Carlier Group Gaussian User Manual - Virginia Tech

Carlier Group Gaussian User Manual 7
group membership is the same as the owner. For our convenience, we have defined
the group "prc"—contact Paul if you are not yet a member of this group.
a)for the directory run
the owner (pcarlier) has read, write, and execute permissions;
the group (pcarlier) has read and execute permissions;
the world does not have permission to move to this directory (via a cd command).
b)for the directory cyclopropyl:
the owner (pcarlier) has read write and execute permissions;
the group (prc) has read and write permissions;
the world does not have permission to move to this directory (via a cd command).
c)in contrast, for the directory pub:
the owner (pcarlier) has read, write and execute permissions;
the group (pub) has read and execute permissions;
the world has read and execute permissions.
This means that the world can move to this directory (via a cd command) and view the
contents. Note that individual permissions in this directory may be set in such a way to
allow access to all, some, or none of the files within.
F. Communication
You will need an SSH client to communicate with Inferno2. Telnet is not secure and is
not supported. On the PCs you should find a program called SSH Shell Client. On
the Macintosh, you can use the Terminal or X11 application. On the Mac to use
Molden (an X-windows application) you must use X11.
As of April 2009, VT ARC currently has three SGI Enterprise ALTIX 3700 Superclusters
which provide Virginia Tech researchers with access to high performance computing on
SGI hardware (see http://www.arc.vt.edu/arc/sgi/index.php):
Hostname CPUs-Speed Memory Operating System
inferno.cc.vt.edu 20-1.3 GHz 32 GB SLES10-ProPack5
inferno2.cc.vt.edu 128-1.6 GHz 512 GB SLES10-ProPack5
cauldron.arc.vt.edu 64-1.5 GHz 320 GB SLES10-ProPack5
Inferno2 and Cauldron are accessed via a queuing system via the head nodes
charon1.arc.vt.edu or charon2.arc.vt.edu, see the latest details see
SGI Queuing System.