Hi Jens, Jens Dreger <jens.dre...@physik.fu-berlin.de> writes:
> Hi everyone! > > Is it possible to transparently assign different walltime limits > to nodes without forcing users to specify partitions when submitting > jobs? > > Example: let's say I have 10 nodes. Nodes n01-n05 should be available > for jobs with a walltime up to 14 days, while n06-n10 should only > be used for jobs with a walltime limit less then 1 day. Then as long > as nodes n06-n10 have free resources, jobs with walltime <1day should > be scheduled to these nodes. If n06-n10 are full, jobs with walltime > <1day should start on n01-n05. Users should not have to specify > partitions. > > Would this even be possible to do with just one partition much > like nodes with different memory size using weights to fill nodes > with less memoery first? > > Background of this question is that it would be helpfull to be able > to lower the walltime for a rack of nodes, e.g. when adding this rack > to an existing cluster in order to be able to easily shut down just > this rack after one day in case of instabilities. Much like adding > N nodes to a cluster without changing anything else and have only > jobs with walltime <1day on thiese nodes in the beginning. If you just want to reduce the allowed wall-time for a given rack, can't you just use a maintenance reservation for the appropriate set of nodes? Cheers, Loris -- Dr. Loris Bennett (Mr.) ZEDAT, Freie Universität Berlin Email loris.benn...@fu-berlin.de
