Difference: ClusterJobs (18 vs. 19)

Revision 192006-10-30 - MattPost

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How to Use the Cluster Manager

Torque is a system for reserving nodes and running jobs

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 man pbsnodes - pbsnodes -a gives the current status of all nodes

These commands are in /usr/bin on nodes 33 through 66.

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You can launch a job from any of these machines (but not directly from other machines in the dept).
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Jobs should be launched from node64.
 

Node Usage Policy

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Torque is installed on nodes 33 through 66, and any jobs run on those machines should be scheduled through torque.
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The node usage policy can be summarized in two rules:
 
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All the node machines (0 through 66) are dual-processor machines. Please limit your cluster usage at any given time to 32 processors, which is roughly a quarter of the total computing power of the cluster.
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  • Any job using nodes 33 through 66 must scheduled with qsub from node64. This is so as not to disrupt time-sensitive programs running on other nodes. Because nodes 32 and below are not mediated by torque, you are free to login directly to those machines to start your programs.

  • Limit your cluster usage at any given time to 32 processors [roughly a quarter of the processing power].

All the nodes (0 through 66) are dual-processor machines, but nodes 33 and above are newer and a bit faster.

 

To Use a Node Interactively

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first, ssh to node64, and then type
  % qsub -I
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  % qsub -I -l nodes=node50
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You are free to ask for any node, but, according to node policy, make sure that you make your request from node64.
 

To Run a Batch Job

 
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