Dear users of SuperMUC, on October 22 between 8:00 and 18:00 the system will 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. We also hope to receive bug fixes for GPFS, which has been causing problems recently. Diese Information finden Sie im WWW unter http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4438/ Reinhold Bader