News and Changes for SuperMUC users
LoadLeveler Submit Filter We will introduce a filter that checks your LoadLeveler script during submission and tries to resolve issues with misconfigured jobs (e.g., specifying more than 32 tasks_per_core on SuperMUC, non-existing job classes, wrong time limits etc.) Please inform us if you run into trouble with this filter. Budgeting will start Beginning with Nov 1st, we will start booking consumed computing time off your budget. Energy Tags Using the energy functions of LoadLeveler, a job can run with a lower CPU frequency to save energy. You can set an acceptable performance degradation (max_perf_decrease_allowed) or required energy saving (energy_saving_req) for the job in the job command file. LoadLeveler will choose a suitable CPU frequency for the job or reject its submission based on the specified value. The energy_policy_tag helps LoadLeveler identify the energy data associated with a job. With the energy data, LoadLeveler can decide which frequency should be used to run the job with minimal performance degradation. For details see: http://www.lrz.de/services/compute/ supermuc/loadleveler/#energytags. Software Upgrade Between October 29, 8:00 and October 30, 18:00 the system will be unavailable for user operation. For Details see: http://www.lrz.de/ services/compute/supermuc/aktuell/ali4438/. TSM support We hope to provide the TSM backup and archive functionality on SuperMUC soon after the maintenance. This will be announced by a separate message. Support Service Nov 1st is a public holiday in Bavaria, therefore no application support personell is available on that day. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4447/ Matthias Brehm
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