Dear users of the HPC cluster systems at LRZ, Due to necessary repairs in the electrical infrastructure of our computing room that require switching off electrical power for some hours, the following HPC systems will become unavailable for user operation on October 15, 16:30: * MPP and MAC Clusters * The sgi systems ICE and Ultraviolet * the bulk part of the LCG Tier-2 Cluster We expect to go online again during the morning of October 17. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/aktuell/ali4669/ Reinhold Bader