All HPC Systems: Interruption of user operation / storage maintenance

[LRZ aktuell]

Dear users of the HPC systems at LRZ,
 
 As part of its continuing efforts to provide ever increasing reliable
 and fast storage capacity to its HPC users, LRZ has installed new
 network attached storage devices which will be taken into user
 operation in early November. Changing over to this new storage area,
 which will comprise all HPC user's home directories, necessitates an
 interruption of operation on all HPC systems.
 
 For
 
  1. all systems in the Linux Cluster,
  2. the supzero migration system,
  3. HLRB-II,
 
 user operation will be suspended on Friday, October 28 at 10:00 am. It
 is expected that most systems will go online again in the afternoon of
 November 2, 2010. The following exceptions should be noted:
 
   * HLRB-II is completely retired from user operation since it has
     reached the end of its lifetime. All HLRB-II users must henceforth
     process their jobs on supzero.lrz.de. See also http://www.lrz.de/
     services/compute/hlrb/aktuell/ali4107/ for further details.
   * the new MEGWare MPP cluster will undergo a prolonged maintenance
     because it is intended to move the system into a different computer
     room which can provide the advanced cooling technology for which
     the system has been designed in order to achieve optimal energy
     efficiency. Therefore, the MPP system will be unavailable between 
     October 26, 10:00 am and November 11.
 
 Important Note: After the maintenance, the path name for your HOME
 directory will be changed to start with /home/hpc. If batch (or other)
 scripts do not reference the home directory via the $HOME environment
 variable they will need appropriate changes. This name change also may
 cause queued jobs to fail if they are started after the maintenance.


 This information is also available on our web server
 http://www.lrz-muenchen.de/services/compute/aktuell/ali4127/

 Reinhold Bader