For the installating of the migration system for the petascale system "SuperMUC" at LRZ we are investigating which users or codes depend on MPI-IO. We ask all users who need MPI-IO to get in contact with the HLRB support: * via servicedesk (https://servicedesk.lrz.de/?service= Hochleistungsrechnen%20und%20Grid-Supercomputing%20%28HLRB%29&lang= en) * or via hlrb-admin_at_lrz.de This information is also available on our web server http://www.lrz-muenchen.de/services/compute/hlrb/aktuell/ali3973/ Matthias Brehm