To install GROMACS on the cluster we are going to use SPACK. With the recent releases Spack introduced binary caches, so that an installation does not need to go through the lenghtly compilation, but rather downloads the compiled binaries for the specific target.
During verification we submitted a job to reserve a compute node.
We pick one of the instances to connect to.
Once we are loged in, we activate the AWS environment (in case it is not already activated) and install GROMACS v2020.5.
spack env activate aws spack env list
time spack install --no-check-signature --no-checksum firstname.lastname@example.org