Dear all, Recently, we got a new PC cluster and use OpenPBS 2.3 to manage all jobs to be executed. OpenPBS is a new stuff to our administration group. Currently, we use all default setup in OpenPBS and thus as we've known, the scheduler would be FIFO and the policy is FIFO, which is not fair as we understood. Thus, it would be nice for us to use fair_share rule, which would make whole system resource be fair and more efficiently used by all users. However, we are not 100% sure whether the only change is change option of "fair_share" from "false" to "true" in file sched_config on PBS server. What else we should do for making this "fair_share" working? Is there better rule than fair_share to make all user have fair share of system resources? As well, it would be nice for all users to know what is the order of their jobs in the queue, from which they could know when the jobs from themselves would be picked up. Is there any command could show this? What's the meaning of SessID? I appreciate your attention and all response. Thanks a lot. Guishan Zheng