Dear users of the Linux cluster at LRZ, Two partitions of an sgi Ultraviolet system, each with 1040 Westmere-EX cores and 3.2 Gbyte of main memory per core, are now ready for provisional user operation. To use these systems, please * build your software on the ICE front end node (ice1-login) with OpenMP and/or SGI MPT, if applicable (please do not run programs built against Intel MPI, yet) * submit a SLURM job using --clusters=uv2 or --clusters=uv3 At the present stage, certain performance problems, as well as stability problems resulting from an as yet incomplete SLURM integration may still occur; however we need to see the behaviour of the system under user load in order to make a decision on how to proceed with solving these problems. During the provisional operation phase, system reboots or temporary removal of a system from user operation may occur without prior notification. Please consult the batch section of the cluster documentation at a href ="http://www.lrz.de/services/compute/linux-cluster/batch_parallel"> http://www.lrz.de/services/compute/linux-cluster/batch_parallel/ , which has been updated to provide information on usage of the UV. Once the new system runs smoothly, the previously available uv1 (presently still operated under SGE) will be retired from user operation. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/aktuell/ali4183/ Reinhold Bader