PPPL Unix Cluster
The Unix Cluster has following characteristics:
A single account grants you access to all computers. Once you've logged
into one of the computers, gaining access to the other computers usually
does not involve re-entering your password.
There's a single ``home'' directory for each user which is available on
all the computers. You can edit your files on one machine and compile
and run them on another machine.
There's a single E-mail address for each user, and a single system file
Most of the file systems are shared between computers.
Most of the same software is available on all the computers.
Various other services are provided by the cluster and are available to
users from any computer. These include: printing, news, web publishing,
anonymous ftp, fax transmission and reception.
This means that it usually doesn't much matter which computer you use.
Typically, you might be content just to use a single computer.
However, if that computer becomes too slow or is scheduled to be down,
then you can move to another computer more-or-less transparently.