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The GAMMA lab has a partition of GPU nodes available in the Nexus which are only available to GAMMA lab members.


You can always find out what hosts you have access to submit via the Nexus#Access page. However the GAMMA lab has a special submission host that has additional local storage available.


Quality of Service

The following QoS are available to this partition. Please run the show_qos command on a submission host to show the limits for these QoS.

  • default
  • medium
  • high
  • huge-long


Nodenames Type Quantity CPUs Memory GPUs
gammagpu[01-03] A5000 GPU Node 3 32 256GB 8
Total 3 96 768GB 24


Other than the default Nexus storage allocation(s) Gamma has invested in a 20TB NVMe scratch file system on the host as /scratch1. To utilize this space users will need to copy data from/to this over SSH from a compute node. To make this easier users may want to setup SSH keys that will allow users to copy data without prompting for passwords.

This file system is not available over NFS, there are no backups or snapshots available for this file system. Please refer to our UNIX Local Storage page for more information.


From you can run the following example to submit an interactive job. Please note that you need to specify the --account, --partition and --qos. Please refer to our SLURM documentation about about how to further customize your submissions including making a batch submission.

$ srun --pty --gres=gpu:8 --account=gamma --partition=gamma --qos=huge-long bash
$ hostname
$ nvidia-smi -L
GPU 0: NVIDIA RTX A5000 (UUID: GPU-cdfb2e0c-d69f-354b-02f4-15161dc7fa66)
GPU 1: NVIDIA RTX A5000 (UUID: GPU-be53e7a1-b8fd-7089-3cac-7a2fbf4ec7dd)
GPU 2: NVIDIA RTX A5000 (UUID: GPU-774efbb1-d7ec-a0bb-e992-da9d1fa6b193)
GPU 3: NVIDIA RTX A5000 (UUID: GPU-d1692181-c7de-e273-5f95-53ad381614c3)
GPU 4: NVIDIA RTX A5000 (UUID: GPU-ba51fd6c-37bf-1b95-5f68-987c18a6292a)
GPU 5: NVIDIA RTX A5000 (UUID: GPU-c1224a2a-4a3b-ff16-0308-4f36205b9859)
GPU 6: NVIDIA RTX A5000 (UUID: GPU-8d20d6cd-abf5-2630-ab88-6bba438c55fe)
GPU 7: NVIDIA RTX A5000 (UUID: GPU-93170910-5d94-6da5-8a24-f561d7da1e2d)