The figure below shows the hardware layout of the MITgcm cluster
facility. In addition to the myrinet-3 and myrinet-4 compute systems
and the nfs0 - nfs7 storage system, the diagram shows the
high-speed Myrinet switch fabric that provides internal networking
capabilities for parallel computation. The Myrinet network is
complemented by a switched Fast-Ethernet/Gigabit-Ethernet network
that links together all the machines in the facility. The gateway
server cg01 acts as the host for logins from outside systems and
hosts the server program for the PBS queuing system. The PBS queuing
system is the standard mechanism for running jobs on the myrinet-3
and myrinet-4 node sets. The gateway server cg01 also hosts a
web accessible PBS monitoring program. This program provides a
graphical snapshot of PBS load. A second machine, cg02, acts as the
server for system services that are internal to the cluster. These
include DHCP, YP. This machine also hosts the login account home
directories and shared software in /usr/local. Both the home
directories and /usr/local are visible to all machines in the
cluster. |
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