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Votes
0
Found in
2020.3.35f1
2021.3.5f1
2022.1.5f1
2022.2.0a17
2023.1.0a1
Issue ID
UUM-1365
Regression
No
GPU hang or exceedingly long wait when Baking Lights
Reproduction steps:
1. Open the attached project
2. Open Window -> Rendering > Lighting
3. Click Generate Lighting
Expected result: The Lighting is baked in a reasonable amount of time
Actual result: Baking the Lighting takes exceedingly long and sometimes crashes
Reproducible with: 2020.1.17f1, 2020.2.0f1, 2021.1.0a10
Could not test with: 2018.4, 2019.4 (Compiler errors, assets cannot be loaded)
Notes:
The issue might not reproduce steadily
Tested with URP 8.3.1, 10.1.0, 10.2.2
Baking process seems to behave recursively, reaching a 40 sec ETA, moving to finalize after the 40 sec, then resetting back to 40 sec ETA, and repeating for about 2 hours.
Reproduces on both Mac and Windows
Reproducible with CPU and GPU PLM
From the log:
GPU hang occurred, CoreAnalytics returned false
Obtained 19 stack frames.
Thread 0x700007976000 may have been prematurely finalized
#0 0x007fff2030d462 in __pthread_kill
Thread 0x700007976000 may have been prematurely finalized
#1 0x007fff2028e720 in abort
Thread 0x700007976000 may have been prematurely finalized
#2 0x007fff461310a8 in gpumInitializeIOData.cold.1
Thread 0x700007976000 may have been prematurely finalized
#3 0x007fff4612820d in gpumCreateComputeContext
Thread 0x700007976000 may have been prematurely finalized
#4 0x000001653328fa in gpusKillClientExt
Thread 0x700007976000 may have been prematurely finalized
#5 0x007fff46128bac in gpusQueueSubmitDataBuffers
Thread 0x700007976000 may have been prematurely finalized
#6 0x00000165302ab2 in glrAMDCompSubmitPackets
Thread 0x700007976000 may have been prematurely finalized
#7 0x0000016530299a in glrAMDFlush
Thread 0x700007976000 may have been prematurely finalized
#8 0x00000165354306 in glrAMDExecuteKernel
Thread 0x700007976000 may have been prematurely finalized
#9 0x00000165356fbf in gldExecuteKernel
Thread 0x700007976000 may have been prematurely finalized
#10 0x007fff6ca46428 in clFlush
Thread 0x700007976000 may have been prematurely finalized
#11 0x007fff6ca5e227 in clSetEventCallback
Thread 0x700007976000 may have been prematurely finalized
#12 0x007fff6ca60110 in clCreateCommandQueueWithPropertiesAPPLE
Thread 0x700007976000 may have been prematurely finalized
#13 0x007fff201907c7 in _dispatch_client_callout
Thread 0x700007976000 may have been prematurely finalized
#14 0x007fff201965fe in _dispatch_lane_serial_drain
Thread 0x700007976000 may have been prematurely finalized
#15 0x007fff201970cb in _dispatch_lane_invoke
Thread 0x700007976000 may have been prematurely finalized
#16 0x007fff201a0c5d in _dispatch_workloop_worker_thread
Thread 0x700007976000 may have been prematurely finalized
#17 0x007fff20338499 in _pthread_wqthread
Thread 0x700007976000 may have been prematurely finalized
#18 0x007fff20337467 in start_wqthread
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Resolution Note:
The project has a probe sample multiplier of 100 and uses 2K indirect samples. So roughly 230000 samples per probe. It has 10 bounces and 150+ baked lights. So the bake is relatively complex in nature.
With LightBaker in 2023.1:
The project bakes in 20 min on CPU Lightmapper with LightBaker (with a reasonably stable eta).
The project bakes in 1 min on GPU Lightmapper (RTX 2080) with LightBaker (with a reasonably stable eta).
This is to be expected, given the complexity of the bake.