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opencl-1-2-quick-reference-card PDF 下载
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The OpenCL Platform Layer
The OpenCL platform layer implements platform-specific
features that allow applications to query OpenCL devices,
device configuration information, and to create OpenCL
contexts using one or more devices.
Querying Platform Info and Devices [4.1, 4.2]
cl_int clGetPlatformIDs (cl_uint num_entries, cl_platform_id *platforms, cl_uint *num_platforms)
cl_int clGetPlatformInfo (cl_platform_id platform, cl_platform_info param_name, size_t param_value_size, void *param_value, size_t *param_value_size_ret)
param_name: CL_PLATFORM_{PROFILE, VERSION},
CL_PLATFORM_{NAME, VENDOR, EXTENSIONS}
cl_int clGetDeviceIDs (cl_platform_id platform, cl_device_type device_type, cl_uint num_entries, cl_device_id *devices, cl_uint *num_devices)
device_type: CL_DEVICE_TYPE_{ACCELERATOR, ALL, CPU},
CL_DEVICE_TYPE_{CUSTOM, DEFAULT, GPU}
cl_int clGetDeviceInfo (cl_device_id device, cl_device_info param_name, size_t param_value_size, void *param_value, size_t *param_value_size_ret)
param_name:
CL_DEVICE_{NAME, VENDOR, PROFILE, TYPE},
CL_DEVICE_NATIVE_VECTOR_WIDTH_{CHAR, INT},
CL_DEVICE_NATIVE_VECTOR_WIDTH_{LONG, SHORT},
CL_DEVICE_NATIVE_VECTOR_WIDTH_{DOUBLE, HALF},
CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT,
CL_DEVICE_PREFERRED_VECTOR_WIDTH_{CHAR, INT},
CL_DEVICE_PREFERRED_VECTOR_WIDTH_{LONG, SHORT},
CL_DEVICE_PREFERRED_VECTOR_WIDTH_{DOUBLE, HALF},
CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT,
CL_DEVICE_PREFERRED_INTEROP_USER_SYNC,
CL_DEVICE_ADDRESS_BITS, CL_DEVICE_AVAILABLE,
CL_DEVICE_BUILT_IN_KERNELS,
CL_DEVICE_COMPILER_AVAILABLE,
CL_DEVICE_{DOUBLE, HALF, SINGLE}_FP_CONFIG,
CL_DEVICE_ENDIAN_LITTLE, CL_DEVICE_EXTENSIONS,
CL_DEVICE_ERROR_CORRECTION_SUPPORT,
CL_DEVICE_EXECUTION_CAPABILITIES,
CL_DEVICE_GLOBAL_MEM_CACHE_{SIZE, TYPE},
CL_DEVICE_GLOBAL_MEM_{CACHELINE_SIZE, SIZE},
CL_DEVICE_HOST_UNIFIED_MEMORY,
CL_DEVICE_IMAGE_MAX_{ARRAY, BUFFER}_SIZE,
CL_DEVICE_IMAGE_SUPPORT,
CL_DEVICE_IMAGE2D_MAX_{WIDTH, HEIGHT},
CL_DEVICE_IMAGE3D_MAX_{WIDTH, HEIGHT, DEPTH},
CL_DEVICE_LOCAL_MEM_{TYPE, SIZE},
CL_DEVICE_MAX_{READ, WRITE}_IMAGE_ARGS,
CL_DEVICE_MAX_CLOCK_FREQUENCY,
CL_DEVICE_MAX_COMPUTE_UNITS,
CL_DEVICE_MAX_CONSTANT_{ARGS,BUFFER_SIZE},
CL_DEVICE_MAX_{MEM_ALLOC, PARAMETER}_SIZE,
CL_DEVICE_MAX_SAMPLERS,
CL_DEVICE_MAX_WORK_GROUP_SIZE,
CL_DEVICE_MAX_WORK_ITEM_{DIMENSIONS, SIZES},
CL_DEVICE_MEM_BASE_ADDR_ALIGN,
CL_DEVICE_OPENCL_C_VERSION, CL_DEVICE_PARENT_DEVICE,
CL_DEVICE_PARTITION_AFFINITY_DOMAIN,
CL_DEVICE_PARTITION_MAX_SUB_DEVICES,
CL_DEVICE_PARTITION_{PROPERTIES, TYPE},
CL_DEVICE_PLATFORM, CL_DEVICE_PRINTF_BUFFER_SIZE,
CL_DEVICE_PROFILING_TIMER_RESOLUTION,
CL_DEVICE_QUEUE_PROPERTIES,
CL_DEVICE_REFERENCE_COUNT,
CL_DEVICE_VENDOR_ID, CL_{DEVICE, DRIVER}_VERSION
Partitioning a Device [4.3]
cl_int clCreateSubDevices (cl_device_id in_device,
const cl_device_partition_property *properties,
cl_uint num_devices, cl_device_id *out_devices, cl_uint *num_devices_ret)
properties: CL_DEVICE_PARTITION_EQUALLY,
CL_DEVICE_PARTITION_BY_{COUNTS, AFFINITY_DOMAIN}
(Affinity domains may be:
CL_DEVICE_AFFINITY_DOMAIN_NUMA,
CL_DEVICE_AFFINITY_DOMAIN_{L4, L3, L2, L1}_CACHE,
CL_DEVICE_AFFINITY_DOMAIN_NEXT_PARTITIONABLE)
cl_int clRetainDevice (cl_device_id device)
cl_int clReleaseDevice (cl_device_id device)
Contexts [4.4]
cl_context clCreateContext (
const cl_context_properties *properties, cl_uint num_devices, const cl_device_id *devices, void (CL_CALLBACK*pfn_notify)
(const char *errinfo, const void *private_info, size_t cb, void *user_data),
void *user_data, cl_int *errcode_ret)
properties: NULL or CL_CONTEXT_PLATFORM,
CL_CONTEXT_INTEROP_USER_SYNC,
CL_CONTEXT_{D3D10, D3D11}_DEVICE_KHR,
CL_CONTEXT_ADAPTER_{D3D9, D3D9EX, DXVA}_KHR,
CL_GL_CONTEXT_KHR, CL_CGL_SHAREGROUP_KHR,
CL_{EGL, GLX}_DISPLAY_KHR, CL_WGL_HDC_KHR
cl_context clCreateContextFromType (
const cl_context_properties *properties, cl_device_type device_type, void (CL_CALLBACK *pfn_notify)
(const char *errinfo, const void *private_info, size_t cb, void *user_data),
void *user_data, cl_int *errcode_ret)
properties: See clCreateContext
cl_int clRetainContext (cl_context context)
cl_int clReleaseContext (cl_context context)
cl_int clGetContextInfo (cl_context context, cl_context_info param_name, size_t param_value_size, void *param_value, size_t *param_value_size_ret)
param_name: CL_CONTEXT_REFERENCE_COUNT,
CL_CONTEXT_{DEVICES, NUM_DEVICES, PROPERTIES},
CL_CONTEXT_D3D10_PREFER_SHARED_RESOURCES_KHR,
CL_CONTEXT_D3D11_PREFER_SHARED_RESOURCES_KHR
Get CL Extension Function Pointers [9.2]
void* clGetExtensionFunctionAddressForPlatform (
cl_platform_id platform, const char *funcname)
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