Building with NVIDIA compilers

Hello,

I have a couple of questions in connection with building and compiling ABINIT and its external dependencies.

In comparison to GNU compilers (gcc, gfortran), is there a difference in term of efficiency when building and compiling ABINIT and its external dependencies (OpenBLAS, FFTW, NetCDF, etc) with NVIDIA compilers (nvc, nvfortran)?

In addition, I wonder whether enabling GPU while building with GNU compilers leads to errors.
If there is anyone who had used Abinit with CUDA before please kindly advise. Any help is appreciated.