Queues

Nodes on Argon are separated into 3 types of queues:

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In addition to the above, there are some nodes that are not part of any investor queue. These are only available in the all.q queue and are used for node rentals and future purchases. The number of nodes for this purpose varies.

GPU selection policy

For queues that consist of all nodes containing a GPU, and are split out into a QUEUE-GPU queue, the policy is to set the ngpus resource to 1 if not explicitly set. For other queues that contain GPU nodes the policy has been set by the queue owner to either request a GPU by default or not.

Guidelines for selecting a queue

It may not always be obvious, particularly if you are a member of an investor group, which is the best queue to submit a job to. As a guideline, if you are in an investor group and there are enough free slots in your queue for your job(s) then you should use the investor queue. If you are not in an investor group, or there are not enough free slots in your investor queue, you should submit parallel jobs to the UI queue. If not submitting to an investor queue, and if your jobs are serial jobs, they should generally be submitted to the all.q queue. Unless you have a small number of jobs, and/or can not risk them getting evicted, then use the UI queue.

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While not indicated in the above, a parallel job can be submitted to the all.q queue. Since a parallel job likely runs on more than one node, the likelihood of a job getting evicted is increased. Thus, it is recommended that parallel jobs be submitted to the UI queue in preference to the all.q queue. 

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GPU selection policy

For queues that consist of all nodes containing a GPU, and are split out into a QUEUE-GPU queue, the policy is to set the ngpus resource to 1 if not explicitly set. For other queues that contain GPU nodes the policy has been set by the queue owner to either request a GPU by default or not.