Function rcudnn::cudaDeviceGetCacheConfig

pub unsafe extern "C" fn cudaDeviceGetCacheConfig(
    pCacheConfig: *mut cudaFuncCache
) -> cudaError

\brief Returns the preferred cache configuration for the current device.

On devices where the L1 cache and shared memory use the same hardware resources, this returns through \p pCacheConfig the preferred cache configuration for the current device. 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 functions.

This will return a \p pCacheConfig of ::cudaFuncCachePreferNone on devices where the size of the L1 cache and shared memory are fixed.

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
• ::cudaFuncCachePreferEqual: prefer equal size L1 cache and shared memory

\param pCacheConfig - Returned cache configuration

\return ::cudaSuccess \notefnerr \note_init_rt \note_callback

\sa ::cudaDeviceSetCacheConfig, \ref ::cudaFuncSetCacheConfig(const void*, enum cudaFuncCache) “cudaFuncSetCacheConfig (C API)”, \ref ::cudaFuncSetCacheConfig(T*, enum cudaFuncCache) “cudaFuncSetCacheConfig (C++ API)”, ::cuCtxGetCacheConfig