Nexus/Gamma
The GAMMA lab has a partition of GPU nodes available in the Nexus which are only available to GAMMA lab members.
Quality of Service
The following QoS are available to this partition. Please run the show_qos command to show the limits for these QoS.
- default
- medium
- high
- huge-long
Hardware
| Nodenames | Type | Quantity | CPUs | Memory | GPUs |
|---|---|---|---|---|---|
| gammagpu[01-03] | A5000 GPU Node | 3 | 32 | 256GB | 8 |
| Total | 3 | 96 | 768GB | 24 |
Storage
Other than the default Nexus storage allocation(s) Gamma has invested in a 20TB NVMe scratch file system on the nexusgamma00.umiacs.umd.edu 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.
Example
From nexusgamma00.umiacs.umd.edu you can run the following example to submit job(s).
$ srun --pty --gres=gpu:8 --account=gamma --partition=gamma --qos=huge-long bash $ hostname gammagpu01.umiacs.umd.edu $ 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)