Rules for the cluster room

Please observe these simple rules when going into the cluster room:

  1. THE DOOR OF THE CLUSTER ROOM HAS TO REMAIN LOCKED AT ALL TIMES
    Always lock the door. If you are the last one in the lab, check
    the door before leaving. If you changed the water tank, lock the
    door afterwards. I found the door open most of the time during
    the last weeks.
  2. NEVER LEAVE LIGHT OR THIN OBJECTS (F)LYING AROUND
    Light objects will be sucked in by the airconditioner or, even
    worse, by the computing nodes. This will overheat and eventually
    kill the nodes. Be careful if you take sheets of paper, plastic
    bags or anything of the like into the room.

Of course, the usual rules (switch of light and monitors etc…) apply as well.

Please make sure that you remember these rules whenever going into the cluster room.

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Restricted user access to majorana

In order to protect majorana.ulb.ac.be better from broken programs and other faults, I restricted the users access. From now on, the following restrictions apply for all users:

  • max. 300 MB of memory
  • max. 100 active processes

These limits should not at all interfer with your daily work. They are only an upper boundary to prevent catastrophic failures.

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