can cuda driver api fully be covered by cuda runtime api? basically for upper level, like cuBLAS, they intends to call cuda runtime api instead of cuda driver api?
https://docs.nvidia.com/cuda/cuda-runtime-api/driver-vs-runtime-api.html#driver-vs-runtime-api
I’m not sure what you mean by fully covered. The Runtime API has everything you need to start coding a program.
The Driver API offer much finer granularity, meaning there are some low-level functionality in the Driver API not available in the Runtime. Most programs can get very good performance with the Runtime API.