How to handle CUPTI_ERROR_HARDWARE_BUSY noted by CUPTI

When calling CUPTI, I got CUPTI_ERROR_HARDWARE_BUSY error. It’s very possible nobody is using this specifical hardware, why did I get this error? Is there any other causes? Even if somebody is using it, how can I know, nvidia-smi can’t can help me, please tell me how to solve this problem, thank you!