Dear users of the supzero migration system, When user operation of the Petaflop system "SuperMUC" starts in summer 2012, a new and very powerful I/O subsystem will also become available. This will allow large-scale parallel I/O with an aggregate bandwidth of 200 GB/s and be based on IBM's General Parallel File system (GPFS). Handling large-scale I/O is not a trivial task and requires some knowledge of the properties of GPFS and its tools and facilities for I/ O tuning. In order to provide this knowledge, a one-day workshop will take place on January 30, 2012; participation in this event is highly recommended for all SuperMUC users who do large-scale I/O (either many small files, or any number of large files) with their simulation programs. Further details are available at http://www.lrz.de/services/compute/ courses/#GPFSTraining. Registration for the event is required since only a limited number of seats is available. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4182/ Reinhold Bader