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20 hours ago •
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darktable-org
opencl crash when demosaicing with markesteijn an x-trans raw (X-T20)
Is there an existing issue for this?
- [x] I checked and did not find my issue in the already reported ones
Describe the bug
Opencl multiple crashes when attempting to edit an X-T20 raw with markesteijn set as demosaicing algorithm.
At some point, darktable disables opencl and use only CPU: an alert is shown. I tested with a fresh clean config folder and no sidecar file associated.
Happens on all my X-T20 raw, but not on X-M1 files. Never with frequential chroma domain (is that it in english?). Can't be sure with VNG.
Steps to reproduce
- With a clean config folder, add the attached X-T20 picture to the library
- Open darkroom to start editing the file and look at opencl going mad
The bug triggers inconsistently: sometimes, you need to have edited at least one time the file, close darktable, open and edit again. Can also be triggered randomly when editing or almost always when displaying a snapshot taken a few clicks ago. I could not find any pattern linked to a particular module
Expected behavior
opencl should run smoothly with no hickups
Logfile | Screenshot | Screencast
Output of darktable -d opencl
darktable 5.0.1
Copyright (C) 2012-2025 Johannes Hanika and other contributors.
Compile options:
Bit depth -> 64 bit
Debug -> DISABLED
SSE2 optimizations -> ENABLED
OpenMP -> ENABLED
OpenCL -> ENABLED
Lua -> ENABLED - API version 9.4.0
Colord -> ENABLED
gPhoto2 -> ENABLED
GMIC -> ENABLED - Compressed LUTs are supported
GraphicsMagick -> ENABLED
ImageMagick -> DISABLED
libavif -> ENABLED
libheif -> ENABLED
libjxl -> ENABLED
LibRaw -> ENABLED - Version 0.22.0-Devel202403
OpenJPEG -> ENABLED
OpenEXR -> ENABLED
WebP -> ENABLED
See https://www.darktable.org/resources/ for detailed documentation.
See https://github.com/darktable-org/darktable/issues/new/choose to report bugs.
0.0001 [dt starting]
darktable -d opencl
0,1859 [dt_get_sysresource_level] switched to 1 as `default'
0,1859 total mem: 15933MB
0,1859 mipmap cache: 1991MB
0,1859 available mem: 7966MB
0,1859 singlebuff: 124MB
0.2150 [opencl_init] opencl library 'libOpenCL' found on your system and loaded, preference 'default path'
0.2510 [opencl_init] found 2 platforms
0.2511 [opencl_init] possibly a multiple platform problem for `AMD Accelerated Parallel Processing'
0.2511 [opencl_init] no devices found for Advanced Micro Devices, Inc. (vendor) - AMD Accelerated Parallel Processing (name)
[opencl_init] found 1 device
[dt_opencl_device_init]
DEVICE: 0: 'Ellesmere'
CONF KEY: cldevice_v5_amdacceleratedparallelprocessingellesmere
PLATFORM, VENDOR & ID: AMD Accelerated Parallel Processing, Advanced Micro Devices, Inc., ID=4098
CANONICAL NAME: amdacceleratedparallelprocessingellesmere
DRIVER VERSION: 3380.4 (PAL,HSAIL)
DEVICE VERSION: OpenCL 2.0 AMD-APP (3380.4)
DEVICE_TYPE: GPU, dedicated mem
GLOBAL MEM SIZE: 4096 MB
MAX MEM ALLOC: 3264 MB
MAX IMAGE SIZE: 16384 x 16384
MAX WORK GROUP SIZE: 256
MAX WORK ITEM DIMENSIONS: 3
MAX WORK ITEM SIZES: [ 1024 1024 1024 ]
ASYNC PIXELPIPE: NO
PINNED MEMORY TRANSFER: NO
AVOID ATOMICS: NO
MICRO NAP: 250
ROUNDUP WIDTH & HEIGHT 16x16
CHECK EVENT HANDLES: 128
TILING ADVANTAGE: 0.000
DEFAULT DEVICE: NO
KERNEL BUILD DIRECTORY: /usr/share/darktable/kernels
KERNEL DIRECTORY: /home/denis/.cache/darktable/cached_v5_kernels_for_AMDAcceleratedParallelProcessingEllesmere_33804PALHSAIL
CL COMPILER OPTION: -cl-fast-relaxed-math
CL COMPILER COMMAND: -w -cl-fast-relaxed-math -DAMD=1 -I"/usr/share/darktable/kernels"
KERNEL LOADING TIME: 0.0740 sec
[opencl_init] OpenCL successfully initialized. internal numbers and names of available devices:
[opencl_init] 0 'AMD Accelerated Parallel Processing Ellesmere'
0.5136 [opencl_init] FINALLY: opencl PREFERENCE=ON is AVAILABLE and ENABLED.
[opencl_init] opencl_scheduling_profile: 'default'
[opencl_init] opencl_device_priority: '*/!0,*/*/*/!0,*'
[opencl_init] opencl_mandatory_timeout: 1000
[opencl_update_priorities] these are your device priorities:
[opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 -1 0 0 -1
[opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[opencl_update_priorities] image preview export thumbs preview2
[opencl_update_priorities] 0 0 0 0 0
[opencl_synchronization_timeout] synchronization timeout set to 200
[opencl_update_priorities] these are your device priorities:
[opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 -1 0 0 -1
[opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[opencl_update_priorities] image preview export thumbs preview2
[opencl_update_priorities] 0 0 0 0 0
[opencl_synchronization_timeout] synchronization timeout set to 200
1,6618 [lib_load_module] failed to open `midi': libportmidi.so.2: Ne peut ouvrir le fichier d'objet partagé: Aucun fichier ou dossier de ce nom
2,3160 [dt_opencl_check_tuning] use 2389MB (headroom=OFF, pinning=OFF) on device `AMD Accelerated Parallel Processing Ellesmere' id=0
5,7278 [opencl_events_flush] execution of '[Read Image (from device to host)]' failed: -59
5,7279 pipe aborts CL0 [full] demosaic 800 ( 0/ 0) 6032x4011 scale=1,0000 --> ( 0/ 0) 1284x 854 scale=0,2129 couldn't run module on GPU, falling back to CPU
6,8030 pipe aborts CL0 [full] exposure 2400 ( 0/ 0) 1284x 854 scale=0,2129 --> ( 0/ 0) 1284x 854 scale=0,2129 couldn't run module on GPU, falling back to CPU
6,8378 pipe aborts CL0 [full] colorin 3200 ( 0/ 0) 1284x 854 scale=0,2129 --> ( 0/ 0) 1284x 854 scale=0,2129 couldn't run module on GPU, falling back to CPU
6,9024 pipe aborts CL0 [full] colorequal 5100 ( 0/ 0) 1284x 854 scale=0,2129 --> ( 0/ 0) 1284x 854 scale=0,2129 couldn't run module on GPU, falling back to CPU
7,1855 pipe aborts CL0 [full] colorbalancergb 5200 ( 0/ 0) 1284x 854 scale=0,2129 --> ( 0/ 0) 1284x 854 scale=0,2129 couldn't run module on GPU, falling back to CPU
7,3575 pipe aborts CL0 [full] colorout 8300 ( 0/ 0) 1284x 854 scale=0,2129 --> ( 0/ 0) 1284x 854 scale=0,2129 couldn't run module on GPU, falling back to CPU
7,3758 pipe restarting on CPU CL0 [full] ( 0/ 0) 1284x 854 scale=0,2129 --> ( 0/ 0) 1284x 854 scale=0,2129 ID=11
[opencl_summary_statistics] device 'AMD Accelerated Parallel Processing Ellesmere' (0): 485 out of 486 events were successful and 0 events lost. max event=245
Commit
No response
Where did you obtain darktable from?
distro packaging
darktable version
5.1.0
What OS are you using?
Linux
What is the version of your OS?
Arch (endeavourOS)
Describe your system
No response
Are you using OpenCL GPU in darktable?
Yes
If yes, what is the GPU card and driver?
radeon RX 480 ellesmere (polaris 10) 4GB; driver: AMDGPU via package vulkan-radeon; ROCm v6.3.2-1 for opencl
Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip
- Happens also with 5.0.1 and 4.8.1 appimage
- X-T20 raw only, tested with X-M1 no problem, as for the rest...?
- yes, happens with fresh edit, but not always
- yes with a new config dir
- no lua
Attached raw: DSCF9118.txt
- You have two OpenCL drivers installed so there are two platforms and that often leads to OpenCL instabilities.
- Could you check
clinfoif at least that works correcly ? - We often had OpenCL problems with AMD as drivers & hardware mix might not be correctly supported.
There is an idea here , could you please carefully test and report on these two questions
- Can you confirm there are absolutely no crashes if you use bayer sensor raw images with no modules activated except the defaults?
- Only if (1) is confirmed, could you try out on bayer images if there are any errors if you enable the "darkroom visualize overexposure" button?
- Only if (1) is confirmed, do you have issues on bayer images while using the "colorreconstruction" module?
- You have two OpenCL drivers installed so there are two platforms and that often leads to OpenCL instabilities.
Yeah, there is something odd going on here, I'm still investigating it. There is no reason that 2 "platforms" appear on my install because it is quite fresh, I only have one graphic card with one single GPU, I never installed anything else than AMDGPU free and opencl components and my CPU is an intel...
- Could you check
clinfoif at least that works correcly ?
Yes, it works properly, also listing the 2nd platform for which there is no device. Below for the records.
Number of platforms 2
Platform Name AMD Accelerated Parallel Processing
Platform Vendor Advanced Micro Devices, Inc.
Platform Version OpenCL 2.1 AMD-APP (3380.4)
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd cl_amd_event_callback cl_amd_offline_devices
Platform Extensions function suffix AMD
Platform Host timer resolution 1ns
Platform Name AMD Accelerated Parallel Processing
Platform Vendor Advanced Micro Devices, Inc.
Platform Version OpenCL 2.1 AMD-APP (3635.0)
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd cl_amd_event_callback
Platform Extensions function suffix AMD
Platform Host timer resolution 1ns
Platform Name AMD Accelerated Parallel Processing
Number of devices 1
Device Name Ellesmere
Device Vendor Advanced Micro Devices, Inc.
Device Vendor ID 0x1002
Device Version OpenCL 2.0 AMD-APP (3380.4)
Driver Version 3380.4 (PAL,HSAIL)
Device OpenCL C Version OpenCL C 2.0
Device Type GPU
Device Board Name (AMD) AMD Radeon RX 480 Graphics
Device PCI-e ID (AMD) 0x67df
Device Topology (AMD) PCI-E, 0000:01:00.0
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 36
SIMD per compute unit (AMD) 4
SIMD width (AMD) 16
SIMD instruction width (AMD) 1
Max clock frequency 1303MHz
Graphics IP (AMD) 8.0
Device Partition (core)
Max number of sub-devices 36
Supported partition types None
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 1024x1024x1024
Max work group size 256
Preferred work group size (AMD) 256
Max work group size (AMD) 1024
Preferred work group size multiple (kernel) 64
Wavefront width (AMD) 64
Preferred / native vector sizes
char 4 / 4
short 2 / 2
int 1 / 1
long 1 / 1
half 1 / 1 (cl_khr_fp16)
float 1 / 1
double 1 / 1 (cl_khr_fp64)
Half-precision Floating-point support (cl_khr_fp16)
Denormals No
Infinity and NANs No
Round to nearest No
Round to zero No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Single-precision Floating-point support (core)
Denormals No
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations Yes
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 64, Little-Endian
Global memory size 4294967296 (4GiB)
Global free memory (AMD) 4128768 (3.938GiB) 3866624 (3.688GiB)
Global memory channels (AMD) 8
Global memory banks per channel (AMD) 4
Global memory bank width (AMD) 256 bytes
Error Correction support No
Max memory allocation 3422552064 (3.188GiB)
Unified memory for Host and Device No
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing Yes
Fine-grained system sharing No
Atomics No
Minimum alignment for any data type 128 bytes
Alignment of base address 2048 bits (256 bytes)
Preferred alignment for atomics
SVM 0 bytes
Global 0 bytes
Local 0 bytes
Max size for global variable 3080296704 (2.869GiB)
Preferred total size of global vars 4294967296 (4GiB)
Global Memory cache type Read/Write
Global Memory cache size 16384 (16KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 213909504 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 256 bytes
Pitch alignment for 2D image buffers 256 pixels
Max 2D image size 16384x16384 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 128
Max number of write image args 64
Max number of read/write image args 64
Max number of pipe args 16
Max active pipe reservations 16
Max pipe packet size 3422552064 (3.188GiB)
Local memory type Local
Local memory size 65536 (64KiB)
Local memory size per CU (AMD) 65536 (64KiB)
Local memory banks (AMD) 32
Max number of constant args 8
Max constant buffer size 3422552064 (3.188GiB)
Preferred constant buffer size (AMD) 16384 (16KiB)
Max size of kernel argument 1024
Queue properties (on host)
Out-of-order execution No
Profiling Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 262144 (256KiB)
Max size 8388608 (8MiB)
Max queues on device 1
Max events on device 1024
Prefer user sync for interop Yes
Number of P2P devices (AMD) 0
Profiling timer resolution 1ns
Profiling timer offset since Epoch (AMD) 1743922974474923267ns (Sun Apr 6 09:02:54 2025)
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Thread trace supported (AMD) Yes
Number of async queues (AMD) 4
Max real-time compute queues (AMD) 1
Max real-time compute units (AMD) 0
printf() buffer size 4194304 (4MiB)
Built-in kernels (n/a)
Device Extensions cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_gl_sharing cl_khr_gl_depth_images cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_image2d_from_buffer cl_khr_subgroups cl_khr_gl_event cl_khr_depth_images cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_amd_copy_buffer_p2p
Platform Name AMD Accelerated Parallel Processing
Number of devices 0
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) AMD Accelerated Parallel Processing
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [AMD]
clCreateContext(NULL, ...) [default] Success [AMD]
clCreateContext(NULL, ...) [other] <error: no devices in non-default plaforms>
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name AMD Accelerated Parallel Processing
Device Name Ellesmere
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name AMD Accelerated Parallel Processing
Device Name Ellesmere
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
Platform Name AMD Accelerated Parallel Processing
Device Name Ellesmere
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.3.2
ICD loader Profile OpenCL 3.0
- Can you confirm there are absolutely no crashes if you use bayer sensor raw images with no modules activated except the defaults?
No crashes whatsoever with only defaults modules, and also none when applying my method to crash x-trans pictures. I've been using the x-a1 sample from raw.pixls.us
- Only if (1) is confirmed, could you try out on bayer images if there are any errors if you enable the "darkroom visualize overexposure" button?
Works like a charm
- Only if (1) is confirmed, do you have issues on bayer images while using the "colorreconstruction" module?
No problem either
To help a little bit more, I tested several generations of x-trans sensor using samples from raw.pixls.us. The bug happens with x-trans 2, 3 and 4 generation (x-T2, x-T20, x-T4 samples respectively), no bug with x-trans 1 (x-M1 + x-E1). With X-T20 at least, the bug occurs with uncompressed and compressed raw. Tested only uncompressed for the others.
This issue has been marked as stale due to inactivity for the last 60 days. It will be automatically closed in 300 days if no update occurs. Please check if the master branch has fixed it and report again or close the issue.
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