Random seed

[ashwinvis]

Find a way to uniquely set random seed for a given mpi rank and size, while not resulting in similar sequences

[ashwinvis]

The random_seed can be called in usrdat3. See

https://github.com/exabl/Nek5000/blob/ad058c9b596a97c7c386054f99f1b68615643a2d/core/drive1.f#L140-L148

[ashwinvis]

The mth_ran_dst function looks promising. Need to find more information

https://github.com/KTH-Nek5000/KTH_Examples/blob/8c1f04bbfd16af04c4494f1ac9dd0a1e1426f9a5/phill_STAT/phill.usr#L80-L115