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132 Module Documentationwhere:• Width, and Height are the width, and height of the CUDA array (in elements); the CUDA array is onedimensionalif height is 0, two-dimensional otherwise;• Format specifies the format of the elements; CUarray_format is defined as:typedef 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;Here are examples of CUDA array descriptions:Description for a CUDA array of 2048 floats:CUDA_ARRAY_DESCRIPTOR desc;desc.Format = CU_AD_FORMAT_FLOAT;desc.NumChannels = 1;desc.Width = 2048;desc.Height = 1;Description for a 64 x 64 CUDA array of floats:CUDA_ARRAY_DESCRIPTOR desc;desc.Format = CU_AD_FORMAT_FLOAT;desc.NumChannels = 1;desc.Width = 64;desc.Height = 64;Description for a width x height CUDA array of 64-bit, 4x16-bit float16’s:CUDA_ARRAY_DESCRIPTOR desc;desc.FormatFlags = CU_AD_FORMAT_HALF;desc.NumChannels = 4;desc.Width = width;desc.Height = height;Description for a width x height CUDA array of 16-bit elements, each of which is two 8-bit unsigned chars:CUDA_ARRAY_DESCRIPTOR arrayDesc;desc.FormatFlags = CU_AD_FORMAT_UNSIGNED_INTS;desc.NumChannels = 2;desc.Width = width;desc.Height = height;Parameters:pHandle - Returned arraypDesc - Array descriptorGenerated on Wed Apr 1 16:11:42 2009 for NVIDIA CUDA Library by Doxygen
3.25 Memory Management 133Returns: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_UNKNOWNSee also:Note that this function may also return error codes from previous, asynchronous launches.cuArray3DCreate, cuArray3DGetDescriptor, 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, cuMemsetD323.25.2.4 CUresult cuArrayDestroy (CUarray pArray)Destroys the CUDA array pArray.Parameters:pArray - Array to destroyReturns:Note:CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_-ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_HANDLE, CUDA_ERROR_ARRAY_IS_-MAPPEDSee also:Note that this function may also return error codes from previous, asynchronous launches.cuArray3DCreate, cuArray3DGetDescriptor, cuArrayCreate, 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, cuMemsetD323.25.2.5 CUresult cuArrayGetDescriptor (CUDA_ARRAY_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.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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viCONTENTS3.15.2.2 cudaComputeMode
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viiiCONTENTS3.24.2.11 cuParamSetv .
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xCONTENTS3.28.2.3 cuD3D9GetDirect3D
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224 INDEXCUDA_TYPES, 200CUctx_flags
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