Starting Starting Accounts
The Unix Cluster is a network of UNIX computers. This is connected to the VAX cluster (which offers access to TFTR data)and the NERSC supercomputers (in Berkely, Califorinia). At the present time, these are the computers on which you may wish to get accounts on:
|The Unix Cluster|
These are a network of Unix workstations (mainly Sun workstations) which share disks and account information. It consists of the following computers:
|The VMS cluster|
These offer access to TFTR data. They are unsuitable for general purpose computing since they are usually overloaded. Most people use birch, beanie, hax and rax.
NERSC consists of 3 Cray supercomputers located at the Lawrence Berkeley Laboratory, Berkeley, California: a.nersc.gov (a 16 processor Cray C90), k.nersc.gov (a 32 processor Cray J90), c.nersc.gov (an 8 processor Cray 2), and f.nersc.gov (a 4 processor Cray 2). Crays are for heavy duty number crunching. Computer time is allocated yearly to PPPL by the Department of Energy (DOE).
With the exception of the VAXes, all these computers run some variant of the Unix operating system. The VAX cluster uses VMS.Starting Starting Accounts