Upd:SuperMUC: scheduled maintenance Oct. 29-30

[LRZ aktuell]

 Changes to this message: Update
Dear users of SuperMUC, it has turned out that the needed maintenance
 measures not onlv involve updates on the compute nodes, but also in the
 storage and configuration infrastructure. Therefore we have decided to
 postpone the maintenance, as well as to extend it from one to two days.
 
 Between October 29, 8:00 and October 30, 18:00 the system will
 therefore be unavailable for user operation. During this maintenance
 configuration changes and software updates will be installed which
 should improve stability of both Intel and IBM MPI operation.
 Particularly a memory leak in the IBM MPI library and some problem with
 MPIIO should be fixed. If we have recommended to you to use:
 
 MP_MPILIB=pempi and/or MP_SHARED_MEMORY=no
 
 we ask you to recompile, relink and rerun your application and check
 against the new library without these setting.
 
 An update for the GPFS file system will also be installed (although it
 is not expected that this update will solve all outstanding problems).


 This information is also available on our web server
 http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4438/

 Reinhold Bader