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156 Module Documentation 4.30.2.5 cuArrayGetDescriptor (CUDA_ARRAY_DESCRIPTOR ∗ pArrayDescriptor, CUarray hArray) Returns in ∗pArrayDescriptor 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 for validation or other purposes. Parameters: pArrayDescriptor - Returned array descriptor hArray - Array to get descriptor of Returns: Note: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_- ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_INVALID_HANDLE See also: Note that this function may also return error codes from previous, asynchronous launches. cuArray3DCreate, cuArray3DGetDescriptor, cuArrayCreate, cuArrayDestroy, cuMemAlloc, cuMemAllocHost, cuMemAllocPitch, cuMemcpy2D, cuMemcpy2DAsync, cuMemcpy2DUnaligned, cuMemcpy3D, cuMemcpy3DAsync, cuMemcpyAtoA, cuMemcpyAtoD, cuMemcpyAtoH, cuMemcpyAtoHAsync, cuMemcpyDtoA, cuMemcpyDtoD, cuMemcpyDtoDAsync, cuMemcpyDtoH, cuMemcpyDtoHAsync, cuMemcpyHtoA, cuMemcpyHtoAAsync, cuMemcpyHtoD, cuMemcpyHtoDAsync, cuMemFree, cuMemFreeHost, cuMemGetAddress- Range, cuMemGetInfo, cuMemHostAlloc, cuMemHostGetDevicePointer, cuMemsetD2D8, cuMemsetD2D16, cuMemsetD2D32, cuMemsetD8, cuMemsetD16, cuMemsetD32 4.30.2.6 cuMemAlloc (CUdeviceptr ∗ dptr, unsigned int bytesize) Allocates bytesize bytes of linear memory on the device and returns in ∗dptr a pointer to the allocated memory. The allocated memory is suitably aligned for any kind of variable. The memory is not cleared. If bytesize is 0, cuMemAlloc() returns CUDA_ERROR_INVALID_VALUE. Parameters: dptr - Returned device pointer bytesize - Requested allocation size in bytes Returns: Note: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_- ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_OUT_OF_MEMORY See also: Note that this function may also return error codes from previous, asynchronous launches. cuArray3DCreate, cuArray3DGetDescriptor, cuArrayCreate, cuArrayDestroy, cuArrayGetDescriptor, cuMemAllocHost, cuMemAllocPitch, cuMemcpy2D, cuMemcpy2DAsync, cuMemcpy2DUnaligned, cuMemcpy3D, cuMemcpy3DAsync, cuMemcpyAtoA, cuMemcpyAtoD, cuMemcpyAtoH, cuMemcpyAtoHAsync, cuMemcpy- DtoA, cuMemcpyDtoD, cuMemcpyDtoDAsync, cuMemcpyDtoH, cuMemcpyDtoHAsync, cuMemcpyHtoA, Generated for NVIDIA CUDA Library by Doxygen
4.30 Memory Management 157 cuMemcpyHtoAAsync, cuMemcpyHtoD, cuMemcpyHtoDAsync, cuMemFree, cuMemFreeHost, cuMemGetAddressRange, cuMemGetInfo, cuMemHostAlloc, cuMemHostGetDevicePointer, cuMemsetD2D8, cuMemsetD2D16, cuMemsetD2D32, cuMemsetD8, cuMemsetD16, cuMemsetD32 4.30.2.7 cuMemAllocHost (void ∗∗ pp, unsigned int bytesize) Allocates bytesize bytes of host memory that is page-locked and accessible to the device. The driver tracks the virtual memory ranges allocated with this function and automatically accelerates calls to functions such as cuMemcpy(). Since the memory can be accessed directly by the device, it can be read or written with much higher bandwidth than pageable memory obtained with functions such as malloc(). Allocating excessive amounts of memory with cuMemAllocHost() may degrade system performance, since it reduces the amount of memory available to the system for paging. As a result, this function is best used sparingly to allocate staging areas for data exchange between host and device. Parameters: pp - Returned host pointer to page-locked memory bytesize - Requested allocation size in bytes Returns: Note: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_- ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_OUT_OF_MEMORY See also: Note that this function may also return error codes from previous, asynchronous launches. cuArray3DCreate, cuArray3DGetDescriptor, cuArrayCreate, cuArrayDestroy, cuArrayGetDescriptor, cuMemAlloc, cuMemAllocPitch, cuMemcpy2D, cuMemcpy2DAsync, cuMemcpy2DUnaligned, cuMemcpy3D, cuMemcpy3DAsync, cuMemcpyAtoA, cuMemcpyAtoD, cuMemcpyAtoH, cuMemcpyAtoHAsync, cuMemcpyDtoA, cuMemcpyDtoD, cuMemcpyDtoDAsync, cuMemcpyDtoH, cuMemcpyDtoHAsync, cuMemcpyHtoA, cuMemcpyHtoAAsync, cuMemcpyHtoD, cuMemcpyHtoDAsync, cuMemFree, cuMemFreeHost, cuMemGetAddress- Range, cuMemGetInfo, cuMemHostAlloc, cuMemHostGetDevicePointer, cuMemsetD2D8, cuMemsetD2D16, cuMemsetD2D32, cuMemsetD8, cuMemsetD16, cuMemsetD32 4.30.2.8 cuMemAllocPitch (CUdeviceptr ∗ dptr, unsigned int ∗ pPitch, unsigned int WidthInBytes, unsigned int Height, unsigned int ElementSizeBytes) Allocates at least WidthInBytes ∗ Height bytes of linear memory on the device and returns in ∗dptr a pointer to the allocated memory. The function may pad the allocation to ensure that corresponding pointers in any given row will continue to meet the alignment requirements for coalescing as the address is updated from row to row. ElementSizeBytes specifies the size of the largest reads and writes that will be performed on the memory range. ElementSizeBytes may be 4, 8 or 16 (since coalesced memory transactions are not possible on other data sizes). If ElementSizeBytes is smaller than the actual read/write size of a kernel, the kernel will run correctly, but possibly at reduced speed. The pitch returned in ∗pPitch by cuMemAllocPitch() is the width in bytes of the allocation. The intended usage of pitch is as a separate parameter of the allocation, used to compute addresses within the 2D array. Given the row and column of an array element of type T, the address is computed as: T* pElement = (T*)((char*)BaseAddress + Row * Pitch) + Column; Generated for NVIDIA CUDA Library by Doxygen
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NVIDIA CUDA Reference Manual Versio
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ii CONTENTS 4.4.2.6 cudaSetDeviceFl
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iv CONTENTS 4.9.2 Function Document
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vi CONTENTS 4.17.2.3 cudaBindTextur
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viii CONTENTS 4.26.2.2 cuModuleGetG
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x CONTENTS 4.30.2.35 cuMemsetD2D16
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xii CONTENTS 4.37.2.5 cuD3D10Resour
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xiv CONTENTS 5.3 CUDA_MEMCPY2D_st S
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2 Deprecated List Global cudaD3D9Re
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4 Deprecated List Global cuD3D10Res
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6 Module Index Direct3D 9 Interoper
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8 Data Structure Index Generated fo
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10 Module Documentation 4.2 Thread
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12 Module Documentation Note: Note
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14 Module Documentation 4.4.2.2 cud
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16 Module Documentation Parameters:
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18 Module Documentation 4.5 Stream
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20 Module Documentation 4.6 Event M
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24 Module Documentation 4.7 Executi
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28 Module Documentation 4.8 Memory
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30 Module Documentation • cudaErr
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32 Module Documentation Returns: No
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36 Module Documentation struct cuda
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38 Module Documentation 4.8.2.14 cu
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42 Module Documentation Returns: No
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46 Module Documentation See also: c
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48 Module Documentation kind - Type
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50 Module Documentation hOffset - S
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52 Module Documentation src - Sourc
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54 Module Documentation IMPORTANT N
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58 Module Documentation 4.9 OpenGL
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60 Module Documentation target - Id
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62 Module Documentation Returns: cu
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66 Module Documentation 4.11 Direct
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68 Module Documentation • The pri
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70 Module Documentation 4.12.2 Func
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72 Module Documentation flags - Par
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74 Module Documentation If pResourc
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76 Module Documentation • cudaD3D
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78 Module Documentation 4.13 Direct
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80 Module Documentation • Resourc
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82 Module Documentation Maps the co
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92 Module Documentation 4.16 Graphi
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94 Module Documentation • cudaGra
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96 Module Documentation 4.17 Textur
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98 Module Documentation Note: See a
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100 Module Documentation See also:
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102 Module Documentation 4.19 C++ A
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104 Module Documentation 4.19.2.2 t
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206 Module Documentation 4.35.2 Fun
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208 Module Documentation • Textur
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210 Module Documentation 4.35.2.6 c
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214 Module Documentation 4.36 Direc
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216 Module Documentation • CU_GRA
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222 Module Documentation 4.37.2.6 c
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226 Module Documentation 4.38 Direc
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228 Module Documentation Not all Di
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230 Module Documentation resources
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232 Module Documentation Returns: N
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234 Module Documentation 4.40 Data
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236 Module Documentation • enum C
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238 Module Documentation • typede
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240 Module Documentation 4.40.2.3 t
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242 Module Documentation 4.40.3.3 e
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244 Module Documentation CU_DEVICE_
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246 Module Documentation Enumerator
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248 Data Structure Documentation 5.
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252 Data Structure Documentation So
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Index C++ API Routines, 102 Context
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264 INDEX CUDA_TYPES, 239 CU_MEMHOS
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266 INDEX CUDA_ERROR_UNMAP_FAILED C
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268 INDEX CUDA_TYPES, 239 cudaBindT
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270 INDEX cudaGetLastError CUDART_E
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272 INDEX cudaGraphicsRegisterFlags
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274 INDEX CUdevice_attribute CUDA_T
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276 INDEX CUMEM, 164 cuMemcpy3DAsyn
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Notice ALL NVIDIA DESIGN SPECIFICAT
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