Cheers all, I am in the market to provide some monitoring tools for users of our beowulf cluster. currently weve got the PBS submission scripts working to queue jobs. and that offers a script (qstat) for all who are familiar, but i need something to view checkpoints, how much memory is being used, loads on particular processors, etc. (the cluster is a 96 node cluster, not huge, but not tiny) would anyone have any suggestions for the standard reliable monitoring tools? Thanks, Adam.