NODELIST
The list of nodes to run with mpi alltoallv, leave as "" to run the default tests over partitions. Examples: hydro01,hydro02 for a discrete comma separated list or hydro[03-05] to target a 3 node range. NOTE: hydro[01-33] and NODES=33 below would test the full sandybridge partition.
NODES
Number of nodes in your NODELIST to run with mpi and alltoallv. This only applies if NODELIST is populated (approx. 1/2 the nodes in a partition otherwise).
PARTITION
The slurm partition. This defaults to all the partitions configured for the test if NODELIST is not populated.