Dear users of the MPP cluster at LRZ, Due to presently unknown reasons, the MPP Cluster is experiencing considerable instability of operation, leading to many failed jobs. To enable identification of the root cause, an emergency maintenance has been scheduled, which will start on Monday, Nov. 28 at 13:30. We will notify you via this ALI when the cluster is ready for user operation again. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/aktuell/ali4174/ Reinhold Bader