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138 Module Documentation 4.28 Event Management Functions • CUresult cuEventCreate (CUevent ∗phEvent, unsigned int Flags) Creates an event. • CUresult cuEventDestroy (CUevent hEvent) Destroys an event. • CUresult cuEventElapsedTime (float ∗pMilliseconds, CUevent hStart, CUevent hEnd) Computes the elapsed time between two events. • CUresult cuEventQuery (CUevent hEvent) Queries an event’s status. • CUresult cuEventRecord (CUevent hEvent, CUstream hStream) Records an event. • CUresult cuEventSynchronize (CUevent hEvent) Waits for an event to complete. 4.28.1 Detailed Description This section describes the event management functions of the low-level CUDA driver application programming interface. 4.28.2 Function Documentation 4.28.2.1 cuEventCreate (CUevent ∗ phEvent, unsigned int Flags) Creates an event ∗phEvent with the flags specified via Flags. Valid flags include: • CU_EVENT_DEFAULT: Default event creation flag. • CU_EVENT_BLOCKING_SYNC: Specifies that event should use blocking synchronization. A CPU thread that uses cuEventSynchronize() to wait on an event created with this flag will block until the event has actually been recorded. Parameters: phEvent - Returns newly created event Flags - Event creation flags Returns: Note: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_- ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_OUT_OF_MEMORY Note that this function may also return error codes from previous, asynchronous launches. Generated for NVIDIA CUDA Library by Doxygen
4.28 Event Management 139 See also: cuEventRecord, cuEventQuery, cuEventSynchronize, cuEventDestroy, cuEventElapsedTime 4.28.2.2 cuEventDestroy (CUevent hEvent) Destroys the event specified by event. Parameters: hEvent - Event to destroy Returns: Note: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_- ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_HANDLE Note that this function may also return error codes from previous, asynchronous launches. See also: cuEventCreate, cuEventRecord, cuEventQuery, cuEventSynchronize, cuEventElapsedTime 4.28.2.3 cuEventElapsedTime (float ∗ pMilliseconds, CUevent hStart, CUevent hEnd) Computes the elapsed time between two events (in milliseconds with a resolution of around 0.5 microseconds). If either event has not been recorded yet, this function returns CUDA_ERROR_NOT_READY. If either event has been recorded with a non-zero stream, the result is undefined. Parameters: pMilliseconds - Returned elapsed time in milliseconds hStart - Starting event hEnd - Ending event Returns: Note: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_- ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_HANDLE, CUDA_ERROR_NOT_READY Note that this function may also return error codes from previous, asynchronous launches. See also: cuEventCreate, cuEventRecord, cuEventQuery, cuEventSynchronize, cuEventDestroy 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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188 Module Documentation 4.31.2.6 c
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190 Module Documentation Pitch - Li
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192 Module Documentation Parameters
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194 Module Documentation See also:
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196 Module Documentation 4.33 OpenG
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198 Module Documentation Parameters
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202 Module Documentation 4.34 Direc
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204 Module Documentation The Flags
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206 Module Documentation 4.35.2 Fun
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208 Module Documentation • Textur
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220 Module Documentation If pResour
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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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