User access
Frost has two login nodes for interactive use. Note that to compute
on the TeraGrid, you must log in to the proper node using the method
below. Interactive computing on frost is similar to working in any
other UNIX environment.
Logging in with an NCAR account
NCAR users need a CryptoCard to log in to Frost. To log in, use the following instructions:
- ssh to frost.ucar.edu
- Log in using your UCAS login name and password
- At the CryptoCard Challenge prompt,enter your PIN on your CryptoCard and press ENT
- Type the number that appears on the card at the CryptoCard Challenge prompt.
Example:
$ ssh joeuser@frost.ucar.edu
gatekeeper password:
CryptoCard Challenge "71975212": 000-0000
Logging in with a TeraGrid account
The recommended method of logging in to TeraGrid resources is to
obtain a single sign-on certificate. Single Sign-On refers to the
ability to log in from one location, authenticating yourself so that
you will be recognized by all TeraGrid resources without having to
repeatedly enter your login information for each command or
resource. All TeraGrid users can log in via Single Sign-on, which is
based on Grid Security Infrastructure (GSI), a part of the Globus
Toolkit. Authentication on TeraGrid resources is accomplished through
user certificates and recognized certificate authorities (CAs).
To set up single-sign on, please see the document:
You can also use gsissh from a TeraGrid system to log in to frost
via the addresses below:
tg-login.frost.ncar.teragrid.org | User Logins
gridftp.frost.ncar.teragrid.org | GridFTP
gatekeeper.frost.ncar.teragrid.org | Globus/GRAM. (Use the 'jobmanager-cobalt' job manager).
The Cobalt scheduler, designed by Argonne National Laboratory, provides batch job
management for frost. Cobalt currently supports partition sizes between
32 and 4096 nodes. A partition of the appropriate size will be
automatically selected based on the number of nodes you request for
your job. However, when using partitions of 512 nodes or less, the
3D-torus network is reduced to a 3D mesh (i.e. the wrap-around edges
are inaccessible.) Cobalt on frost is currently configured with these
partition sizes: 32, 64, 128, 256, 512, 1024, 2048, and 4096. For
information about using Cobalt to submit jobs, see
Job
submission on frost in this document.
To expedite turnaround in the batch queues, please specify a
time limit for your job that is smaller than the default maximum
time limit if possible.
These limits are specified at the
Frost Info web page. You may pre-arrange longer wallclock
limits by contacting CISL Consulting Services
(consult1@ucar.edu,
303-497-1278) and explaining your need, including the desired
wallclock limit and the calendar interval for which you need it.
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Table of contents - Frost user
guide
If you have questions about this document, please contact us by any of the means
shown on our Customer Support page.
© Copyright 2004-2007. University Corporation for Atmospheric
Research (UCAR). All Rights Reserved.
Address of this page:
http://www.cisl.ucar.edu/docs/frost/access.jsp
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