Access, usage, and filesystem layout on the PPPL cluster
Access and usage policies
Filesystem layout and automounting of directories
The PPPL cluster is only accessible from within the PPPL network.
All hosts, except for
no-login machines, reserved for batch
job processing. You cannot
to any individual host from outside the cluster.
and be placed onto a host in a small pool of interactive hosts. From there, you
can view files resident on batch-only hosts (see filesystem information below).
telnet and rsh
any cluster node is disabled -- use
from cluster nodes is enabled.
/u, /p, and /l
are accessible on each node of the cluster and have read and
write access. /u is for user home directories (for example, /u/wgrendel),
/p is for project directories (for example, /p/gyro),
and /l is for the /local directory resident on each
cluster node (for example /l/dawson001 is the /local on node dawson001).
The systems in
have also mounted every local filesystem from every batch-only node in the cluster.
The path is /l/<node>. For example, to see the files of the /local
filesystem on dawson032,
you would cd to the directory
All remote filesystems are mounted using the automount(8) daemon. Thus, the
filesystem only becomes available when a user
cds into a directory. For example, if
/p, you might see only a few
directories, but if you then
to the directory you want to access, it will be automatically mounted for you.