cudaError_t cudaSetDeviceFlags ( unsigned int  flags  ) 

Records flags as the flags to use when initializing the current device. If no device has been made current to the calling thread then flags will be applied to the initialization of any device initialized by the calling host thread, unless that device has had its initialization flags set explicitly by this or any host thread.

If the current device has been set and that device has already been initialized then this call will fail with the error cudaErrorSetOnActiveProcess. In this case it is necessary to reset device using cudaDeviceReset() before the device's initialization flags may be set.

The two LSBs of the flags parameter can be used to control how the CPU thread interacts with the OS scheduler when waiting for results from the device.

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