +08:00
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2018-01-24 22:34:11 +08:00
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#### TurboVNC
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2018-02-02 22:19:07 +08:00
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Follow the tutorial below to install TurboVNC 2.11:<br>
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[Installing TurboVNC](https://cdn.rawgit.com/TurboVNC/turbovnc/2.1.1/doc/index.html#hd005001)
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2018-01-24 22:30:54 +08:00
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WARNING: Take care on which VNC you install as it may not be compatible with Unreal. The one above was the only one that worked for me.
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#### Extra Packages
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These extra packages were necessary to make unreal to work.
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2018-01-29 21:23:28 +08:00
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sudo apt install x11-xserver-utils libxrandr-dev
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2018-01-24 22:30:54 +08:00
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2018-01-24 22:34:11 +08:00
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#### Configure your X
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2018-01-24 22:30:54 +08:00
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You must generate a X compatible with your nvdia and compatible to run without display. For that, the following command worked:
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sudo nvidia-xconfig -a --use-display-device=None --virtual=1280x1024
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## Emulating The Virtual Display
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Start by killing all Xorg servers. This command could change depending on your system.
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sudo service lightdm stop
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2018-01-30 00:45:26 +08:00
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Run your own Xorg. Here I use number 7, but it could be labeled with any free number.
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2018-01-24 22:30:54 +08:00
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sudo nohup Xorg :7 &
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Run an auxiliary remote VNC-Xserver. This will create a
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virtual display "8".
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/opt/TurboVNC/bin/vncserver :8
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If everything is working fine the following command
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should run smoothly.
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DISPLAY=:8 vglrun -d :7.0 glxinfo
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2018-01-30 00:45:26 +08:00
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Note. This will run glxinfo on Xserver 7, device 0. This means you are selecting the GPU 0 on your machine. To run on other GPU, such as GPU 1 run:
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2018-01-24 22:30:54 +08:00
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DISPLAY=:8 vglrun -d :7.1 glxinfo
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2018-02-02 22:02:12 +08:00
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#### Extra
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If you want disable the need of sudo when creating the 'nohup Xorg'
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go to the '/etc/X11/Xwrapper.config' file and change 'allowed_users=console' to 'allowed_users=anybody'
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2018-01-24 22:30:54 +08:00
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## Running CARLA
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2018-01-30 00:45:26 +08:00
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Now, finally, to run CARLA on a certain gpu_number placed in a certain $CARLA_PATH, run.
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2018-01-24 22:30:54 +08:00
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DISPLAY=:8 vglrun -d :7.<gpu_number> $CARLA_PATH/CarlaUE4/Binaries/Linux/CarlaUE4
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