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130 Module Documentationtypedef enum CUarray_format_enum {CU_AD_FORMAT_UNSIGNED_INT8 = 0x01,CU_AD_FORMAT_UNSIGNED_INT16 = 0x02,CU_AD_FORMAT_UNSIGNED_INT32 = 0x03,CU_AD_FORMAT_SIGNED_INT8 = 0x08,CU_AD_FORMAT_SIGNED_INT16 = 0x09,CU_AD_FORMAT_SIGNED_INT32 = 0x0a,CU_AD_FORMAT_HALF = 0x10,CU_AD_FORMAT_FLOAT = 0x20} CUarray_format;• NumChannels specifies the number of packed components per CUDA array element; it may be 1, 2, or 4;• Flags provides for future features. For now, it must be set to 0.Here are examples of CUDA array descriptions:Description for a CUDA array of 2048 floats:CUDA_ARRAY3D_DESCRIPTOR desc;desc.Format = CU_AD_FORMAT_FLOAT;desc.NumChannels = 1;desc.Width = 2048;desc.Height = 0;desc.Depth = 0;Description for a 64 x 64 CUDA array of floats:CUDA_ARRAY3D_DESCRIPTOR desc;desc.Format = CU_AD_FORMAT_FLOAT;desc.NumChannels = 1;desc.Width = 64;desc.Height = 64;desc.Depth = 0;Description for a width x height x depth CUDA array of 64-bit, 4x16-bit float16’s:CUDA_ARRAY3D_DESCRIPTOR desc;desc.FormatFlags = CU_AD_FORMAT_HALF;desc.NumChannels = 4;desc.Width = width;desc.Height = height;desc.Depth = depth;Parameters:pHandle - Returned arraypDesc - 3D array descriptorReturns:Note:CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_-ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_OUT_OF_MEMORY,CUDA_ERROR_UNKNOWNNote that this function may also return error codes from previous, asynchronous launches.Generated on Wed Apr 1 16:11:42 2009 for NVIDIA CUDA Library by Doxygen
3.25 Memory Management 131See also:cuArray3DGetDescriptor, cuArrayCreate, cuArrayDestroy, cuArrayGetDescriptor, cuMemAlloc, cuMemAllocHost,cuMemAllocPitch, cuMemcpy2D, cuMemcpy2DAsync, cuMemcpy2DUnaligned, cuMemcpy3D,cuMemcpy3DAsync, cuMemcpyAtoA, cuMemcpyAtoD, cuMemcpyAtoH, cuMemcpyAtoHAsync, cuMemcpy-DtoA, cuMemcpyDtoD, cuMemcpyDtoH, cuMemcpyDtoHAsync, cuMemcpyHtoA, cuMemcpyHtoAAsync,cuMemcpyHtoD, cuMemcpyHtoDAsync, cuMemFree, cuMemFreeHost, cuMemGetAddressRange, cuMemGet-Info, cuMemHostAlloc, cuMemHostGetDevicePointer, cuMemsetD2D8, cuMemsetD2D16, cuMemsetD2D32,cuMemsetD8, cuMemsetD16, cuMemsetD323.25.2.2 CUresult cuArray3DGetDescriptor (CUDA_ARRAY3D_DESCRIPTOR ∗ pDesc, CUarray hArray)Returns in ∗pDesc a descriptor containing information on the format and dimensions of the CUDA array hArray.It is useful for subroutines that have been passed a CUDA array, but need to know the CUDA array parameters forvalidation or other purposes.This function may be called on 1D and 2D arrays, in which case the Height and/or Depth members of the descriptorstruct will be set to 0.Parameters:pDesc - Returned 3D array descriptorhArray - 3D array to get descriptor ofReturns:Note:CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_-ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_INVALID_HANDLESee also:Note that this function may also return error codes from previous, asynchronous launches.cuArray3DCreate, cuArrayCreate, cuArrayDestroy, cuArrayGetDescriptor, cuMemAlloc, cuMemAllocHost,cuMemAllocPitch, cuMemcpy2D, cuMemcpy2DAsync, cuMemcpy2DUnaligned, cuMemcpy3D, cuMemcpy3DAsync,cuMemcpyAtoA, cuMemcpyAtoD, cuMemcpyAtoH, cuMemcpyAtoHAsync, cuMemcpyDtoA,cuMemcpyDtoD, cuMemcpyDtoH, cuMemcpyDtoHAsync, cuMemcpyHtoA, cuMemcpyHtoAAsync,cuMemcpyHtoD, cuMemcpyHtoDAsync, cuMemFree, cuMemFreeHost, cuMemGetAddressRange, cuMemGet-Info, cuMemHostAlloc, cuMemHostGetDevicePointer, cuMemsetD2D8, cuMemsetD2D16, cuMemsetD2D32,cuMemsetD8, cuMemsetD16, cuMemsetD323.25.2.3 CUresult cuArrayCreate (CUarray ∗ pHandle, const CUDA_ARRAY_DESCRIPTOR ∗ pDesc)Creates a CUDA array according to the CUDA_ARRAY_DESCRIPTOR structure pDesc and returns a handle to thenew CUDA array in ∗pHandle. The CUDA_ARRAY_DESCRIPTOR is defined as:typedef struct {unsigned int Width;unsigned int Height;CUarray_format Format;unsigned int NumChannels;} CUDA_ARRAY_DESCRIPTOR;Generated on Wed Apr 1 16:11:42 2009 for NVIDIA CUDA Library by Doxygen
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NVIDIA CUDAReference ManualVersion
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iiCONTENTS3.5 Stream Management . .
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ivCONTENTS3.10 Direct3D 9 Interoper
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