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Swarm Agent Stuck on Lighting Build

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    Swarm Agent Stuck on Lighting Build

    Hi guys, long time lurker first time posting!

    We're having a problem with building the lighting in our level since 4.25. It seems to get stuck when computing the light from the Sun&Sky. We have tried removing the saved data and letting unreal rebuild the folder, reducing light emission and bounce settings, turning off shadows on large amounts of objects and so on. The overdraw and lighting complexity maps are all green, there is a single light source from the sun&sky. The landscape is pretty large but nothing compared to a modern game. Even with all these changes were not getting beyond 0.00% in 4-5 hours of light building so something must be broken. The full log created by SwarmAgent is below:

    12:13:33 PM: Starting up SwarmAgent ...
    12:13:33 PM: ... registering SwarmAgent with remoting service
    12:13:33 PM: ... registering SwarmAgent network channels
    12:13:33 PM: ... initializing SwarmAgent
    12:13:33 PM: ......... certificate check has failed
    12:13:33 PM: ...... initializing cache
    12:13:33 PM: ......... using cache folder 'C:/Users/*****/AppData/Local/UnrealEngine/4.25/Saved/Swarm\SwarmCache'
    12:13:33 PM: ......... recreating SwarmAgent cache staging area
    12:13:33 PM: ...... initializing connection to SwarmCoordinator
    12:13:33 PM: ......... using SwarmCoordinator on RENDER-01
    12:13:33 PM: ......... SwarmCoordinator successfully initialized
    12:13:33 PM: ...... initializing local performance monitoring subsystem
    12:13:39 PM: ... initialization successful, SwarmAgent now running
    12:13:41 PM: [Interface:TryOpenConnection] Local connection established
    12:13:42 PM: [Job] Accepted Job 0740F0F7-4E58B1C9-9A4848BA-EF4A8FF5
    12:14:01 PM: [Job] Launched Job UnrealLightmass_2020-07-14_02-06-22_1126656-64bit.exe
    12:14:01 PM: [Job] PID is 23728
    12:14:01 PM: [Job] GUID is "0740F0F7-4E58B1C9-9A4848BA-EF4A8FF5"
    12:14:01 PM: LogLightmass: Display: Lightmass Win64 started on: HANNA. Command-line: 0740F0F74E58B1C99A4848BAEF4A8FF5
    12:14:01 PM: Failed to determine engine directory: Defaulting to ../../../Engine/
    12:14:01 PM: Failed to load 'aqProf.dll' (GetLastError=126)
    12:14:01 PM: File 'aqProf.dll' does not exist
    12:14:01 PM: Failed to load 'VtuneApi.dll' (GetLastError=126)
    12:14:01 PM: File 'VtuneApi.dll' does not exist
    12:14:01 PM: Failed to load 'VtuneApi32e.dll' (GetLastError=126)
    12:14:01 PM: File 'VtuneApi32e.dll' does not exist
    12:14:01 PM: Lightmass Win64 started on: HANNA. Command-line: 0740F0F74E58B1C99A4848BAEF4A8FF5
    12:14:01 PM: LogLightmass: Display: Processing scene GUID: 0740F0F74E58B1C99A4848BAEF4A8FF5 with 6 threads
    12:14:01 PM: Processing scene GUID: 0740F0F74E58B1C99A4848BAEF4A8FF5 with 6 threads
    12:14:01 PM: Building static lighting...
    12:14:01 PM: [OpenConnection] Registering TCP channel ...
    12:14:01 PM: [OpenConnection] Connecting to agent ...
    12:14:01 PM: [TryOpenConnection] Testing the Agent
    12:14:01 PM: [TryOpenConnection] Opening Connection to Agent
    12:14:01 PM: [TryOpenConnection] Local Process ID is 23728
    12:14:01 PM: [Job] Found a parent connection for PID 23728
    12:14:01 PM: [Job] 5F342960 -> 1F3F4A01
    12:14:01 PM: [Interface:TryOpenConnection] Local connection established
    12:14:38 PM: Measured CPU frequency: 4.01 GHz
    12:14:38 PM: FStaticLightingSystem started using GKDOPMaxTrisPerLeaf: 4
    12:14:38 PM: Number of texture mappings: 46594
    12:14:38 PM: Number of fluid mappings: 0
    12:14:38 PM: Number of landscape mappings: 256
    12:14:38 PM: Number of BSP mappings: 0
    12:14:38 PM: Number of static mesh instance mappings: 46594
    12:14:45 PM: Scene surface area calculated at 715252.438 million units (17.065% of the estimated 4191233.750 million units)
    12:14:45 PM: Importance volume surface area calculated at 5217.159 million units (40.485% of the estimated 12886.660 million units)
    12:14:45 PM: Clamped the number of indirect photon paths to 20000.
    12:14:49 PM: Embree Build 3.9s
    12:14:49 PM:
    12:14:49 PM:
    12:14:49 PM: Collision Mesh Overview:
    12:14:49 PM: Num Triangles : 28314802
    12:14:49 PM: MeshInfos : 3.9Mb
    12:14:49 PM: UVs : 238.0Mb
    12:14:49 PM: LightmapUVs : 238.0Mb
    12:14:49 PM: Embree Used Memory : 2022.8Mb
    12:14:49 PM:
    12:14:49 PM:
    12:14:49 PM: Processing...
    12:14:50 PM: EmitDirectPhotons complete, 1.128 million photons emitted in 0.4 seconds
    12:14:53 PM: Built photon segment map in 0.1 seconds
    12:14:53 PM: EmitIndirectPhotons complete, 3.130 million photons emitted in 1.8 seconds
    12:14:53 PM: Marking Irradiance Photons complete, 0.250 million photons marked in 0.1 seconds
    12:23:01 PM: Caching Irradiance Photons complete, 1069.308 million cache samples in 487.8 seconds
    12:23:07 PM: Calculate Irradiance Photons complete, 0.203 million irradiance calculations in 6.0 seconds
    2:43:43 PM: [CloseConnection] Closing connection 5F342960 using handle 5F342960
    2:43:44 PM: [CloseConnection] Connection confirmed for disconnection 5F342960
    2:43:44 PM: [CloseConnection] Closing orphaned Job (0740F0F7-4E58B1C9-9A4848BA-EF4A8FF5)
    2:43:44 PM: [Job] Job has failed! Job is closed while Tasks are still PENDING
    2:43:44 PM: [CloseConnection] Orphaning local connection (5F342960 is the parent of 1F3F4A01)
    2:43:44 PM: [CloseConnection] Connection disconnected 5F342960
    2:43:44 PM: [GetMessage] Safely returning to 5F342960 with no message
    2:43:45 PM: [MaintainConnections] Local connection has closed (5F342960)
    2:43:45 PM: [MaintainConnections] Removed connection 5F342960
    2:43:45 PM: [Maintain Jobs] Killing rogue Job "0740F0F7-4E58B1C9-9A4848BA-EF4A8FF5"
    2:43:48 PM: [MaintainConnections] Detected dropped local connection, cleaning up (1F3F4A01)
    2:43:48 PM: [CloseConnection] Closing connection 1F3F4A01 using handle 1F3F4A01
    2:43:48 PM: [CloseConnection] Connection confirmed for disconnection 1F3F4A01
    2:43:48 PM: [CloseConnection] Connection disconnected 1F3F4A01
    2:43:48 PM: [GetMessage] Safely returning to 1F3F4A01 with no message
    2:43:51 PM: [MaintainConnections] Local connection has closed (1F3F4A01)
    2:43:51 PM: [MaintainConnections] Removed connection 1F3F4A01
    2:43:51 PM: [MaintainConnections] All connections have closed

    Please help. We plan on adding many more objects to this open world and cant have build times like this.
    Last edited by Dbjelica; 08-06-2020, 05:36 PM. Reason: Called Sun & Sky the wrong thing.
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