How do I see how many SUs my group has available?

Login to the MSI login nodes or an HPC system and type acctinfo. You will be given a short summary of your SU usage. An example output is shown below:

Accounting summary for the current period


Info for group groupname:
Data reflects jobs ending before Wed Mar  7 13:01:45 2012
All units are in SUs

   -----------+----------+------------+-------------------+-----------------
     Group   |  SU Type | Allocation |        Remaining  | Accounting Type 
   -----------+----------+------------+-------------------+-----------------
   groupname | Standard | 1000000.00 | 671463.55 ( 67% ) |   group ceiling      
   -----------+----------+------------+-------------------+-----------------