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Queues

Different task scheduling Queues are available in order to facilitate flexible access to the computational resources.

Naming Convention

Queue name consists of the 4 main parts as demonstrated below. Only one part, denoted as 2 and enclosed by braces {}, is mandatory. Other parts, enclosed by brackets [], are optional.

[1a][1b][1c]{2}[3][4]

Explanation

  1. GPU-specific concerns:

    a. Whether queue is GPU-enabled. If yes, letter "G" is used. b. Type of GPU. P means P100. V100 is used by default for GPU-enabled queues otherwise. c. Number of GPUs per each node, 1 GPU if not specified.

  2. Queue cost category: either "D" (Debug), "O" (Ordinary) or "S" (Saving).

  3. Queue provision mode, R (Regular) and F (Fast).

  4. Maximum number of cores per single node. Depends on the cluster and cloud provider if it is not specified.

Examples

  • G4OF: GPU-enabled, V100, 4 GPUs, Ordinary, Fast; 32 cores per node on AWS only
  • GPSF, GPU-enabled, P100, 1 GPU, Saving, Fast, 6 cores per node on Azure only
  • OR16: Ordinary, Regular, 16 cores per each compute node
  • OF: Ordinary, Fast; 36 cores per node on AWS, 16 cores on Azure
  • SFplus: Saving, Fast; 72 later generation (compared to "SF") cores on AWS only

Charge Policies

The provision mode determines charge policy:

R (Regular) core seconds: jobs are only charged for core-seconds consumed

F (Fast) flat fee: jobs are charged for core-seconds consumed plus a flat fee (5 core-minutes) due to increased on-demand provisioning cost

Failed jobs in the F (Fast) provision category will still incur a flat fee

We advise users to prototype calculations in other queues and only deploy production-ready large-scale runs in queues with "flat fee" charge policies.

List of Queues

Detailed cluster-specific lists of queues are available for the Amazon Web Services and Azure separately.

Select Queue

Queues can be selected under the Web Interface according to the instructions found here. Similarly, the desired queue can be specified in the Batch Script for the case of Job submission via the Command Line Interface.