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09-30-2021
08:07 AM
Linux OpenCL 21.30 broken with RX460
I'm running a RX460 card under Arch Linux using the opencl-amd (AUR) package together with the open source X driver. While the 21.20.1271047 driver gives a nice opencl boost opencl using 21.30.1290604 doesn't seem to work with darktable at all though not reporting any error.
clinfo reports it this way different:
21.20:
Number of platforms 1
Platform Name AMD Accelerated Parallel Processing
Platform Vendor Advanced Micro Devices, Inc.
Platform Version OpenCL 2.1 AMD-APP (3224.4)
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
Number of devices 1
Device Name Baffin
Device Vendor Advanced Micro Devices, Inc.
Device Vendor ID 0x1002
Device Version OpenCL 1.2 AMD-APP (3224.4)
Driver Version 3224.4
Device OpenCL C Version OpenCL C 1.2
Device Type GPU
Device Board Name (AMD) AMD Radeon (TM) RX 460 Graphics
Device PCI-e ID (AMD) 0
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 14
SIMD per compute unit (AMD) 4
SIMD width (AMD) 16
SIMD instruction width (AMD) 1
Max clock frequency 1220MHz
Graphics IP (AMD) 8.0
Device Partition (core)
Max number of sub-devices 14
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 3667648512 (3.416GiB)
Global free memory (AMD) 3562096 (3.397GiB) 3099021 (2.955GiB)
Global memory channels (AMD) 4
Global memory banks per channel (AMD) 16
Global memory bank width (AMD) 256 bytes
Error Correction support No
Max memory allocation 2935232512 (2.734GiB)
Unified memory for Host and Device No
Minimum alignment for any data type 128 bytes
Alignment of base address 2048 bits (256 bytes)
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 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 8
Local memory type Local
Local memory size 32768 (32KiB)
Local memory size per CU (AMD) 65536 (64KiB)
Local memory banks (AMD) 32
Max number of constant args 8
Max constant buffer size 2935232512 (2.734GiB)
Preferred constant buffer size (AMD) 16384 (16KiB)
Max size of kernel argument 1024
Queue properties
Out-of-order execution No
Profiling Yes
Prefer user sync for interop Yes
Profiling timer resolution 1ns
Profiling timer offset since Epoch (AMD) 1632977528693872314ns (Thu Sep 30 06:52:08 2021)
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Thread trace supported (AMD) Yes
Number of async queues (AMD) 2
Max real-time compute queues (AMD) 0
Max real-time compute units (AMD) 0
SPIR versions 1.2
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_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_amd_bus_addressable_memory cl_khr_spir cl_khr_gl_event
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 Baffin
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 Baffin
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 Baffin
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.3.1
ICD loader Profile OpenCL 3.0
21.30:
Number of platforms 1
Platform Name AMD Accelerated Parallel Processing
Platform Vendor Advanced Micro Devices, Inc.
Platform Version OpenCL 2.1 AMD-APP (3224.4)
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
Number of devices 1
Device Name Baffin
Device Vendor Advanced Micro Devices, Inc.
Device Vendor ID 0x1002
Device Version OpenCL 1.2 AMD-APP (3224.4)
Driver Version 3224.4
Device OpenCL C Version OpenCL C 1.2
Device Type GPU
Device Board Name (AMD) AMD Radeon (TM) RX 460 Graphics
Device PCI-e ID (AMD) 0
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 14
SIMD per compute unit (AMD) 4
SIMD width (AMD) 16
SIMD instruction width (AMD) 1
Max clock frequency 1220MHz
Graphics IP (AMD) 8.0
Device Partition (core)
Max number of sub-devices 14
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 3667648512 (3.416GiB)
Global free memory (AMD) 3562096 (3.397GiB) 3099021 (2.955GiB)
Global memory channels (AMD) 4
Global memory banks per channel (AMD) 16
Global memory bank width (AMD) 256 bytes
Error Correction support No
Max memory allocation 2935232512 (2.734GiB)
Unified memory for Host and Device No
Minimum alignment for any data type 128 bytes
Alignment of base address 2048 bits (256 bytes)
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 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 8
Local memory type Local
Local memory size 32768 (32KiB)
Local memory size per CU (AMD) 65536 (64KiB)
Local memory banks (AMD) 32
Max number of constant args 8
Max constant buffer size 2935232512 (2.734GiB)
Preferred constant buffer size (AMD) 16384 (16KiB)
Max size of kernel argument 1024
Queue properties
Out-of-order execution No
Profiling Yes
Prefer user sync for interop Yes
Profiling timer resolution 1ns
Profiling timer offset since Epoch (AMD) 1632977528693872314ns (Thu Sep 30 06:52:08 2021)
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Thread trace supported (AMD) Yes
Number of async queues (AMD) 2
Max real-time compute queues (AMD) 0
Max real-time compute units (AMD) 0
SPIR versions 1.2
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_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_amd_bus_addressable_memory cl_khr_spir cl_khr_gl_event
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 Baffin
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 Baffin
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 Baffin
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.3.1
ICD loader Profile OpenCL 3.0
Note the memory difference and OpenCL 1.2 vs. 2.0. - I've reported this first to the darktable devs assuming DT misdetects the opencl image support somehow but they ask me to report it back to the driver here:
https://github.com/darktable-org/darktable/issues/10118
Any idea what's wrong with 21.30 not speeding up any image manipulation here?
1 Reply
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10-09-2021
07:45 AM
I have the same problem with blender and a RX 570
with 21.20 everything works as expected.
with 21.30 dmesg gets spammed with:
[69971.012190] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00000402 for process blend
er pid 1009381 thread blender pid 1010033
[69971.012203] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.012206] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0E004002
[69971.012210] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, read
from 'TC1' (0x54433100) (4)
[69971.012219] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00004802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.012225] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.012228] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0E048002
[69971.012231] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, read
from 'TC4' (0x54433400) (72)
[69971.012266] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00000402 for process blend
er pid 1009381 thread blender pid 1010033
[69971.012273] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.012276] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0E004002
[69971.012279] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, read
from 'TC1' (0x54433100) (4)
[69971.012333] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00004802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.012338] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.012341] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0E048002
[69971.012344] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, read
from 'TC4' (0x54433400) (72)
[69971.012354] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00000402 for process blend
er pid 1009381 thread blender pid 1010033
[69971.012359] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.012362] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0E048002
[69971.012365] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, read
from 'TC4' (0x54433400) (72)
[69971.012373] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00004802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.012378] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.012381] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0F004002
[69971.012384] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, writ
e from 'TC1' (0x54433100) (4)
[69971.013924] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00024802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.013932] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.013936] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0F048002
[69971.013941] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, writ
e from 'TC4' (0x54433400) (72)
[69971.014022] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00024802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.014029] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.014032] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0F048002
[69971.014035] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, writ
e from 'TC4' (0x54433400) (72)
[69971.014098] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00024802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.014104] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.014107] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0F048002
[69971.014110] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, writ
e from 'TC4' (0x54433400) (72)
[69971.014182] amdgpu 0000:02:00.0: amdgpu: GPU fault detected: 147 0x00024802 for process blend
er pid 1009381 thread blender pid 1010033
[69971.014188] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[69971.014191] amdgpu 0000:02:00.0: amdgpu: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0F048002
[69971.014194] amdgpu 0000:02:00.0: amdgpu: VM fault (0x02, vmid 7, pasid 32791) at page 0, writ
e from 'TC4' (0x54433400) (72)
lspci:
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 4
70/480/570/570X/580/580X/590] (rev e1) (prog-if 00 [VGA controller])
Subsystem: ASRock Incorporation Device 5032
Flags: bus master, fast devsel, latency 0, IRQ 28
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at cfe00000 (64-bit, prefetchable) [size=2M]
I/O ports at a000 [size=256]
Memory at fba80000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [200] Physical Resizable BAR
Capabilities: [270] Secondary PCI Express
Capabilities: [2b0] Address Translation Service (ATS)
Capabilities: [2c0] Page Request Interface (PRI)
Capabilities: [2d0] Process Address Space ID (PASID)
Capabilities: [320] Latency Tolerance Reporting
Capabilities: [328] Alternative Routing-ID Interpretation (ARI)
Capabilities: [370] L1 PM Substates
Kernel driver in use: amdgpu
Kernel modules: amdgpu
clinfo:
Number of platforms 1
Platform Name AMD Accelerated Parallel Processing
Platform Vendor Advanced Micro Devices, Inc.
Platform Version OpenCL 2.1 AMD-APP (3302.5)
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
Number of devices 1
Device Name Ellesmere
Device Vendor Advanced Micro Devices, Inc.
Device Vendor ID 0x1002
Device Version OpenCL 2.0 AMD-APP (3302.5)
Driver Version 3302.5 (PAL,HSAIL)
Device OpenCL C Version OpenCL C 2.0
Device Type GPU
Device Board Name (AMD) Radeon RX 590 Series
Device PCI-e ID (AMD) 0x67df
Device Topology (AMD) PCI-E, 0000:02:00.0
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 1560MHz
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 8589934592 (8GiB)
Global free memory (AMD) 8323072 (7.938GiB) 8060928 (7.688GiB)
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 7073274265 (6.587GiB)
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 6365946624 (5.929GiB)
Preferred total size of global vars 8589934592 (8GiB)
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 442079641 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 2778306969 (2.587GiB)
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 7073274265 (6.587GiB)
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) 1633713244942630476ns (Fri Oct 8 19:14:04 2021)
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
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 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 2.3.1
ICD loader Profile OpenCL 3.0
