athas
commented
1 year ago Good question. Futhark used to work fine on Intel GPUs (it was the main development platform), but it's been a while and we don't have any Intel GPUs in our regular test systems. Try compiling the program like this:
$ futhark opencl fut/examples.futand then running it with
$ echo '[1,2,3,4] [2,3,4,1]' | fut/example -DThe -D will cause copious debug output and perhaps reveal where the problem is (it's unlikely to be in the clFinish()).
One thing I remember is that Intel GPUs did not support double precision (and judging by that clinfo output, still don't). We have code to handle that, but it might have bitrotted. Still, that should cause a different error.
callym
Hi, I'm trying to get OpenCL working on an Intel 12th Gen processor, and I get the following output: Is there any way of finding out what sort of resource it's running out of? I've got plenty of RAM so it should be fine (and the code I'm trying out shouldn't use a lot of memory anyway).
I've tried Blender Cycles with OpenCL and it seemed to work, but didn't run any extensive tests.
Running with
--backend {c,ispc,multicore}works fineThe
fut/example.futcode is:The output for
clinfois below:Details
Number of platforms 1 Platform Name Intel(R) OpenCL HD Graphics Platform Vendor Intel(R) Corporation Platform Version OpenCL 3.0 Platform Profile FULL_PROFILE Platform Extensions cl_khr_byte_addressable_store cl_khr_device_uuid cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_command_queue_families cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_subgroup_extended_types cl_khr_subgroup_non_uniform_vote cl_khr_subgroup_ballot cl_khr_subgroup_non_uniform_arithmetic cl_khr_subgroup_shuffle cl_khr_subgroup_shuffle_relative cl_khr_subgroup_clustered_reduce cl_intel_device_attribute_query cl_khr_suggested_local_work_size cl_intel_split_work_group_barrier cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_intel_planar_yuv cl_intel_packed_yuv cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_3d_image_writes cl_intel_media_block_io cl_intel_va_api_media_sharing cl_intel_sharing_format_query cl_khr_pci_bus_info cl_intel_subgroup_local_block_io Platform Extensions with Version cl_khr_byte_addressable_store 0x400000 (1.0.0) cl_khr_device_uuid 0x400000 (1.0.0) cl_khr_fp16 0x400000 (1.0.0) cl_khr_global_int32_base_atomics 0x400000 (1.0.0) cl_khr_global_int32_extended_atomics 0x400000 (1.0.0) cl_khr_icd 0x400000 (1.0.0) cl_khr_local_int32_base_atomics 0x400000 (1.0.0) cl_khr_local_int32_extended_atomics 0x400000 (1.0.0) cl_intel_command_queue_families 0x400000 (1.0.0) cl_intel_subgroups 0x400000 (1.0.0) cl_intel_required_subgroup_size 0x400000 (1.0.0) cl_intel_subgroups_short 0x400000 (1.0.0) cl_khr_spir 0x400000 (1.0.0) cl_intel_accelerator 0x400000 (1.0.0) cl_intel_driver_diagnostics 0x400000 (1.0.0) cl_khr_priority_hints 0x400000 (1.0.0) cl_khr_throttle_hints 0x400000 (1.0.0) cl_khr_create_command_queue 0x400000 (1.0.0) cl_intel_subgroups_char 0x400000 (1.0.0) cl_intel_subgroups_long 0x400000 (1.0.0) cl_khr_il_program 0x400000 (1.0.0) cl_intel_mem_force_host_memory 0x400000 (1.0.0) cl_khr_subgroup_extended_types 0x400000 (1.0.0) cl_khr_subgroup_non_uniform_vote 0x400000 (1.0.0) cl_khr_subgroup_ballot 0x400000 (1.0.0) cl_khr_subgroup_non_uniform_arithmetic 0x400000 (1.0.0) cl_khr_subgroup_shuffle 0x400000 (1.0.0) cl_khr_subgroup_shuffle_relative 0x400000 (1.0.0) cl_khr_subgroup_clustered_reduce 0x400000 (1.0.0) cl_intel_device_attribute_query 0x400000 (1.0.0) cl_khr_suggested_local_work_size 0x400000 (1.0.0) cl_intel_split_work_group_barrier 0x400000 (1.0.0) cl_intel_spirv_media_block_io 0x400000 (1.0.0) cl_intel_spirv_subgroups 0x400000 (1.0.0) cl_khr_spirv_no_integer_wrap_decoration 0x400000 (1.0.0) cl_intel_unified_shared_memory 0x400000 (1.0.0) cl_khr_mipmap_image 0x400000 (1.0.0) cl_khr_mipmap_image_writes 0x400000 (1.0.0) cl_intel_planar_yuv 0x400000 (1.0.0) cl_intel_packed_yuv 0x400000 (1.0.0) cl_khr_int64_base_atomics 0x400000 (1.0.0) cl_khr_int64_extended_atomics 0x400000 (1.0.0) cl_khr_image2d_from_buffer 0x400000 (1.0.0) cl_khr_depth_images 0x400000 (1.0.0) cl_khr_3d_image_writes 0x400000 (1.0.0) cl_intel_media_block_io 0x400000 (1.0.0) cl_intel_va_api_media_sharing 0x400000 (1.0.0) cl_intel_sharing_format_query 0x400000 (1.0.0) cl_khr_pci_bus_info 0x400000 (1.0.0) cl_intel_subgroup_local_block_io 0x400000 (1.0.0) Platform Numeric Version 0xc00000 (3.0.0) Platform Extensions function suffix INTEL Platform Host timer resolution 1ns Platform Name Intel(R) OpenCL HD Graphics Number of devices 1 Device Name Intel(R) Graphics [0x46a6] Device Vendor Intel(R) Corporation Device Vendor ID 0x8086 Device Version OpenCL 3.0 NEO Device UUID 86800000-a646-0000-0000-000000000000 Driver UUID 32322e34-332e-3234-3539-350000000000 Valid Device LUID No Device LUID c02a-a17aff7f0000 Device Node Mask 0 Device Numeric Version 0xc00000 (3.0.0) Driver Version 22.43.24595 Device OpenCL C Version OpenCL C 1.2 Device OpenCL C all versions OpenCL C 0x400000 (1.0.0) OpenCL C 0x401000 (1.1.0) OpenCL C 0x402000 (1.2.0) OpenCL C 0xc00000 (3.0.0) Device OpenCL C features __opencl_c_int64 0xc00000 (3.0.0) __opencl_c_3d_image_writes 0xc00000 (3.0.0) __opencl_c_images 0xc00000 (3.0.0) __opencl_c_read_write_images 0xc00000 (3.0.0) __opencl_c_atomic_order_acq_rel 0xc00000 (3.0.0) __opencl_c_atomic_order_seq_cst 0xc00000 (3.0.0) __opencl_c_atomic_scope_all_devices 0xc00000 (3.0.0) __opencl_c_atomic_scope_device 0xc00000 (3.0.0) __opencl_c_generic_address_space 0xc00000 (3.0.0) __opencl_c_program_scope_global_variables 0xc00000 (3.0.0) __opencl_c_work_group_collective_functions 0xc00000 (3.0.0) __opencl_c_subgroups 0xc00000 (3.0.0) Latest comfornace test passed v2022-04-22-00 Device Type GPU Device Profile FULL_PROFILE Device Available Yes Compiler Available Yes Linker Available Yes Max compute units 96 Max clock frequency 1400MHz Device Partition (core) Max number of sub-devices 0 Supported partition types None Supported affinity domains (n/a) Max work item dimensions 3 Max work item sizes 512x512x512 Max work group size 512 Preferred work group size multiple (device) 64 Preferred work group size multiple (kernel) 64 Max sub-groups per work group 64 Sub-group sizes (Intel) 8, 16, 32 Preferred / native vector sizes char 16 / 16 short 8 / 8 int 4 / 4 long 1 / 1 half 8 / 8 (cl_khr_fp16) float 1 / 1 double 1 / 1 (n/a) 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 No Double-precision Floating-point support (n/a) Address bits 64, Little-Endian Global memory size 53701718016 (50.01GiB) Error Correction support No Max memory allocation 4294959104 (4GiB) Unified memory for Host and Device Yes Shared Virtual Memory (SVM) capabilities (core) Coarse-grained buffer sharing Yes Fine-grained buffer sharing No 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 64 bytes Global 64 bytes Local 64 bytes Atomic memory capabilities relaxed, acquire/release, sequentially-consistent, work-group scope, device scope, all-devices scope Atomic fence capabilities relaxed, acquire/release, sequentially-consistent, work-item scope, work-group scope, device scope, all-devices scope Max size for global variable 65536 (64KiB) Preferred total size of global vars 4294959104 (4GiB) Global Memory cache type Read/Write Global Memory cache size 2949120 (2.812MiB) Global Memory cache line size 64 bytes Image support Yes Max number of samplers per kernel 16 Max size for 1D images from buffer 268434944 pixels Max 1D or 2D image array size 2048 images Base address alignment for 2D image buffers 4 bytes Pitch alignment for 2D image buffers 4 pixels Max 2D image size 16384x16384 pixels Max planar YUV image size 16384x16352 pixels Max 3D image size 2048x2048x2048 pixels Max number of read image args 128 Max number of write image args 128 Max number of read/write image args 128 Pipe support No Max number of pipe args 0 Max active pipe reservations 0 Max pipe packet size 0 Local memory type Local Local memory size 65536 (64KiB) Max number of constant args 8 Max constant buffer size 4294959104 (4GiB) Generic address space support Yes Max size of kernel argument 2048 (2KiB) Queue properties (on host) Out-of-order execution Yes Profiling Yes Device enqueue capabilities (n/a) Queue properties (on device) Out-of-order execution No Profiling No Preferred size 0 Max size 0 Max queues on device 0 Max events on device 0 Prefer user sync for interop Yes Profiling timer resolution 52ns Execution capabilities Run OpenCL kernels Yes Run native kernels No Non-uniform work-groups Yes Work-group collective functions Yes Sub-group independent forward progress No IL version SPIR-V_1.2 ILs with version SPIR-V 0x402000 (1.2.0) SPIR versions 1.2 printf() buffer size 4194304 (4MiB) Built-in kernels (n/a) Built-in kernels with version (n/a) Device Extensions cl_khr_byte_addressable_store cl_khr_device_uuid cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_command_queue_families cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_subgroup_extended_types cl_khr_subgroup_non_uniform_vote cl_khr_subgroup_ballot cl_khr_subgroup_non_uniform_arithmetic cl_khr_subgroup_shuffle cl_khr_subgroup_shuffle_relative cl_khr_subgroup_clustered_reduce cl_intel_device_attribute_query cl_khr_suggested_local_work_size cl_intel_split_work_group_barrier cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_intel_planar_yuv cl_intel_packed_yuv cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_3d_image_writes cl_intel_media_block_io cl_intel_va_api_media_sharing cl_intel_sharing_format_query cl_khr_pci_bus_info cl_intel_subgroup_local_block_io Device Extensions with Version cl_khr_byte_addressable_store 0x400000 (1.0.0) cl_khr_device_uuid 0x400000 (1.0.0) cl_khr_fp16 0x400000 (1.0.0) cl_khr_global_int32_base_atomics 0x400000 (1.0.0) cl_khr_global_int32_extended_atomics 0x400000 (1.0.0) cl_khr_icd 0x400000 (1.0.0) cl_khr_local_int32_base_atomics 0x400000 (1.0.0) cl_khr_local_int32_extended_atomics 0x400000 (1.0.0) cl_intel_command_queue_families 0x400000 (1.0.0) cl_intel_subgroups 0x400000 (1.0.0) cl_intel_required_subgroup_size 0x400000 (1.0.0) cl_intel_subgroups_short 0x400000 (1.0.0) cl_khr_spir 0x400000 (1.0.0) cl_intel_accelerator 0x400000 (1.0.0) cl_intel_driver_diagnostics 0x400000 (1.0.0) cl_khr_priority_hints 0x400000 (1.0.0) cl_khr_throttle_hints 0x400000 (1.0.0) cl_khr_create_command_queue 0x400000 (1.0.0) cl_intel_subgroups_char 0x400000 (1.0.0) cl_intel_subgroups_long 0x400000 (1.0.0) cl_khr_il_program 0x400000 (1.0.0) cl_intel_mem_force_host_memory 0x400000 (1.0.0) cl_khr_subgroup_extended_types 0x400000 (1.0.0) cl_khr_subgroup_non_uniform_vote 0x400000 (1.0.0) cl_khr_subgroup_ballot 0x400000 (1.0.0) cl_khr_subgroup_non_uniform_arithmetic 0x400000 (1.0.0) cl_khr_subgroup_shuffle 0x400000 (1.0.0) cl_khr_subgroup_shuffle_relative 0x400000 (1.0.0) cl_khr_subgroup_clustered_reduce 0x400000 (1.0.0) cl_intel_device_attribute_query 0x400000 (1.0.0) cl_khr_suggested_local_work_size 0x400000 (1.0.0) cl_intel_split_work_group_barrier 0x400000 (1.0.0) cl_intel_spirv_media_block_io 0x400000 (1.0.0) cl_intel_spirv_subgroups 0x400000 (1.0.0) cl_khr_spirv_no_integer_wrap_decoration 0x400000 (1.0.0) cl_intel_unified_shared_memory 0x400000 (1.0.0) cl_khr_mipmap_image 0x400000 (1.0.0) cl_khr_mipmap_image_writes 0x400000 (1.0.0) cl_intel_planar_yuv 0x400000 (1.0.0) cl_intel_packed_yuv 0x400000 (1.0.0) cl_khr_int64_base_atomics 0x400000 (1.0.0) cl_khr_int64_extended_atomics 0x400000 (1.0.0) cl_khr_image2d_from_buffer 0x400000 (1.0.0) cl_khr_depth_images 0x400000 (1.0.0) cl_khr_3d_image_writes 0x400000 (1.0.0) cl_intel_media_block_io 0x400000 (1.0.0) cl_intel_va_api_media_sharing 0x400000 (1.0.0) cl_intel_sharing_format_query 0x400000 (1.0.0) cl_khr_pci_bus_info 0x400000 (1.0.0) cl_intel_subgroup_local_block_io 0x400000 (1.0.0) NULL platform behavior clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) No platform clCreateContext(NULL, ...) [default] No platform clCreateContext(NULL, ...) [other] Success [INTEL] clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1) Platform Name Intel(R) OpenCL HD Graphics Device Name Intel(R) Graphics [0x46a6] clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1) Platform Name Intel(R) OpenCL HD Graphics Device Name Intel(R) Graphics [0x46a6] 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 Intel(R) OpenCL HD Graphics Device Name Intel(R) Graphics [0x46a6]