Is it possible to run UE4 and CARLA in AWS virtual machine?

[zhiranyan-edmrc]

Hello,

I am using AWS p2.xlarge (Ubuntu 18.04) and want to install UE4 in the instance in order to run CARLA.

But I cannot run the UE4. I installed it according to this tutorial (https://carla.readthedocs.io/en/latest/build_linux/).
Always get the error: cannot find a compatible vulkan driver or device.

So is it possible torun UE4 and CARLA in AWS virtual machine?

Could anyone give me some tipps? Thank you very much!

[qhaas]

The client is CPU only, but the server (i.e. the part that needs UnrealEngine) needs a GPU capable of running OpenGL or Vulkan attached to the VM, doubt CPU only OpenGL will be usable. I have not ran it on AWS, where GPUs appear to be an option, but have ran it on my organization's internal cloud which is backed by openstack.

Typically, you are not running an x-server on a cloud VM, so you will be limited to headless with no x-server opengl runs. vulkan doesn't support x-server-less headless without an upgrade to UE 4.25. You can use OpenGL headless without an x-server out-of-the-box, but there are artifacts in certain weather conditions.

To use headless opengl, take a look at their docker example, we start it like SDL_VIDEODRIVER=offscreen CarlaUE4.sh -opengl

[zhiranyan-edmrc]

The client is CPU only, but the server (i.e. the part that needs UnrealEngine) needs a GPU capable of running OpenGL or Vulkan attached to the VM, doubt CPU only OpenGL will be usable. I have not ran it on AWS, where GPUs appear to be an option, but have ran it on my organization's internal cloud which is backed by openstack.

Typically, you are not running an x-server on a cloud VM, so you will be limited to headless with no x-server opengl runs. vulkan doesn't support x-server-less headless without an upgrade to UE 4.25. You can use OpenGL headless without an x-server out-of-the-box, but there are artifacts in certain weather conditions.

To use headless opengl, take a look at their docker example, we start it like SDL_VIDEODRIVER=offscreen CarlaUE4.sh -opengl

Hi qhaas, thanks for your reply. I could give you more information about me. Now, I am running with a GPU-capable AWS virtual machine (e.g. p2.xlarge, GPU is NVIDIA Tesla K80). I try to open UE4.24 but I get the error "Cannot find a compatible Vulkan device or driver. Try updating your video card to a more recent version and make sure your video card supports Vulkan." that is the same like this issue (https://answers.unrealengine.com/questions/883700/ubuntu-1804-cannot-find-a-compatible-vulkan-device.html). Ihave tried to method it mentioned. But I still coundn't open UE4.

So, I start to consider if it is a issue about NVIDIA driver. I typed "nvidia-smi" and get the correct information. However, when I go to "system settings->details->about", it shows "graphics: llvmpipe (LLVM10.0.0, 256 bits)" which means that NVIDIA driver is not being used. But I am sure I selected NVIDIA driver, because I can train my neutral network with this virtual machine with GPU.

I have tried your suggestion to open UE4 with the command "cd ~/UnrealEngine_4.24/Engine/Binaries/Linux && SDL_VIDEODRIVER=offscreen ./UE4Editor -opengl ". But it does not work for me.

[qhaas]

My above snippet was for running CARLA (not the UnrealEditor) from the command-line without a GUI.

If you want to use UnrealEditor with a GUI via x-forwarding or VNC (or any other 3D accelerated software where the rendering is done remotely), you cannot use vulkan and will need virtualgl.

Try to get remote rendering with OpenGL and a display working with something simpler than UnrealEditor first, like glxgears, which is included in some distros' repositories. If glxgears won't work, UnrealEditor won't either.

[cleemesser]

I just tried it, and UnrealEngine5 (early access, built from source on linux) no longer supports OpenGL but instead requires vulkan :-(

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.