Function rcudnn_sys::cudaDeviceSetSharedMemConfig

pub unsafe extern "C" fn cudaDeviceSetSharedMemConfig(
    config: cudaSharedMemConfig
) -> cudaError_t

\brief Sets the shared memory configuration for the current device.

On devices with configurable shared memory banks, this function will set the shared memory bank size which is used for all subsequent kernel launches. Any per-function setting of shared memory set via ::cudaFuncSetSharedMemConfig will override the device wide setting.

Changing the shared memory configuration between launches may introduce a device side synchronization point.

Changing the shared memory bank size will not increase shared memory usage or affect occupancy of kernels, but may have major effects on performance. Larger bank sizes will allow for greater potential bandwidth to shared memory, but will change what kinds of accesses to shared memory will result in bank conflicts.

This function will do nothing on devices with fixed shared memory bank size.

The supported bank configurations are:

• ::cudaSharedMemBankSizeDefault: set bank width the device default (currently, four bytes)
• ::cudaSharedMemBankSizeFourByte: set shared memory bank width to be four bytes natively.
• ::cudaSharedMemBankSizeEightByte: set shared memory bank width to be eight bytes natively.

\param config - Requested cache configuration

\return ::cudaSuccess, ::cudaErrorInvalidValue \notefnerr \note_init_rt \note_callback

\sa ::cudaDeviceSetCacheConfig, ::cudaDeviceGetCacheConfig, ::cudaDeviceGetSharedMemConfig, ::cudaFuncSetCacheConfig, ::cuCtxSetSharedMemConfig