RegCM first benchmarks ESiWACE2

[goord]

Hi, I am opening this issue to discuss my preliminary findings regarding the med22 benchmark case (164 x 288 grid points, 23 vertical levels). I have run a preliminary benchmark on the Dutch national supercomputer Snellius using both gnu and intel compilers. The system contains of dual-socket nodes with 64 cores per CPU, and I observe that this case reaches about the maximum performance (11 simulated years per day) on 4 nodes.

@graziano-giuliani is this in line with your own performance numbers or am I missing crucial flags/options? BTW the intel MPI seems to do a slightly worse job here...