High virtual memory usage when calling cuInit

Hello Nvidia,

I use video_codec_sdk_9\sample\AppEncCuda to develop some function. And I find virtual memory usage will high to 30Gb after call cuInit function. This issue only happened on x64 app. Could you help to check? Thanks.

This is virtual memory usage, and completely normal: CUDA uses a unified virtual address space, meaning all system memory and all GPU memory is mapped into a single virtual address space. In your case that is 30 GB in size.