GADGET 4 on COSMA8

For the large 274 node commissioning runs, the following settings were used:

module load gnu_comp/9.3.0
module load openmpi/4.1.1
module load gsl/2.4

with the settings:

export UCX_TLS=self,sm,ud
export UCX_UD_MLX5_RX_QUEUE_LEN=16384

If writing restart files, it is also important to get striping correct, depending on whether you are using /snap8 (ideally), or /cosma8. This can make a huge difference to runtimes. Please ask if you are unsure.