The general CUDA GPU systems (energon3 and energon4) will be offline briefly in the evening on Thursday Jun 30th as the CUDA GPUs are re-assigned to new compute nodes running RHEL6 (see 'Linux OS Upgrade'). We expect downtime for these systems to last roughly one hour and is scheduled to start at 6pm.  After such time you will need to run your CUDA software on the new CUDA enabled machines:

This change, although providing fewer GPU cores/server, will double the bus speed (8x -> 16x) between the CPUs and GPUs.  Providing an over all speed increase.

For information on our CUDA GPU systems.