NSC, Linköping University

TETRALITH

Tetralith consists of 1908 servers running CentOS 7. During 2023 the operating system will be upgraded to Rocky 9. See Tetralith OS Upgrade for more information.

Each server has two Intel Xeon Gold 6130 processors, providing 32 cores per server. 1844 of the servers are equipped with 96 GiB of primary memory and 64 servers with 384 GiB. All servers are interconnected with a 100 Gbit/s Intel Omni-Path network which is also used to connect the existing storage. Each server has a local SSD disk for ephemeral storage (approx. 200GiB per thin node, 900GiB per fat node). An IBM Spectrum Scale system comprises the centre storage.

170 of the Tetralith nodes are equipped with one NVIDIA Tesla T4 GPU each as well as an updated, high-performance NVMe SSD scratch disk of 2TB. These nodes are regular Tetralith thin nodes which have been retrofitted with the GPUs and disks, and are accessible to all Tetralith users.

Slurm (e.g. sbatch, interactive, ...) is used to submit jobs. ThinLinc is available on the login nodes. Applications are selected using "module."

The servers used are Intel HNS2600BPB compute nodes, hosted in 2U Intel H2204XXLRE chassis. The hardware was delivered by ClusterVision B.V.

Tetralith has been decided to be kept in production through 2023-12-31.

For more information regarding the systems, storage and available software on the systems, visit the NSC web pages and especially the user guides.

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