ubuntu 16.04 crash when run demo

Accelerated Computing CUDA CUDA Setup and Installation
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Environment：rtx2080,4. cuda10.1.168, cudnn7.5.1, ununtu16.04
Question: when run demo using multi-gpu, ubuntu system crashed and reboot unscheduled. The demo writed with python, it seems no problem. The system crash problem has any relation with gpu? whether it is suitable using cuda10.1.168 with cudnn7.5.1?

Looking forward your reply!!!

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check power supply

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OK. I will make a try, thank you.