cudaError_t cudaFuncSetCacheConfig	(	const char *	func,
		enum cudaFuncCache	cacheConfig
	)

On devices where the L1 cache and shared memory use the same hardware resources, this sets through cacheConfig the preferred cache configuration for the function specified via func. This is only a preference. The runtime will use the requested configuration if possible, but it is free to choose a different configuration if required to execute func.

func is a character string that specifies the fully-decorated (C++) name for a function that executes on the device. The parameter specified by func must be declared as a __global__ function. If the specified function does not exist, then cudaErrorInvalidDeviceFunction is returned.

This setting does nothing on devices where the size of the L1 cache and shared memory are fixed.

Launching a kernel with a different preference than the most recent preference setting may insert a device-side synchronization point.

The supported cache configurations are:

cudaFuncCachePreferNone: no preference for shared memory or L1 (default)
cudaFuncCachePreferShared: prefer larger shared memory and smaller L1 cache
cudaFuncCachePreferL1: prefer larger L1 cache and smaller shared memory

Parameters:

	func	- Char string naming device function
	cacheConfig	- Requested cache configuration

Returns:: cudaSuccess, cudaErrorInitializationError, cudaErrorInvalidDeviceFunction

Note:: Note that this function may also return error codes from previous, asynchronous launches.

See also:: cudaConfigureCall, cudaFuncSetCacheConfig (C++ API), cudaFuncGetAttributes (C API), cudaLaunch (C API), cudaSetDoubleForDevice, cudaSetDoubleForHost, cudaSetupArgument (C API), cudaThreadGetCacheConfig, cudaThreadSetCacheConfig