Hi all, I basically want to do what this person wanted to do a couple years ago: https://groups.google.com/forum/#!topic/slurm-devel/KXx1zKeZL9k and am wondering if anything has changed since then? To recap the request in that thread to save you the click, I want to set a limit for a specific account and specific partition without specifying the user. So, for example, I want to limit the account X to using only 2 nodes in the partition "super-fast", but allow that account to use 10 nodes in the partition "old-and-slow". I also want to allow account Y to use 5 nodes in "super-fast" and 20 nodes in "old-and-slow".
Looks like associations are still ordered cluster/account/user/partition so its not possible to set a limit that applies to a cluster/account/partition tuple across all users. Have any other capabilities been added that would help me do what I want directly? I'm guessing that hierarchy is fairly engrained in the code and not easily worked around? It seems to me like having partition after user severely limits the usefulness of being able to specify the partition since it can only be used if I want to set limits on a per-user basis. Am I missing something? I'm also not sure I fully understand the solution of using QOS's proposed in that old thread. It looks like to do what I want I'd need to create QOSs that are the cross product of <accounts> and <partitions>, not just per account or per partition, and do a submit plugin that sets the QOS to <account><partition>, then set limits on all of those QOSs. Basically using QOSs only instead of associations. Seems like this is using QOSs for something they weren't intended for and not an ideal solution, but might work. Is my understanding correct? I haven't looked at using an external scheduler like Maui. Can anybody save me the research time and let me know if this is the type of thing I might be able to do using Maui? Am I just bumping into the limits of what the built-in scheduler can handle and need to bite the bullet and move to an external scheduler? Thanks for any help! Jared
