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LSF 10.1 makes use of Linux control groups (cgroups) to limit the CPU cores and memory that a job can use. The goal is to isolate the jobs from each other and prevent them from consuming all the resources on a machine. All LSF job processes are controlled by the Linux cgroup system.  If the a job's processes on a host use more memory than it requested, the job will be terminated by the Linux cgroup memory sub-system.

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Difference in LSF configuration on Juno vs Luna

1. There is no "iounits" resource on Juno.
2. Memory (GB) is per slot/task on Juno. Memory(GB) is per job on Luna.
3. All jobs should have -W (Walltime) on Juno. LSF enforced enforces it. Please, don't use -We on Juno.
4. All nodes on Juno will have internet access.
5. GPFS and OS reserve 10GB of RAM per host on Juno CentOS7 hosts. Usable memory for LSF jobs: Total RAM - 10 GB.