I worked always w/very small HPC clusters and built them manually (each server). But what is reasonable to do for clusters containing some tens or hundred of nodes ? Of course w/modern Xeon (or Xeon Phi KNL) and IB EDR, during the next year for example. There are some automatic systems like OSCAR or even ROCKS.
But it looks that ROCKS don't support modern interconnects, and there may be problems w/OSCAR versions for support of systemd-based distributives like CentOS 7. For next year - is it reasonable to wait new OSCAR version or something else ? Mikhail Kuzminsky, Zelinsky Institute of Organic Chemistry RAS, Moscow
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