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20 Module Documentation3.7 Execution ControlFunctions• cudaError_t cudaConfigureCall (dim3 gridDim, dim3 blockDim, size_t sharedMem, cudaStream_t stream)Configure a device-launch.• cudaError_t cudaFuncGetAttributes (struct cudaFuncAttributes ∗attr, const char ∗func)Find out attributes for a given function.• cudaError_t cudaLaunch (const char ∗entry)Launches a device function.• cudaError_t cudaSetDoubleForDevice (double ∗d)Converts a double argument to be executed on a device.• cudaError_t cudaSetDoubleForHost (double ∗d)Converts a double argument after execution on a device.• cudaError_t cudaSetupArgument (const void ∗arg, size_t size, size_t offset)Configure a device launch.3.7.1 Detailed DescriptionThis section describes the execution control functions of the CUDA runtime application programming interface.3.7.2 Function Documentation3.7.2.1 cudaError_t cudaConfigureCall (dim3 gridDim, dim3 blockDim, size_t sharedMem, cudaStream_tstream)Specifies the grid and block dimensions for the device call to be executed similar to the execution configurationsyntax. cudaConfigureCall() is stack based. Each call pushes data on top of an execution stack. This data contains thedimension for the grid and thread blocks, together with any arguments for the call.Parameters:gridDim - Grid dimensionsblockDim - Block dimensionssharedMem - Shared memorystream - Stream identifierReturns:Note:cudaSuccess, cudaErrorInvalidConfigurationNote 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
3.7 Execution Control 21See also:cudaLaunch (C API), cudaLaunch (C++ API), cudaSetupArgument (C API)3.7.2.2 cudaError_t cudaFuncGetAttributes (struct cudaFuncAttributes ∗ attr, const char ∗ func)This function obtains the attributes of a function specified via func. The fetched attributes are placed in attr. If thespecified function does not exist, then :cudaErrorInvalidDeviceFunction is returned.Parameters:attr - Return pointer to function’s attributesfunc - Function to get attributes ofReturns:Note:See also:cudaSuccess, cudaErrorInitializationError, cudaErrorInvalidDeviceFunctionNote that this function may also return error codes from previous, asynchronous launches.cudaLaunch (C API), cudaLaunch (C++ API)3.7.2.3 cudaError_t cudaLaunch (const char ∗ entry)Launches the function entry on the device. entry can either be a function that executes on the device, or it canbe a character string, naming a function that executes on the device. entry must be declared as a __global__function. cudaLaunch() must be preceded by a call to cudaConfigureCall() since it pops the data that was pushed bycudaConfigureCall() from the execution stack.Parameters:entry - Device function pointer or char string naming device function to executeReturns:Note:See also:cudaSuccess, cudaErrorInvalidDeviceFunction, cudaErrorInvalidConfigurationNote that this function may also return error codes from previous, asynchronous launches.cudaLaunch (C++ API), cudaSetupArgument (C API), cudaConfigureCall3.7.2.4 cudaError_t cudaSetDoubleForDevice (double ∗ d)Parameters:d - Double to convertGenerated on Wed Apr 1 16:11:42 2009 for NVIDIA CUDA Library by Doxygen
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