urgent computing topline

 

NCAR Frost


Cluster details

This BG/L runs Cobalt as the default job manager/scheduler. You can run urgent jobs on these resources using either the 'spruce_sub' or the Globus extensions.

Policy

NCAR Frost policy map is as follows -

red - 'next-to-run'
orange - 'next-to-run'
yellow - 'next-to-run'

Initial Setup

  • 1) Login to the machine- ssh -A username@tg-login.frost.ncar.teragrid.org or
    ssh -A username@fr0103ge.frost.ncar.teragrid.org
  • 2) Check if the variable $TG_COMMUNITY is set. This will be the base of the SPRUCE community space you would need to access. If not, set it to /tgtools/contrib or please contact us for further instructions.
  • 3) Compile your codes and have them handy in your home directory tree.

spruce_sub

Invoke the spruce_sub command with the urgency and job script specified. The script can be found here -

$TG_COMMUNITY/spruce/bin

The usage is -
$TG_COMMUNITY/spruce/bin/spruce_sub -u <yellow/orange/red> <rest of the command line options>

This cqsub wrapper functions just like cqsub, but with an additional urgency input.

More about running jobs using spruce_sub can be found here.

NOTE: Please observe that the syntax of submission is different in the above link. But the usage details are the same.

Globus submissions

SPRUCE jobs can be submitted as any other Globus job. An additional urgency parameter and the right contact string are all that needed. The urgency level can take three values -
(urgency=yellow/orange/red)
and
the contact string is -
gatekeeper.frost.ncar.teragrid.org/jobmanager-spruce

More about running jobs using Globus interface can be found here.