hey, I am new to OPENCL. bumped into an issue when we try to leverage the GPU for some math operations (basically matrix multiplication).
following is my sample code,
char *allocptr = malloc(WIDTH*HEIGHT*2); cl_mem buffer = clImportMemoryARM(context,CL_MEM_READ_WRITE, NULL,allocp$ if (error ==CL_SUCCESS) { printf("sucess\n"); } else { printf("error %d\n.",error); }
the code can be compiled without any issue, however it through out error -6 at run time. Can anyone shed some lights here?
the CLINFO is pasted below as well.
firefly@firefly:~$ sudo clinfo -a Platform #0 Name: ARM Platform Vendor: ARM Version: OpenCL 1.2 v1.r14p0-01rel0-git(966ed26).f44c85cb3d2ceb87e8be88e7592755c3 Profile: FULL_PROFILE Extensions: 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_byte_addressable_store cl_khr_3d_image_writes cl_khr_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp16 cl_khr_gl_sharing cl_khr_icd cl_khr_egl_event cl_khr_egl_image cl_khr_image2d_from_buffer cl_arm_core_id cl_arm_printf cl_arm_thread_limit_hint cl_arm_non_uniform_work_group_size cl_arm_import_memory Device #0 Name: Mali-T860 Type: GPU Vendor: ARM Vendor ID: 140517376 Profile: FULL_PROFILE Available: Yes Version: OpenCL 1.2 v1.r14p0-01rel0-git(966ed26).f44c85cb3d2ceb87e8be88e7592755c3 Driver version: 1.2 Compiler available: Yes Address space size: 64 Little endian: Yes Error correction support: No Address alignment (bits): 1024 Smallest alignment (bytes): 128 Resolution of timer (ns): 1000 Max clock frequency (MHz): 200 Max compute units: 4 Max constant args: 8 Max constant buffer size: 64 kB Max mem alloc size: 489 MB 942 kB Max parameter size: 1024 Command-queue supported props: Out of order execution Profiling Execution capabilities: OpenCL kernels Global memory size: 1 GB 935 MB 696 kB Global memory cache size: 256 kB Global memory line cache size: 64 Local memory size: 32 kB Local memory type: Global Global memory cache type: Read write Max work group size: 256 Max work item dimensions: 3 Max work item sizes: (256, 256, 256) Image support: Yes Max 2D image height: 65536 Max 2D image width: 65536 Max 3D image depth: 65536 Max 3D image height: 65536 Max 3D image width: 65536 Max read image args: 128 Max write image args: 8 Max samplers: 16 Preferred vector width char: 16 Preferred vector width short: 8 Preferred vector width int: 4 Preferred vector width long: 2 Preferred vector width float: 4 Preferred vector width double: 2 Half precision float capability: Denorms Inf and NaNs Round to nearest even rounding mode Round to zero rounding mode Round to +ve and -ve infinity rounding modes IEEE754-2008 fused multiply-add Single precision float capability: Denorms Inf and NaNs Round to nearest even rounding mode Round to zero rounding mode Round to +ve and -ve infinity rounding modes IEEE754-2008 fused multiply-add Double precision float capability: Denorms Inf and NaNs Round to nearest even rounding mode Round to zero rounding mode Round to +ve and -ve infinity rounding modes IEEE754-2008 fused multiply-add Extensions: 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_byte_addressable_store cl_khr_3d_image_writes cl_khr_fp64 cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp16 cl_khr_gl_sharing cl_khr_icd cl_khr_egl_event cl_khr_egl_image cl_khr_image2d_from_buffer cl_arm_core_id cl_arm_printf cl_arm_thread_limit_hint cl_arm_non_uniform_work_group_size cl_arm_import_memory