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Note that if you do not use the above strategy then it is possible that your job process will share cores with other job processes. That may be okay, and preferred for high throughput jobs, but is something to keep in mind. It is especially important to keep this in mind when using the orte parallel environment. There is more discussion on the orte parallel environment on the Advanced Job Submission page. In short, that parallel environment is used in node sharing scenarios, which implies potential core sharing as well. For MPI jobs, that is probably not what you want. As on previous systems, there is a parallel environment (56cpnXcpn, where X is the number of cores per node) for requesting entire nodes. This is especially useful for MPI jobs to ensure the best performance.
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