Cuda core dumped with unknow error
Get error when using xmrig-nvidia with:
[CUDA] Error gpu 0: <cryptonight_gpu_hash>:878 "unknown error"
terminate called after throwing an instance of 'std::runtime_error'
  what():  [CUDA] Error: unknown error
Aborted (core dumped)

I'm using 2*1080 and with CUDA 8.0. This is the first time I get an cuda error. And what's the reason?

PS: The error takes palce randomly. The miner may work normally for about 1h （or less）, and then dumped. 

Thank you for reading and helping. I would post any other information if you need it.