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116 Module Documentation3.23 Event ManagementFunctions• CUresult cuEventCreate (CUevent ∗ppEvent, 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.3.23.1 Detailed DescriptionThis section describes the event management functions of the low-level CUDA driver application programming interface.3.23.2 Function Documentation3.23.2.1 CUresult cuEventCreate (CUevent ∗ ppEvent, unsigned int Flags)Creates an event ∗ppEvent 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 synchronizationParameters:ppEvent - Returns newly created eventFlags - Event creation flagsReturns:Note:CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_-ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_OUT_OF_MEMORYNote 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
3.23 Event Management 117See also:cuEventRecord, cuEventQuery, cuEventSynchronize, cuEventDestroy, cuEventElapsedTime3.23.2.2 CUresult cuEventDestroy (CUevent hEvent)Destroys the event specified by event.Parameters:hEvent - Event to destroyReturns:Note:CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_-ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_HANDLENote that this function may also return error codes from previous, asynchronous launches.See also:cuEventCreate, cuEventRecord, cuEventQuery, cuEventSynchronize, cuEventElapsedTime3.23.2.3 CUresult cuEventElapsedTime (float ∗ pMilliseconds, CUevent hStart, CUevent hEnd)Computes the elapsed time between two events (in milliseconds with a resolution of around 0.5 microseconds). Ifeither event has not been recorded yet, this function returns CUDA_ERROR_NOT_READY. If either event has beenrecorded with a non-zero stream, the result is undefined.Parameters:pMilliseconds - Returned elapsed time in millisecondshStart - Starting eventhEnd - Ending eventReturns:Note:CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_-ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_HANDLE, CUDA_ERROR_NOT_READYNote that this function may also return error codes from previous, asynchronous launches.See also:cuEventCreate, cuEventRecord, cuEventQuery, cuEventSynchronize, cuEventDestroyGenerated 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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NoticeALL NVIDIA DESIGN SPECIFICATI
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