diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/Gustav-Simonsson/go-opencl/cl/device.go')
| -rw-r--r-- | Godeps/_workspace/src/github.com/Gustav-Simonsson/go-opencl/cl/device.go | 510 |
1 files changed, 0 insertions, 510 deletions
diff --git a/Godeps/_workspace/src/github.com/Gustav-Simonsson/go-opencl/cl/device.go b/Godeps/_workspace/src/github.com/Gustav-Simonsson/go-opencl/cl/device.go deleted file mode 100644 index d62a6fb71..000000000 --- a/Godeps/_workspace/src/github.com/Gustav-Simonsson/go-opencl/cl/device.go +++ /dev/null @@ -1,510 +0,0 @@ -package cl - -// #ifdef __APPLE__ -// #include "OpenCL/opencl.h" -// #else -// #include "cl.h" -// #include "cl_ext.h" -// #endif -import "C" - -import ( - "strings" - "unsafe" -) - -const maxDeviceCount = 64 - -type DeviceType uint - -const ( - DeviceTypeCPU DeviceType = C.CL_DEVICE_TYPE_CPU - DeviceTypeGPU DeviceType = C.CL_DEVICE_TYPE_GPU - DeviceTypeAccelerator DeviceType = C.CL_DEVICE_TYPE_ACCELERATOR - DeviceTypeDefault DeviceType = C.CL_DEVICE_TYPE_DEFAULT - DeviceTypeAll DeviceType = C.CL_DEVICE_TYPE_ALL -) - -type FPConfig int - -const ( - FPConfigDenorm FPConfig = C.CL_FP_DENORM // denorms are supported - FPConfigInfNaN FPConfig = C.CL_FP_INF_NAN // INF and NaNs are supported - FPConfigRoundToNearest FPConfig = C.CL_FP_ROUND_TO_NEAREST // round to nearest even rounding mode supported - FPConfigRoundToZero FPConfig = C.CL_FP_ROUND_TO_ZERO // round to zero rounding mode supported - FPConfigRoundToInf FPConfig = C.CL_FP_ROUND_TO_INF // round to positive and negative infinity rounding modes supported - FPConfigFMA FPConfig = C.CL_FP_FMA // IEEE754-2008 fused multiply-add is supported - FPConfigSoftFloat FPConfig = C.CL_FP_SOFT_FLOAT // Basic floating-point operations (such as addition, subtraction, multiplication) are implemented in software -) - -var fpConfigNameMap = map[FPConfig]string{ - FPConfigDenorm: "Denorm", - FPConfigInfNaN: "InfNaN", - FPConfigRoundToNearest: "RoundToNearest", - FPConfigRoundToZero: "RoundToZero", - FPConfigRoundToInf: "RoundToInf", - FPConfigFMA: "FMA", - FPConfigSoftFloat: "SoftFloat", -} - -func (c FPConfig) String() string { - var parts []string - for bit, name := range fpConfigNameMap { - if c&bit != 0 { - parts = append(parts, name) - } - } - if parts == nil { - return "" - } - return strings.Join(parts, "|") -} - -func (dt DeviceType) String() string { - var parts []string - if dt&DeviceTypeCPU != 0 { - parts = append(parts, "CPU") - } - if dt&DeviceTypeGPU != 0 { - parts = append(parts, "GPU") - } - if dt&DeviceTypeAccelerator != 0 { - parts = append(parts, "Accelerator") - } - if dt&DeviceTypeDefault != 0 { - parts = append(parts, "Default") - } - if parts == nil { - parts = append(parts, "None") - } - return strings.Join(parts, "|") -} - -type Device struct { - id C.cl_device_id -} - -func buildDeviceIdList(devices []*Device) []C.cl_device_id { - deviceIds := make([]C.cl_device_id, len(devices)) - for i, d := range devices { - deviceIds[i] = d.id - } - return deviceIds -} - -// Obtain the list of devices available on a platform. 'platform' refers -// to the platform returned by GetPlatforms or can be nil. If platform -// is nil, the behavior is implementation-defined. -func GetDevices(platform *Platform, deviceType DeviceType) ([]*Device, error) { - var deviceIds [maxDeviceCount]C.cl_device_id - var numDevices C.cl_uint - var platformId C.cl_platform_id - if platform != nil { - platformId = platform.id - } - if err := C.clGetDeviceIDs(platformId, C.cl_device_type(deviceType), C.cl_uint(maxDeviceCount), &deviceIds[0], &numDevices); err != C.CL_SUCCESS { - return nil, toError(err) - } - if numDevices > maxDeviceCount { - numDevices = maxDeviceCount - } - devices := make([]*Device, numDevices) - for i := 0; i < int(numDevices); i++ { - devices[i] = &Device{id: deviceIds[i]} - } - return devices, nil -} - -func (d *Device) nullableId() C.cl_device_id { - if d == nil { - return nil - } - return d.id -} - -func (d *Device) GetInfoString(param C.cl_device_info, panicOnError bool) (string, error) { - var strC [1024]C.char - var strN C.size_t - if err := C.clGetDeviceInfo(d.id, param, 1024, unsafe.Pointer(&strC), &strN); err != C.CL_SUCCESS { - if panicOnError { - panic("Should never fail") - } - return "", toError(err) - } - - // OpenCL strings are NUL-terminated, and the terminator is included in strN - // Go strings aren't NUL-terminated, so subtract 1 from the length - return C.GoStringN((*C.char)(unsafe.Pointer(&strC)), C.int(strN-1)), nil -} - -func (d *Device) getInfoUint(param C.cl_device_info, panicOnError bool) (uint, error) { - var val C.cl_uint - if err := C.clGetDeviceInfo(d.id, param, C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), nil); err != C.CL_SUCCESS { - if panicOnError { - panic("Should never fail") - } - return 0, toError(err) - } - return uint(val), nil -} - -func (d *Device) getInfoSize(param C.cl_device_info, panicOnError bool) (int, error) { - var val C.size_t - if err := C.clGetDeviceInfo(d.id, param, C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), nil); err != C.CL_SUCCESS { - if panicOnError { - panic("Should never fail") - } - return 0, toError(err) - } - return int(val), nil -} - -func (d *Device) getInfoUlong(param C.cl_device_info, panicOnError bool) (int64, error) { - var val C.cl_ulong - if err := C.clGetDeviceInfo(d.id, param, C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), nil); err != C.CL_SUCCESS { - if panicOnError { - panic("Should never fail") - } - return 0, toError(err) - } - return int64(val), nil -} - -func (d *Device) getInfoBool(param C.cl_device_info, panicOnError bool) (bool, error) { - var val C.cl_bool - if err := C.clGetDeviceInfo(d.id, param, C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), nil); err != C.CL_SUCCESS { - if panicOnError { - panic("Should never fail") - } - return false, toError(err) - } - return val == C.CL_TRUE, nil -} - -func (d *Device) Name() string { - str, _ := d.GetInfoString(C.CL_DEVICE_NAME, true) - return str -} - -func (d *Device) Vendor() string { - str, _ := d.GetInfoString(C.CL_DEVICE_VENDOR, true) - return str -} - -func (d *Device) Extensions() string { - str, _ := d.GetInfoString(C.CL_DEVICE_EXTENSIONS, true) - return str -} - -func (d *Device) OpenCLCVersion() string { - str, _ := d.GetInfoString(C.CL_DEVICE_OPENCL_C_VERSION, true) - return str -} - -func (d *Device) Profile() string { - str, _ := d.GetInfoString(C.CL_DEVICE_PROFILE, true) - return str -} - -func (d *Device) Version() string { - str, _ := d.GetInfoString(C.CL_DEVICE_VERSION, true) - return str -} - -func (d *Device) DriverVersion() string { - str, _ := d.GetInfoString(C.CL_DRIVER_VERSION, true) - return str -} - -// The default compute device address space size specified as an -// unsigned integer value in bits. Currently supported values are 32 or 64 bits. -func (d *Device) AddressBits() int { - val, _ := d.getInfoUint(C.CL_DEVICE_ADDRESS_BITS, true) - return int(val) -} - -// Size of global memory cache line in bytes. -func (d *Device) GlobalMemCachelineSize() int { - val, _ := d.getInfoUint(C.CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE, true) - return int(val) -} - -// Maximum configured clock frequency of the device in MHz. -func (d *Device) MaxClockFrequency() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_CLOCK_FREQUENCY, true) - return int(val) -} - -// The number of parallel compute units on the OpenCL device. -// A work-group executes on a single compute unit. The minimum value is 1. -func (d *Device) MaxComputeUnits() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_COMPUTE_UNITS, true) - return int(val) -} - -// Max number of arguments declared with the __constant qualifier in a kernel. -// The minimum value is 8 for devices that are not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) MaxConstantArgs() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_CONSTANT_ARGS, true) - return int(val) -} - -// Max number of simultaneous image objects that can be read by a kernel. -// The minimum value is 128 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) MaxReadImageArgs() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_READ_IMAGE_ARGS, true) - return int(val) -} - -// Maximum number of samplers that can be used in a kernel. The minimum -// value is 16 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. (Also see sampler_t.) -func (d *Device) MaxSamplers() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_SAMPLERS, true) - return int(val) -} - -// Maximum dimensions that specify the global and local work-item IDs used -// by the data parallel execution model. (Refer to clEnqueueNDRangeKernel). -// The minimum value is 3 for devices that are not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) MaxWorkItemDimensions() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, true) - return int(val) -} - -// Max number of simultaneous image objects that can be written to by a -// kernel. The minimum value is 8 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) MaxWriteImageArgs() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MAX_WRITE_IMAGE_ARGS, true) - return int(val) -} - -// The minimum value is the size (in bits) of the largest OpenCL built-in -// data type supported by the device (long16 in FULL profile, long16 or -// int16 in EMBEDDED profile) for devices that are not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) MemBaseAddrAlign() int { - val, _ := d.getInfoUint(C.CL_DEVICE_MEM_BASE_ADDR_ALIGN, true) - return int(val) -} - -func (d *Device) NativeVectorWidthChar() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR, true) - return int(val) -} - -func (d *Device) NativeVectorWidthShort() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT, true) - return int(val) -} - -func (d *Device) NativeVectorWidthInt() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_INT, true) - return int(val) -} - -func (d *Device) NativeVectorWidthLong() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG, true) - return int(val) -} - -func (d *Device) NativeVectorWidthFloat() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT, true) - return int(val) -} - -func (d *Device) NativeVectorWidthDouble() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE, true) - return int(val) -} - -func (d *Device) NativeVectorWidthHalf() int { - val, _ := d.getInfoUint(C.CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF, true) - return int(val) -} - -// Max height of 2D image in pixels. The minimum value is 8192 -// if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) Image2DMaxHeight() int { - val, _ := d.getInfoSize(C.CL_DEVICE_IMAGE2D_MAX_HEIGHT, true) - return int(val) -} - -// Max width of 2D image or 1D image not created from a buffer object in -// pixels. The minimum value is 8192 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) Image2DMaxWidth() int { - val, _ := d.getInfoSize(C.CL_DEVICE_IMAGE2D_MAX_WIDTH, true) - return int(val) -} - -// Max depth of 3D image in pixels. The minimum value is 2048 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) Image3DMaxDepth() int { - val, _ := d.getInfoSize(C.CL_DEVICE_IMAGE3D_MAX_DEPTH, true) - return int(val) -} - -// Max height of 3D image in pixels. The minimum value is 2048 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) Image3DMaxHeight() int { - val, _ := d.getInfoSize(C.CL_DEVICE_IMAGE3D_MAX_HEIGHT, true) - return int(val) -} - -// Max width of 3D image in pixels. The minimum value is 2048 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. -func (d *Device) Image3DMaxWidth() int { - val, _ := d.getInfoSize(C.CL_DEVICE_IMAGE3D_MAX_WIDTH, true) - return int(val) -} - -// Max size in bytes of the arguments that can be passed to a kernel. The -// minimum value is 1024 for devices that are not of type CL_DEVICE_TYPE_CUSTOM. -// For this minimum value, only a maximum of 128 arguments can be passed to a kernel. -func (d *Device) MaxParameterSize() int { - val, _ := d.getInfoSize(C.CL_DEVICE_MAX_PARAMETER_SIZE, true) - return int(val) -} - -// Maximum number of work-items in a work-group executing a kernel on a -// single compute unit, using the data parallel execution model. (Refer -// to clEnqueueNDRangeKernel). The minimum value is 1. -func (d *Device) MaxWorkGroupSize() int { - val, _ := d.getInfoSize(C.CL_DEVICE_MAX_WORK_GROUP_SIZE, true) - return int(val) -} - -// Describes the resolution of device timer. This is measured in nanoseconds. -func (d *Device) ProfilingTimerResolution() int { - val, _ := d.getInfoSize(C.CL_DEVICE_PROFILING_TIMER_RESOLUTION, true) - return int(val) -} - -// Size of local memory arena in bytes. The minimum value is 32 KB for -// devices that are not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) LocalMemSize() int64 { - val, _ := d.getInfoUlong(C.CL_DEVICE_LOCAL_MEM_SIZE, true) - return val -} - -// Max size in bytes of a constant buffer allocation. The minimum value is -// 64 KB for devices that are not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) MaxConstantBufferSize() int64 { - val, _ := d.getInfoUlong(C.CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE, true) - return val -} - -// Max size of memory object allocation in bytes. The minimum value is max -// (1/4th of CL_DEVICE_GLOBAL_MEM_SIZE, 128*1024*1024) for devices that are -// not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) MaxMemAllocSize() int64 { - val, _ := d.getInfoUlong(C.CL_DEVICE_MAX_MEM_ALLOC_SIZE, true) - return val -} - -// Size of global device memory in bytes. -func (d *Device) GlobalMemSize() int64 { - val, _ := d.getInfoUlong(C.CL_DEVICE_GLOBAL_MEM_SIZE, true) - return val -} - -func (d *Device) Available() bool { - val, _ := d.getInfoBool(C.CL_DEVICE_AVAILABLE, true) - return val -} - -func (d *Device) CompilerAvailable() bool { - val, _ := d.getInfoBool(C.CL_DEVICE_COMPILER_AVAILABLE, true) - return val -} - -func (d *Device) EndianLittle() bool { - val, _ := d.getInfoBool(C.CL_DEVICE_ENDIAN_LITTLE, true) - return val -} - -// Is CL_TRUE if the device implements error correction for all -// accesses to compute device memory (global and constant). Is -// CL_FALSE if the device does not implement such error correction. -func (d *Device) ErrorCorrectionSupport() bool { - val, _ := d.getInfoBool(C.CL_DEVICE_ERROR_CORRECTION_SUPPORT, true) - return val -} - -func (d *Device) HostUnifiedMemory() bool { - val, _ := d.getInfoBool(C.CL_DEVICE_HOST_UNIFIED_MEMORY, true) - return val -} - -func (d *Device) ImageSupport() bool { - val, _ := d.getInfoBool(C.CL_DEVICE_IMAGE_SUPPORT, true) - return val -} - -func (d *Device) Type() DeviceType { - var deviceType C.cl_device_type - if err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_TYPE, C.size_t(unsafe.Sizeof(deviceType)), unsafe.Pointer(&deviceType), nil); err != C.CL_SUCCESS { - panic("Failed to get device type") - } - return DeviceType(deviceType) -} - -// Describes double precision floating-point capability of the OpenCL device -func (d *Device) DoubleFPConfig() FPConfig { - var fpConfig C.cl_device_fp_config - if err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_DOUBLE_FP_CONFIG, C.size_t(unsafe.Sizeof(fpConfig)), unsafe.Pointer(&fpConfig), nil); err != C.CL_SUCCESS { - panic("Failed to get double FP config") - } - return FPConfig(fpConfig) -} - -// Describes the OPTIONAL half precision floating-point capability of the OpenCL device -func (d *Device) HalfFPConfig() FPConfig { - var fpConfig C.cl_device_fp_config - err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_HALF_FP_CONFIG, C.size_t(unsafe.Sizeof(fpConfig)), unsafe.Pointer(&fpConfig), nil) - if err != C.CL_SUCCESS { - return FPConfig(0) - } - return FPConfig(fpConfig) -} - -// Type of local memory supported. This can be set to CL_LOCAL implying dedicated -// local memory storage such as SRAM, or CL_GLOBAL. For custom devices, CL_NONE -// can also be returned indicating no local memory support. -func (d *Device) LocalMemType() LocalMemType { - var memType C.cl_device_local_mem_type - if err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_LOCAL_MEM_TYPE, C.size_t(unsafe.Sizeof(memType)), unsafe.Pointer(&memType), nil); err != C.CL_SUCCESS { - return LocalMemType(C.CL_NONE) - } - return LocalMemType(memType) -} - -// Describes the execution capabilities of the device. The mandated minimum capability is CL_EXEC_KERNEL. -func (d *Device) ExecutionCapabilities() ExecCapability { - var execCap C.cl_device_exec_capabilities - if err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_EXECUTION_CAPABILITIES, C.size_t(unsafe.Sizeof(execCap)), unsafe.Pointer(&execCap), nil); err != C.CL_SUCCESS { - panic("Failed to get execution capabilities") - } - return ExecCapability(execCap) -} - -func (d *Device) GlobalMemCacheType() MemCacheType { - var memType C.cl_device_mem_cache_type - if err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_GLOBAL_MEM_CACHE_TYPE, C.size_t(unsafe.Sizeof(memType)), unsafe.Pointer(&memType), nil); err != C.CL_SUCCESS { - return MemCacheType(C.CL_NONE) - } - return MemCacheType(memType) -} - -// Maximum number of work-items that can be specified in each dimension of the work-group to clEnqueueNDRangeKernel. -// -// Returns n size_t entries, where n is the value returned by the query for CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS. -// -// The minimum value is (1, 1, 1) for devices that are not of type CL_DEVICE_TYPE_CUSTOM. -func (d *Device) MaxWorkItemSizes() []int { - dims := d.MaxWorkItemDimensions() - sizes := make([]C.size_t, dims) - if err := C.clGetDeviceInfo(d.id, C.CL_DEVICE_MAX_WORK_ITEM_SIZES, C.size_t(int(unsafe.Sizeof(sizes[0]))*dims), unsafe.Pointer(&sizes[0]), nil); err != C.CL_SUCCESS { - panic("Failed to get max work item sizes") - } - intSizes := make([]int, dims) - for i, s := range sizes { - intSizes[i] = int(s) - } - return intSizes -} |