gromacs-2021.* cannot be compiled when I do not edit gmxManageNvccConfig.cmake so I started to build Gromacs-2020.6.
Configuration was ran by latest Cmake3.21.1, so should I downgrade it? Which version of CMake should I use?
While the GROMACS build does support CUDA, at the bottom of the version output you can see “CUDA runtime: N/A” which indicates that there is no compatible runtime detected. The reason for this is that your CUDA driver is too old for the the CUDA 11.2 runtime your are using. Upgrade your driver to as sufficiently new one, that should resolve the issues you observe.