http://browser.geekbench.com/v4/cpu/search?dir=desc&q=dl580&sort=multicore_score
how many machines the top500 uses VMware or Windows
https://en.wikipedia.org/wiki/IOPS
https://www.youtube.com/watch?v=i_r3z1jYHAc&t=383s
Supercomputing Testbed based on Raspberry Pi
Linux Cluster Management Console HA, http://lcmc.sf.net
Juju Maas OpenStack
https://github.com/openstack/kolla-ansible
LCMC mySQL HA LB
LVS keepalive HAproxy nginx