Bridges User Guide


Account Administration


Allocations for Bridges  are given for "Bridges regular" or "Bridges large" and the two are charged differently. 

Bridges regular and GPU nodes

The  RSM nodes are allocated as "Bridges regular".  Service Units are defined in terms of compute resources: 

1 SU = 1 core-hour

GPU nodes are also charged at this rate. There is no extra charge for the use of the GPU units.

Bridges large

 The LSM and ESM nodes are allocated as "Bridges large".  Service Units are defined in terms of memory requested:

1 SU = 1 TB-hour 


Managing multiple grants

If you have more than one grant, be sure to charge your usage to the correct one.  Usage is tracked by group name.

Find your group names

To find your group names, use the id command.

id -Gn

will list all the groups you belong to.

Find your current group

id -gn

will list the group you associated with your current session.  

Change your default group

Your primary group is charged with all usage by default.  To change your primary group, the group to which your SLURM jobs are charged by default, use the change_primary_group command.  Type:

change_primary_group -l

to see all your groups.  Then type

change_primary_group groupname

to set groupname as your default group.


Charging for batch or interactive use

Batch jobs and interactive sessions are charged to your primary group by default.  To charge your usage to a different group, you must specify the appropriate group  with the -A groupname  option to the SLURM sbatch command.   See the Running Jobs section of this Guide for more information on batch jobs,  interactive sessions and SLURM.


Tracking your usage

The projects  command will help you keep tabs on your usage.  It shows grant  information, including usage and the scratch directory associated with the grant.




For more detailed accounting data you can use the Grant Management System.  

Managing your XSEDE allocation

Most account management functions for your XSEDE grant are handled through the XSEDE User Portal.  You can search the Knowledge Base to get  help.  Some common questions:

New on Bridges

DDT version 7.0 installed
DDT documentation

Runtime limit on LM nodes now 2 weeks
See partition limits

Omni-Path User Group

The Intel Omni-Path Architecture User Group is open to all interested users of Intel's Omni-Path technology.

More information on OPUG