The unit for R is defined by the value of RPN in qmanager.
On a CXC where jobs always request whole nodes it is expected that the value of RPN will be 1. The Rvalues on queues will define the number of nodes. Because the NDallocator is managing node then having the Rval representing nodes is more readable.
On "normal" clusters where jobs can share nodes then the value of Rpernode will be set to the number of cores per node e272. The Rval on queues will define the number of cores and will need to be whole numbers of nodes. If Rpernode is set to 272 then an Rval of 15 nodes will be 272 * 15 = 4080.
The AZR has been configured to simulate the CXCSysA. Rpe_node has been set to 1 and the Rval on queue define the number of nodes. Because the cluster only has 61 nodes, setting RminRstdRmax to 3, 6 and 10 seem reasonable proportions of the system.
If Rpernod or the Rval need to be changed for testing then we can do so.