...
On some clusters (for example on GALILEO GALILEO100 or MARCONI100) you can choose to allocate for your job only part of the node. You are not forced to allocate all of it as it happens in clusters (like MARCONI) running in exclusive mode. In this case, the accounting procedure takes also into account the amount of memory you request for your job. If you ask for an amount of memory that is larger than the equivalent number of cores requested, the jobs will be billed for a larger number of cores than the ones you have reserved.
The billing always follows the basic idea illustrated above, but a generalized parameter for the number of reserved cores, accounting for the memory request, is now used:
...