[Bug Report] Crash when using GPU as compute device

[J-64]

Please describe the differences between the expected and observed results:

Expected:

• OpenCL kernel compiling succeeds within the indicated 15-30 minutes and the scene begins rendering.

Observed:

• When using Vulkan, RAM usage exploded after a few minutes, then Blender crashed a while later.
• When using OpenGL, same as with Vulkan only it took less time, and the whole computer froze for a moment.

Steps to reproduce:

• Start Blender
• Enable BlendLuxCore add-on
• Set render engine to LuxCoreRender
• Set compute device to GPU (CPU doesn't crash)
• Render image

Please provide a simple test scene as a .blend-file:

• It happens with the default startup scene (camera, light, default cube)

Screenshots or rendered images:

Error message from Blender console:

• Vulkan: "'bgl' imported without an OpenGL backend. Please update your add-ons to use the gpu module." (appears when enabling BlendLuxCore in add-on menu)
• OpenGL: No error message.

Operating System: Windows 11 Pro 24H2
Blender version: 4.5.2
BlendLuxCore version: 2.10.1
Pyluxcore version: 2.10.1
CPU model: i7-13700KF
GPU model: NVIDIA GeForce RTX 4070 Ti (driver 581.08)

[CodeFHD]

I tried to reproduce the RAM issue but this doesn't happen on both my Linux and Windows machine.

My gut feeling says this must be a machine-specific thing because otherwise there should be more reports.

Two things you might check:

1. You have an nvidia GPU but are using OCL backend. Does this happen with the CUDA backend?
2. Driver-specific issues have been known before. Perhaps you can re-test when there is an update available?

The error bgl imported without... when using Vulkan is due to API deprectation, didn't pop up before the addition of Vulkan as you noticed.

[J-64]

Thanks for the suggestions. It works again after switching to CUDA in the add-on settings.

[Acrivec]

I have same issue on AMD platform. Mine reached 212 GB memory and crashed.
Ryzen 7900, 64GB DDR5 6000 RAM, Radeon XTX 7900 25.11.1, Win 11 25H2

Code block collapsed, click to show

C:\Program Files\Blender Foundation\Blender 4.5>.\blender.exe
[BLC] skipping pyluxcore installation. Specified version already installed.
BlendLuxCore 2.10.1 registered (with pyluxcore 2.10.1)
Updating device list
Writing userprefs: "C:\Users\Acrivec\AppData\Roaming\Blender Foundation\Blender\4.5\config\userpref.blend" ok
Info: Preferences saved
==================================================
[Engine/Final] Rendering layer "ViewLayer"
[Exporter] Creating session
[SDL][52.125] Define ImageMap: NamedObject

[SDL][52.125] Camera type: perspective

[SDL][52.125] Camera position: Point[7.35889, -6.92579, 4.95831]

[SDL][52.125] Camera target: Point[6.70733, -6.31162, 4.51304]

[SDL][52.125] Camera clipping plane disabled

WARNING: Material "Material": Missing node tree
[SDL][52.125] Material definition: Material2080573168032

[SDL][52.125] Scene objects count: 1

[SDL][52.125] Light definition: 2080557968160

[SDL][52.125] Light definition: __WORLD_BACKGROUND_LIGHT__

[LuxCore][52.141] Configuration:

[LuxCore][52.141]   path.pathdepth.total = 13

[LuxCore][52.141]   path.pathdepth.diffuse = 5

[LuxCore][52.141]   path.pathdepth.glossy = 5

[LuxCore][52.141]   path.pathdepth.specular = 12

[LuxCore][52.141]   path.hybridbackforward.enable = 0

[LuxCore][52.141]   path.hybridbackforward.partition = 0

[LuxCore][52.141]   path.hybridbackforward.glossinessthreshold = 0.049

[LuxCore][52.141]   opencl.cpu.use = 0

[LuxCore][52.141]   opencl.gpu.use = 1

[LuxCore][52.141]   opencl.devices.select = "110"

[LuxCore][52.141]   film.noiseestimation.warmup = 8

[LuxCore][52.141]   film.noiseestimation.step = 32

[LuxCore][52.141]   sampler.sobol.adaptive.strength = 0.9

[LuxCore][52.141]   sampler.sobol.bucketsize = 16

[LuxCore][52.141]   sampler.sobol.tilesize = 16

[LuxCore][52.141]   sampler.sobol.supersampling = 1

[LuxCore][52.141]   sampler.sobol.overlapping = 1

[LuxCore][52.141]   renderengine.type = "PATHOCL"

[LuxCore][52.141]   sampler.type = "SOBOL"

[LuxCore][52.141]   film.width = 1920

[LuxCore][52.141]   film.height = 1080

[LuxCore][52.141]   film.filter.type = "NONE"

[LuxCore][52.141]   film.filter.width = 1.5

[LuxCore][52.141]   lightstrategy.type = "LOG_POWER"

[LuxCore][52.141]   scene.epsilon.min = 1e-05

[LuxCore][52.141]   scene.epsilon.max = 0.1

[LuxCore][52.141]   path.albedospecular.type = "REFLECT_TRANSMIT"

[LuxCore][52.141]   path.albedospecular.glossinessthreshold = 0.05

[LuxCore][52.141]   film.opencl.enable = 1

[LuxCore][52.141]   film.opencl.device = 1

[LuxCore][52.141]   path.forceblackbackground.enable = 0

[LuxCore][52.141]   renderengine.seed = 1

[LuxCore][52.141]   film.outputs.0.type = "RGB_IMAGEPIPELINE"

[LuxCore][52.141]   film.outputs.0.index = 0

[LuxCore][52.141]   film.outputs.0.filename = "RGB_IMAGEPIPELINE_0.png"

[LuxCore][52.141]   film.outputs.1.type = "RGB_IMAGEPIPELINE"

[LuxCore][52.141]   film.outputs.1.index = 1

[LuxCore][52.141]   film.outputs.1.filename = "RGB_IMAGEPIPELINE_1.png"

[LuxCore][52.141]   film.imagepipelines.001.0.type = "NOP"

[LuxCore][52.141]   film.imagepipelines.001.1.type = "TONEMAP_LINEAR"

[LuxCore][52.141]   film.imagepipelines.001.1.scale = 1

[LuxCore][52.141]   film.imagepipelines.001.radiancescales.0.enabled = 1

[LuxCore][52.141]   film.imagepipelines.001.radiancescales.0.globalscale = 1

[LuxCore][52.141]   film.imagepipelines.001.radiancescales.0.rgbscale = 1 1 1

[LuxCore][52.141]   film.imagepipelines.001.2.type = "GAMMA_CORRECTION"

[LuxCore][52.141]   film.imagepipelines.001.2.value = 2.2

[LuxCore][52.141]   film.noiseestimation.index = 1

[LuxCore][52.141]   film.imagepipelines.000.0.type = "NOP"

[LuxCore][52.141]   film.imagepipelines.000.1.type = "TONEMAP_LINEAR"

[LuxCore][52.141]   film.imagepipelines.000.1.scale = 1

[LuxCore][52.141]   film.imagepipelines.000.radiancescales.0.enabled = 1

[LuxCore][52.141]   film.imagepipelines.000.radiancescales.0.globalscale = 1

[LuxCore][52.141]   film.imagepipelines.000.radiancescales.0.rgbscale = 1 1 1

[LuxCore][52.141]   batch.haltspp = 0 0

[LuxCore][52.141]   batch.halttime = 0

[LuxCore][52.141] File Name Resolver Configuration:

Export took 0.0 s
====================================================================

Step: 0/2

Creating kernel cache entry with configuration properties:

renderengine.type = "PATHOCL"
sampler.type = "SOBOL"
scene.epsilon.min = 1e-05
scene.epsilon.max = 0.1
opencl.devices.select = "110"


And scene properties:



[SDL][52.141] Define ImageMap: NamedObject

[SDL][52.141] Define ImageMap: image.png

[SDL][52.141] Camera type: perspective

[SDL][52.141] Camera position: Point[1, 6, 3]

[SDL][52.141] Camera target: Point[0, 0, 0.5]

[SDL][52.141] Camera clipping plane disabled

[SDL][52.141] Light definition: infinite_light

[SDL][52.141] Material definition: matte_mat

[SDL][52.141] Scene objects count: 1

[SDL][52.141] Texture definition: constfloat3_tex

[SDL][52.141] Material definition: constfloat3_tmat

[SDL][52.141] Scene objects count: 1

[LuxCore][52.141] Configuration:

[LuxCore][52.141]   renderengine.type = "PATHOCL"

[LuxCore][52.141]   sampler.type = "SOBOL"

[LuxCore][52.141]   scene.epsilon.min = 1e-05

[LuxCore][52.141]   scene.epsilon.max = 0.1

[LuxCore][52.141]   opencl.devices.select = "110"

[LuxCore][52.141]   film.outputs.1.type = "RGB_IMAGEPIPELINE"

[LuxCore][52.141]   film.outputs.1.filename = "image.png"

[LuxCore][52.141] File Name Resolver Configuration:

[LuxCore][52.141] Film resolution: 640x640

[SDL][52.141] Film output definition: RGB_IMAGEPIPELINE [image.png]

[SDL][52.141] Film output definition: RGB_IMAGEPIPELINE [image.png]

[LuxRays][52.141] OpenCL support: enabled

[LuxRays][52.141] OpenCL Platform 0: AMD Accelerated Parallel Processing

[LuxRays][52.141] OpenCL Platform 1: OpenCLOn12

[LuxRays][52.141] CUDA support: enabled

[LuxRays][52.141] Device 0 name: Native

[LuxRays][52.141] Device 0 type: NATIVE_THREAD

[LuxRays][52.141] Device 0 compute units: 1

[LuxRays][52.141] Device 0 preferred float vector width: 4

[LuxRays][52.141] Device 0 max allocable memory: 17592186044415MBytes

[LuxRays][52.141] Device 0 max allocable memory block size: 17592186044415MBytes

[LuxRays][52.141] Device 0 has out of core memory support: 0

[LuxRays][52.141] Device 1 name: gfx1100

[LuxRays][52.141] Device 1 type: OPENCL_GPU

[LuxRays][52.141] Device 1 compute units: 48

[LuxRays][52.141] Device 1 preferred float vector width: 1

[LuxRays][52.157] Device 1 max allocable memory: 24560MBytes

[LuxRays][52.157] Device 1 max allocable memory block size: 20876MBytes

[LuxRays][52.157] Device 1 has out of core memory support: 0

[LuxRays][52.157] Device 2 name: AMD Radeon RX 7900 XTX

[LuxRays][52.157] Device 2 type: OPENCL_GPU

[LuxRays][52.157] Device 2 compute units: 1

[LuxRays][52.157] Device 2 preferred float vector width: 4

[LuxRays][52.157] Device 2 max allocable memory: 24560MBytes

[LuxRays][52.157] Device 2 max allocable memory block size: 1024MBytes

[LuxRays][52.157] Device 2 has out of core memory support: 0

[LuxRays][52.157] Device 3 name: Microsoft Basic Render Driver

[LuxRays][52.157] Device 3 type: OPENCL_CPU

[LuxRays][52.157] Device 3 compute units: 1

[LuxRays][52.157] Device 3 preferred float vector width: 4

[LuxRays][52.157] Device 3 max allocable memory: 32299MBytes

[LuxRays][52.157] Device 3 max allocable memory block size: 1024MBytes

[LuxRays][52.157] Device 3 has out of core memory support: 0

[LuxRays][52.157] Creating 26 intersection device(s)

[LuxRays][52.157] Allocating intersection device 0: gfx1100 (Type = OPENCL_GPU)

[LuxRays][52.157] Allocating intersection device 1: AMD Radeon RX 7900 XTX (Type = OPENCL_GPU)

[LuxRays][52.235] Allocating intersection device 2: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 3: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 4: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 5: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 6: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 7: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 8: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 9: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 10: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 11: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 12: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 13: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 14: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 15: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 16: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 17: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 18: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 19: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 20: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 21: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 22: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 23: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 24: Native (Type = NATIVE_THREAD)

[LuxRays][52.235] Allocating intersection device 25: Native (Type = NATIVE_THREAD)

[LuxCore][52.235] CUDA devices used:

[LuxCore][52.235] OpenCL devices used:

[LuxCore][52.235] [gfx1100 OpenCLIntersect]

[LuxCore][52.235]   Device OpenCL version: OpenCL 2.0 AMD-APP (3652.0)

[LuxCore][52.235] [AMD Radeon RX 7900 XTX OpenCLIntersect]

[LuxCore][52.235]   Device OpenCL version: OpenCL 3.0 D3D12 Implementation

[LuxCore][52.235] Native devices used: 24

[LuxCore][52.235] Configuring 2 OpenCL render threads

[LuxCore][52.235] Configuring 24 native render threads

[LuxRays][52.235] Preprocessing DataSet

[LuxRays][52.235] Total vertex count: 48

[LuxRays][52.235] Total triangle count: 24

[LuxRays][52.235] Preprocessing DataSet done

[LuxRays][52.235] Adding DataSet accelerator: BVH

[LuxRays][52.235] Total vertex count: 48

[LuxRays][52.235] Total triangle count: 24

[LuxRays][52.235] BVH Dataset preprocessing time: 0ms

[LuxRays][52.235] BVH builder: EMBREE_BINNED_SAH

[LuxRays][52.235] BVH build hierarchy time: 0ms

[LuxRays][52.235] BVH total build time: 0ms

[LuxRays][52.235] Total BVH memory usage: 1Kbytes

[LuxRays][52.235] Adding DataSet accelerator: EMBREE

[LuxRays][52.235] Total vertex count: 48

[LuxRays][52.235] Total triangle count: 24

[LuxRays][52.235] EmbreeAccel build time: 0ms

[LuxRays][52.688] [Device gfx1100 OpenCLIntersect] BVH mesh vertices buffer size: 576bytes

[LuxRays][52.688] [Device gfx1100 OpenCLIntersect] BVH nodes buffer size: 1248bytes

[LuxRays][52.688] [BVHKernel] Compiler options: -D LUXRAYS_OPENCL_KERNEL -D PARAM_RAY_EPSILON_MIN=1e-05f -D PARAM_RAY_EPSILON_MAX=0.1f -D LUXRAYS_OPENCL_DEVICE -D LUXRAYS_OS_WINDOWS -cl-fast-relaxed-math -cl-mad-enable

[LuxRays][52.688] [BVHKernel] Compiling kernels

[LuxRays][52.703] [BVHKernel] Program cached

[LuxRays][52.703] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] BVH mesh vertices buffer size: 576bytes

[LuxRays][52.703] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] BVH nodes buffer size: 1248bytes

[LuxRays][52.703] [BVHKernel] Compiler options: -D LUXRAYS_OPENCL_KERNEL -D PARAM_RAY_EPSILON_MIN=1e-05f -D PARAM_RAY_EPSILON_MAX=0.1f -D LUXRAYS_OPENCL_DEVICE -D LUXRAYS_OS_WINDOWS -cl-fast-relaxed-math -cl-mad-enable

[LuxRays][52.703] [BVHKernel] Compiling kernels

[LuxRays][53.203] [BVHKernel] Program cached

[LuxCore][53.203] [PathOCLRenderEngine] OpenCL task count: 524288

[LuxCore][53.203] [PathOCLBaseRenderEngine] OpenCL max. page memory size: 1048576Kbytes

[LuxCore][53.203] Compile Geometry

[LuxCore][53.203] Scene geometry compilation time: 0ms

[LuxCore][53.203] Compile 2 Textures

[LuxCore][53.203] Texture evaluation ops count: 6

[LuxCore][53.203] Texture evaluation max. stack size: 3

[LuxCore][53.203] Textures compilation time: 0ms

[LuxCore][53.203] Compile 2 Materials

[LuxCore][53.203] Material evaluation ops count: 14

[LuxCore][53.203] Material evaluation max. stack size: 8

[LuxCore][53.203] Material compilation time: 0ms

[LuxCore][53.203] Compile Lights

[LuxCore][53.203] Lights compilation time: 0ms

[LuxCore][53.203] Compile ImageMaps

[LuxCore][53.203] Image maps page(s) count: 1

[LuxCore][53.203]  RGB channel page 0 size: 3264Kbytes

[LuxCore][53.203] Image maps compilation time: 0ms

[LuxCore][53.203] Always enabled OpenCL code:

[LuxCore][53.203] Compile Geometry

[LuxCore][53.203] Scene geometry compilation time: 0ms

[LuxCore][53.203] Compile 2 Textures

[LuxCore][53.203] Texture evaluation ops count: 6

[LuxCore][53.203] Texture evaluation max. stack size: 3

[LuxCore][53.203] Textures compilation time: 0ms

[LuxCore][53.203] Compile 2 Materials

[LuxCore][53.203] Material evaluation ops count: 14

[LuxCore][53.203] Material evaluation max. stack size: 8

[LuxCore][53.203] Material compilation time: 0ms

[LuxCore][53.203] Compile Lights

[LuxCore][53.203] Lights compilation time: 0ms

[LuxCore][53.203] Compile ImageMaps

[LuxCore][53.203] Image maps page(s) count: 1

[LuxCore][53.203]  RGB channel page 0 size: 3264Kbytes

[LuxCore][53.203] Image maps compilation time: 0ms

[LuxCore][53.203] Starting 2 OpenCL render threads

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] RADIANCE_PER_PIXEL_NORMALIZEDs[0] buffer size: 6400Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] NOISE buffer size: 1600Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] RADIANCE_PER_PIXEL_NORMALIZEDs[0] buffer size: 6400Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Camera buffer size: 5492bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Triangle normals buffer size: 288bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Vertices buffer size: 576bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Triangles buffer size: 288bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Mesh description buffer size: 624bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] ImageMap descriptions buffer size: 80bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] ImageMaps buffer size: 3264Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Textures buffer size: 656bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Texture evaluation ops buffer size: 48bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Texture evaluation stacks buffer size: 6144Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Materials buffer size: 456bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Material evaluation ops buffer size: 168bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Material evaluation stacks buffer size: 16384Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Scene objects buffer size: 48bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Lights buffer size: 344bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Env. light indices buffer size: 4bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Light offsets (Part I) buffer size: 8bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Env. light distributions buffer size: 516Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] LightsDistribution buffer size: 16bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] InfiniteLightSourcesDistribution buffer size: 16bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] Ray buffer size: 24576Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] RayHit buffer size: 10240Kbytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] GPUTaskConfiguration buffer size: 336bytes

[LuxRays][53.219] [Device gfx1100 OpenCLIntersect] GPUTask buffer size: 339968Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] GPUTaskDirectLight buffer size: 30720Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] GPUTaskState buffer size: 200704Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] GPUTask Stats buffer size: 2048Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] SamplerSharedData buffer size: 1608Kbytes

[LuxCore][53.235] [PathOCLBaseRenderThread::0] Size of a Sample: 40bytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] Sample buffer size: 20480Kbytes

[LuxCore][53.235] [PathOCLBaseRenderThread::0] Size of a SampleData: 8bytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] SampleData buffer size: 4096Kbytes

[LuxCore][53.235] [PathOCLBaseRenderThread::0] Size of a SampleResult: 428bytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] SampleResult buffer size: 219136Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] PathInfo buffer size: 55296Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] DirectLightVolumeInfo buffer size: 22528Kbytes

[LuxRays][53.235] [Device gfx1100 OpenCLIntersect] Pixel Filter Distribution buffer size: 33Kbytes

[LuxCore][53.235] [PathOCLBaseRenderThread::0] Compiling kernels

[LuxRays][53.235] [PathOCL kernel] Compiler options: -D LUXRAYS_OPENCL_KERNEL -D SLG_OPENCL_KERNEL -D RENDER_ENGINE_PATHOCL -D PARAM_RAY_EPSILON_MIN=1e-05f -D PARAM_RAY_EPSILON_MAX=0.1f -D LUXCORE_AMD_OPENCL -D LUXRAYS_OPENCL_DEVICE -D LUXRAYS_OS_WINDOWS -cl-fast-relaxed-math -cl-mad-enable

[LuxRays][53.235] [PathOCL kernel] Compiling kernels

[LuxRays][53.250] [PathOCL kernel] Program cached

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling Film_Clear Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling InitSeed Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling Init Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_RT_NEXT_VERTEX Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_HIT_NOTHING Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_HIT_OBJECT Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_RT_DL Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_DL_ILLUMINATE Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_DL_SAMPLE_BSDF Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_GENERATE_NEXT_VERTEX_RAY Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_SPLAT_SAMPLE Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_NEXT_SAMPLE Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Compiling AdvancePaths_MK_GENERATE_CAMERA_RAY Kernel

[LuxCore][53.250] [PathOCLBaseRenderThread::0] AdvancePaths_MK_* workgroup size: 32

[LuxCore][53.250] [PathOCLBaseRenderThread::0] Kernels compilation time: 15ms

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] RADIANCE_PER_PIXEL_NORMALIZEDs[0] buffer size: 6400Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] NOISE buffer size: 1600Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] RADIANCE_PER_PIXEL_NORMALIZEDs[0] buffer size: 6400Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Camera buffer size: 5492bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Triangle normals buffer size: 288bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Vertices buffer size: 576bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Triangles buffer size: 288bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Mesh description buffer size: 624bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] ImageMap descriptions buffer size: 80bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] ImageMaps buffer size: 3264Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Textures buffer size: 656bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Texture evaluation ops buffer size: 48bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Texture evaluation stacks buffer size: 6144Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Materials buffer size: 456bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Material evaluation ops buffer size: 168bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Material evaluation stacks buffer size: 16384Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Scene objects buffer size: 48bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Lights buffer size: 344bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Env. light indices buffer size: 4bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Light offsets (Part I) buffer size: 8bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Env. light distributions buffer size: 516Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] LightsDistribution buffer size: 16bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] InfiniteLightSourcesDistribution buffer size: 16bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Ray buffer size: 24576Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] RayHit buffer size: 10240Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] GPUTaskConfiguration buffer size: 336bytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] GPUTask buffer size: 339968Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] GPUTaskDirectLight buffer size: 30720Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] GPUTaskState buffer size: 200704Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] GPUTask Stats buffer size: 2048Kbytes

[LuxRays][53.266] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] SamplerSharedData buffer size: 1608Kbytes

[LuxCore][53.282] [PathOCLBaseRenderThread::1] Size of a Sample: 40bytes

[LuxRays][53.282] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Sample buffer size: 20480Kbytes

[LuxCore][53.282] [PathOCLBaseRenderThread::1] Size of a SampleData: 8bytes

[LuxRays][53.282] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] SampleData buffer size: 4096Kbytes

[LuxCore][53.282] [PathOCLBaseRenderThread::1] Size of a SampleResult: 428bytes

[LuxRays][53.282] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] SampleResult buffer size: 219136Kbytes

[LuxRays][53.282] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] PathInfo buffer size: 55296Kbytes

[LuxRays][53.282] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] DirectLightVolumeInfo buffer size: 22528Kbytes

[LuxRays][53.282] [Device AMD Radeon RX 7900 XTX OpenCLIntersect] Pixel Filter Distribution buffer size: 33Kbytes

[LuxCore][53.297] [PathOCLBaseRenderThread::1] Compiling kernels

[LuxRays][53.297] [PathOCL kernel] Compiler options: -D LUXRAYS_OPENCL_KERNEL -D SLG_OPENCL_KERNEL -D RENDER_ENGINE_PATHOCL -D PARAM_RAY_EPSILON_MIN=1e-05f -D PARAM_RAY_EPSILON_MAX=0.1f -D LUXCORE_GENERIC_OPENCL -D LUXRAYS_OPENCL_DEVICE -D LUXRAYS_OS_WINDOWS -cl-fast-relaxed-math -cl-mad-enable

[LuxRays][53.297] [PathOCL kernel] Compiling kernels

[Acrivec]

Same issue on blender 5.0 and blend lux core 2.10.2.