How to run nDisplay by script or command line

Development Programming & Scripting
1

I’m looking for documentation and information on how to run nDisplay from a script, or perhaps even with remote TCP calls. I’ve scoured their docs and the only way I can find in there to run an nDisplay cluster is via the nDisplayLauncher. This is inadequate for our scenario since we’ll be running a project by script that will start every morning at the same time, and will be managed remotely.

Has anyone seen some information around how to do this? I would hope that I could at least do what nDisplayLauncher is doing from a command line, but also would be interested to know if it can be done using remote commands, such as the cluster event protocol.

Thanks!

2

I’ve failed to do the same thing but 4.27’s Switchboard allows us to copy and paste the command and use the batch file?

3

Did you ever find a solution to this? I am currently in the same situation, working on an installation that needs to be automated by script to launch every morning. I have not found a way to do it but it seems that the Switchboard is using UDP or something similar to communicate with the Listeners… I just haven’t found anything about what these messages actually are. Any help would be appreciated

4

Almost exactly a year later and I’m here wondering if anyone ever figured this out. Also working on an installation that needs to auto-launch every morning. I found out that switchboard has a native scripting interface that is completely undocumented but can’t seem to get it working. Using 5.2

5

I’m trying to do the same thing. Did any of you guys figured out a way to do it?

6

If you launch the switchboard launcher and listener and execute the project from there, you can see the command being executed on the listener. You can use that in a .bat to launch the project in “ndisplay mode” or you can add the launch arguments to a shortcut.

Here is an example on how to launch a built project:

“{YOUR_PROJECT_PATH}\Built_project.exe” -game None -messaging -dc_cluster -nosplash -fixedseed -NoVerifyGC -noxrstereo -xrtrackingonly -RemoteControlIsHeadless -StageFriendlyName=“Node_0” -MaxGPUCount=2 -dc_cfg=“{YOUR_PROJECT_PATH}\ndisplay_config.ndisplay” -dx12 -dc_dev_mono -dc_node=Node_0 Log=Node_0.log -ini:Engine:[/Script/Engine.Engine]:GameEngine=/Script/DisplayCluster.DisplayClusterGameEngine,[/Script/Engine.Engine]:GameViewportClientClassName=/Script/DisplayCluster.DisplayClusterViewportClient,[/Script/Engine.UserInterfaceSettings]:bAllowHighDPIInGameMode=True -ini:Game:[/Script/EngineSettings.GeneralProjectSettings]:bUseBorderlessWindow=True -ini:Input:[/Script/Engine.InputSettings]:DefaultPlayerInputClass=/Script/DisplayCluster.DisplayClusterPlayerInput -unattended -NoScreenMessages -handleensurepercent=0 -UDPMESSAGING_TRANSPORT_MULTICAST=“230.0.0.1:6666” -UDPMESSAGING_TRANSPORT_UNICAST=“127.0.0.1:0” -UDPMESSAGING_TRANSPORT_STATIC=“192.168.0.10:9030” -ExecCmds=“DisableAllScreenMessages” -windowed -forceres WinX=2560 WinY=0 ResX=2560 ResY=1440 -CONCERTRETRYAUTOCONNECTONERROR -CONCERTAUTOCONNECT -CONCERTSERVER=“Ventana_Espacial_test_benja_MU_Server” -CONCERTSESSION=“MU_Session” -CONCERTDISPLAYNAME=“Node_0” -CONCERTISHEADLESS -DPCVars=“Slate.bAllowNotifications=0,p.Chaos.Solver.Deterministic=1”

Probably some commands are not needed if you’re using just one machine.

You can also launch a project which is not prebuilt like this:

“C:\Program Files\Epic Games\UE_5.3\Engine\Binaries\Win64\UnrealEditor.exe” “{YOUR_PROJECT_PATH}\{PROJECT_NAME}.uproject” -game None -messaging -dc_cluster -nosplash -fixedseed -NoVerifyGC -noxrstereo -xrtrackingonly -RemoteControlIsHeadless -StageFriendlyName=“Node_0” -MaxGPUCount=2 -dc_cfg=“{YOUR_PROJECT_PATH}\ndisplay_config.ndisplay” -dx12 -dc_dev_mono -dc_node=Node_0 Log=Node_0.log -ini:Engine:[/Script/Engine.Engine]:GameEngine=/Script/DisplayCluster.DisplayClusterGameEngine,[/Script/Engine.Engine]:GameViewportClientClassName=/Script/DisplayCluster.DisplayClusterViewportClient,[/Script/Engine.UserInterfaceSettings]:bAllowHighDPIInGameMode=True -ini:Game:[/Script/EngineSettings.GeneralProjectSettings]:bUseBorderlessWindow=True -ini:Input:[/Script/Engine.InputSettings]:DefaultPlayerInputClass=/Script/DisplayCluster.DisplayClusterPlayerInput -unattended -NoScreenMessages -handleensurepercent=0 -UDPMESSAGING_TRANSPORT_MULTICAST=“230.0.0.1:6666” -UDPMESSAGING_TRANSPORT_UNICAST=“127.0.0.1:0” -UDPMESSAGING_TRANSPORT_STATIC=“192.168.0.10:9030” -ExecCmds=“DisableAllScreenMessages” -windowed -forceres WinX=2560 WinY=0 ResX=2560 ResY=1440 -CONCERTRETRYAUTOCONNECTONERROR -CONCERTAUTOCONNECT -CONCERTSERVER=“Ventana_Espacial_test_benja_MU_Server” -CONCERTSESSION=“MU_Session” -CONCERTDISPLAYNAME=“Node_0” -CONCERTISHEADLESS -DPCVars=“Slate.bAllowNotifications=0,p.Chaos.Solver.Deterministic=1”

You can export an .ndisplay from the corresponding ndisplay configuration asset, inside Unreal.