The problem: When running darktable-cltest -d verbose, I see that Darktable has trouble compiling demosaic_ppg.cl because it can’t find opencl-c-base.h. This file is present on the system, but at another location.
Context: I’m using Fedora 40 and have installed darktable with DNF. I’m using a Lenovo E495 with AMD Radeon Vega 8 GPU (device name gfx902:xnack+). Fedora comes pre-installed with ROCm 6, and OpenCL works. I have dedicated 2GB memory to the GPU in BIOS. Some more infromation:
Output of clinfo
Summary
Number of platforms 1
Platform Name AMD Accelerated Parallel Processing
Platform Vendor Advanced Micro Devices, Inc.
Platform Version OpenCL 2.1 AMD-APP (3602.0)
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 gfx902:xnack+
Device Vendor Advanced Micro Devices, Inc.
Device Vendor ID 0x1002
Device Version OpenCL 2.0
Driver Version 3602.0 (HSA1.1,LC)
Device OpenCL C Version OpenCL C 2.0
Device Type GPU
Device Board Name (AMD) AMD Radeon Vega 8 Graphics
Device PCI-e ID (AMD) 0x15d8
Device Topology (AMD) PCI-E, 0000:05:00.0
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 8
SIMD per compute unit (AMD) 4
SIMD width (AMD) 16
SIMD instruction width (AMD) 1
Max clock frequency 1200MHz
Graphics IP (AMD) 9.0
Device Partition (core)
Max number of sub-devices 8
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 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
Single-precision Floating-point support (core)
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
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 2147483648 (2GiB)
Global free memory (AMD) 1927168 (1.838GiB) 1927168 (1.838GiB)
Global memory channels (AMD) 4
Global memory banks per channel (AMD) 4
Global memory bank width (AMD) 256 bytes
Error Correction support No
Max memory allocation 1825361096 (1.7GiB)
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 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 0 bytes
Global 0 bytes
Local 0 bytes
Max size for global variable 1825361096 (1.7GiB)
Preferred total size of global vars 2147483648 (2GiB)
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 134217728 pixels
Max 1D or 2D image array size 8192 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 16384x16384x8192 pixels
Max number of read image args 128
Max number of write image args 8
Max number of read/write image args 64
Max number of pipe args 16
Max active pipe reservations 16
Max pipe packet size 1825361096 (1.7GiB)
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 1825361096 (1.7GiB)
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) 0ns (Thu Jan 1 01:00:00 1970)
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Thread trace supported (AMD) No
Number of async queues (AMD) 8
Max real-time compute queues (AMD) 8
Max real-time compute units (AMD) 8
printf() buffer size 4194304 (4MiB)
Built-in kernels (n/a)
Device Extensions cl_khr_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_amd_device_attribute_query cl_amd_media_ops cl_amd_media_ops2 cl_khr_image2d_from_buffer cl_khr_subgroups cl_khr_depth_images cl_amd_copy_buffer_p2p cl_amd_assembly_program
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]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name AMD Accelerated Parallel Processing
Device Name gfx902:xnack+
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 gfx902:xnack+
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 gfx902:xnack+
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
Output of rocminfo
Summary
ROCk module is loaded
=====================
HSA System Attributes
=====================
Runtime Version: 1.1
System Timestamp Freq.: 1000.000000MHz
Sig. Max Wait Duration: 18446744073709551615 (0xFFFFFFFFFFFFFFFF) (timestamp count)
Machine Model: LARGE
System Endianness: LITTLE
Mwaitx: DISABLED
DMAbuf Support: YES
==========
HSA Agents
==========
*******
Agent 1
*******
Name: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
Uuid: CPU-XX
Marketing Name: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
Vendor Name: CPU
Feature: None specified
Profile: FULL_PROFILE
Float Round Mode: NEAR
Max Queue Number: 0(0x0)
Queue Min Size: 0(0x0)
Queue Max Size: 0(0x0)
Queue Type: MULTI
Node: 0
Device Type: CPU
Cache Info:
L1: 32768(0x8000) KB
Chip ID: 0(0x0)
ASIC Revision: 0(0x0)
Cacheline Size: 64(0x40)
Max Clock Freq. (MHz): 2100
BDFID: 0
Internal Node ID: 0
Compute Unit: 8
SIMDs per CU: 0
Shader Engines: 0
Shader Arrs. per Eng.: 0
WatchPts on Addr. Ranges:1
Features: None
Pool Info:
Pool 1
Segment: GLOBAL; FLAGS: FINE GRAINED
Size: 30677972(0x1d41bd4) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 2
Segment: GLOBAL; FLAGS: KERNARG, FINE GRAINED
Size: 30677972(0x1d41bd4) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
Pool 3
Segment: GLOBAL; FLAGS: COARSE GRAINED
Size: 30677972(0x1d41bd4) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Alignment: 4KB
Accessible by all: TRUE
ISA Info:
*******
Agent 2
*******
Name: gfx902
Uuid: GPU-XX
Marketing Name: AMD Radeon Vega 8 Graphics
Vendor Name: AMD
Feature: KERNEL_DISPATCH
Profile: BASE_PROFILE
Float Round Mode: NEAR
Max Queue Number: 128(0x80)
Queue Min Size: 64(0x40)
Queue Max Size: 131072(0x20000)
Queue Type: MULTI
Node: 1
Device Type: GPU
Cache Info:
L1: 16(0x10) KB
L2: 1024(0x400) KB
Chip ID: 5592(0x15d8)
ASIC Revision: 1(0x1)
Cacheline Size: 64(0x40)
Max Clock Freq. (MHz): 1200
BDFID: 1280
Internal Node ID: 1
Compute Unit: 8
SIMDs per CU: 4
Shader Engines: 1
Shader Arrs. per Eng.: 1
WatchPts on Addr. Ranges:4
Coherent Host Access: FALSE
Features: KERNEL_DISPATCH
Fast F16 Operation: TRUE
Wavefront Size: 64(0x40)
Workgroup Max Size: 1024(0x400)
Workgroup Max Size per Dimension:
x 1024(0x400)
y 1024(0x400)
z 1024(0x400)
Max Waves Per CU: 40(0x28)
Max Work-item Per CU: 2560(0xa00)
Grid Max Size: 4294967295(0xffffffff)
Grid Max Size per Dimension:
x 4294967295(0xffffffff)
y 4294967295(0xffffffff)
z 4294967295(0xffffffff)
Max fbarriers/Workgrp: 32
Packet Processor uCode:: 471
SDMA engine uCode:: 169
IOMMU Support:: None
Pool Info:
Pool 1
Segment: GLOBAL; FLAGS: COARSE GRAINED
Size: 2097152(0x200000) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Alignment: 4KB
Accessible by all: FALSE
Pool 2
Segment: GLOBAL; FLAGS: EXTENDED FINE GRAINED
Size: 2097152(0x200000) KB
Allocatable: TRUE
Alloc Granule: 4KB
Alloc Alignment: 4KB
Accessible by all: FALSE
Pool 3
Segment: GROUP
Size: 64(0x40) KB
Allocatable: FALSE
Alloc Granule: 0KB
Alloc Alignment: 0KB
Accessible by all: FALSE
ISA Info:
ISA 1
Name: amdgcn-amd-amdhsa--gfx902:xnack+
Machine Models: HSA_MACHINE_MODEL_LARGE
Profiles: HSA_PROFILE_BASE
Default Rounding Mode: NEAR
Default Rounding Mode: NEAR
Fast f16: TRUE
Workgroup Max Size: 1024(0x400)
Workgroup Max Size per Dimension:
x 1024(0x400)
y 1024(0x400)
z 1024(0x400)
Grid Max Size: 4294967295(0xffffffff)
Grid Max Size per Dimension:
x 4294967295(0xffffffff)
y 4294967295(0xffffffff)
z 4294967295(0xffffffff)
FBarrier Max Size: 32
*** Done ***
Output of darktable-cltest -d verbose
Summary
darktable 4.6.1
Copyright (C) 2012-2024 Johannes Hanika and other contributors.
Compile options:
Bit depth -> 64 bit
Debug -> DISABLED
SSE2 optimizations -> ENABLED
OpenMP -> ENABLED
OpenCL -> ENABLED
Lua -> ENABLED - API version 9.2.0
Colord -> ENABLED
gPhoto2 -> ENABLED
GMIC -> ENABLED - Compressed LUTs are supported
GraphicsMagick -> ENABLED
ImageMagick -> DISABLED
libavif -> ENABLED
libheif -> ENABLED
libjxl -> ENABLED
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.
0,0274 [dt_get_sysresource_level] switched to 1 as `default'
0,0274 total mem: 29958MB
0,0274 mipmap cache: 3744MB
0,0274 available mem: 14979MB
0,0274 singlebuff: 234MB
0.2173 [opencl_init] opencl disabled via darktable preferences
0.2175 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
0.2175 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
0.2175 [dt_dlopencl_init] found default opencl runtime library 'libOpenCL.so.1'
0.2176 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
0.2824 [opencl_init] found 1 platform
[opencl_init] found 1 device
[dt_opencl_device_init]
0.2824 [dt_opencl_write_device_config] writing data '0 250 0 16 16 128 0 0 0.000 0.000 0.250' for 'cldevice_v5_amdacceleratedparallelprocessinggfx902xnack'
0.2825 [dt_opencl_write_device_config] writing data '600' for 'cldevice_v5_amdacceleratedparallelprocessinggfx902xnack_id0'
DEVICE: 0: 'gfx902:xnack+'
PLATFORM, VENDOR & ID: AMD Accelerated Parallel Processing, Advanced Micro Devices, Inc., ID=4098
CANONICAL NAME: amdacceleratedparallelprocessinggfx902xnack
DRIVER VERSION: 3602.0 (HSA1.1,LC)
DEVICE VERSION: OpenCL 2.0
DEVICE_TYPE: GPU, dedicated mem
GLOBAL MEM SIZE: 2048 MB
MAX MEM ALLOC: 1741 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/ruben/.cache/darktable/cached_v3_kernels_for_AMDAcceleratedParallelProcessinggfx902xnack_36020HSA11LC
CL COMPILER OPTION: -cl-fast-relaxed-math
CL COMPILER COMMAND: -w -cl-fast-relaxed-math -DAMD=1 -I"/usr/share/darktable/kernels"
0.6095 [dt_opencl_device_init] testing program `demosaic_ppg.cl' ..
0.6097 [opencl_fopen_stat] could not open file `/home/ruben/.cache/darktable/cached_v3_kernels_for_AMDAcceleratedParallelProcessinggfx902xnack_36020HSA11LC/demosaic_ppg.cl.bin'!
0.6097 [opencl_load_program] could not load cached binary program, trying to compile source
0.6098 [opencl_load_program] successfully loaded program from '/usr/share/darktable/kernels/demosaic_ppg.cl' MD5: '199039a5cc99dbce630b32a1345f6d70'
0.6492 [opencl_build_program] could not build program: CL_BUILD_PROGRAM_FAILURE
0.6493 [opencl_build_program] BUILD STATUS: -2
0.6493 BUILD LOG:
0.6493 fatal error: malformed or corrupted AST file: 'could not find file '/usr/lib64/llvm17/bin/../../../lib/clang/17/include/opencl-c-base.h' referenced by AST file '/tmp/comgr-00ca7b/include/opencl1.2-c.pch''
1 error generated.
Error: Failed to compile source (from CL or HIP source to LLVM IR).
0.6493 [dt_opencl_device_init] failed to compile program `demosaic_ppg.cl'!
0.6493 [dt_opencl_write_device_config] writing data '0 250 0 16 16 128 0 0 0.000 0.000 0.250' for 'cldevice_v5_amdacceleratedparallelprocessinggfx902xnack'
0.6493 [dt_opencl_write_device_config] writing data '600' for 'cldevice_v5_amdacceleratedparallelprocessinggfx902xnack_id0'
[opencl_init] no suitable devices found.
0.6493 [opencl_init] FINALLY: opencl is NOT AVAILABLE and NOT ENABLED.
The relevant error is the following:
fatal error: malformed or corrupted AST file:
'could not find file '/usr/lib64/llvm17/bin/../../../lib/clang/17/include/opencl-c-base.h' referenced by AST file '/tmp/comgr-00ca7b/include/opencl1.2-c.pch''
Error: Failed to compile source (from CL or HIP source to LLVM IR).
However, I do have the opencl-c-base.h, but it is located at /usr/lib/clang/18/include/
Not sure where to go from here. If I knew the whole path that is truncated in the error message, I could try to symlink the directory, but not sure if it would help.
