##Discussed:##

  • Remark on Salt: documentation is rather dispersed.
    • May be attached to University of Utah.
    • Seems to be a small group compared to Puppet, Chef.
    • Should we switch to one of those two? (Namely Puppet, since the MOC uses it so much.)
  • Looks like we’re close to running a job from engage1 cluster on Virtual node.
    • To do: Need compute node to be able to access controller.
    • Need to securely transfer Munge key.
    • VM needs public IP.
    • Need to do various security setups.
    • There are various paths in the slurm.conf file—ideally would be network synced, perhaps, but we can just “put them in place” on the compute node.
      • Prolog files, state save location
  • Build up to tying to Chris’ cluster:
    • Remark: Need a stable “snapshot” of these scripts on git.
      • Inside “slurm” directory, create “anuj_centos7” directory with Anuj’s scripts.
      • Create separate directory, “rajul_centos6” with current snapshot.
      • Third directory, “towards_engage1_centos6” with new work.
    • Start adding features to our “fake” controller that asymptotically approaches Chris’ controller (namely features in the slurm.conf file).
    • Make sure it works at each step.

##OSG:## Idea:

  • Two node job in VMs, suspend VMs in an orchestrated fashion, bring them back up.
  • Basic idea of suspending a job that’s running, using resources for something else, then paging it back in (all while keeping SLURM happy).
  • Let’s say there’s a VM running on a SLURM node. Suspend VM, put SLURM node in “Power Saving” mode to keep it from panicing?

##To-do:##

  • Setup a Slurm Controller more like engage1
    • What do we need to do on the real cluster? (Exchange e-mails with Chris)
  • Make a list of rsources to be shared; files, ports,munge key.
  • Homework thinking about suspend business in SLURM, how it interacts, who’s asleep and who’s dead.
  • Keep scripts on github
    • Put slurm.conf on github, but first we need to sanitize it for private information since it’s based on Chris Hill’s slurm scripts.