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🗃 High-performance computing (HPC)

Summary
CSC's HPC infrastructure offers significant and versatile computing power as well as a large selection of preinstalled software and storage. Typical use cases for high performance computing (HPC) include simulations and data analysis.1
Internet
https://puhti.csc.fi
https://mahti.csc.fi
https://lumi.csc.fi

Open OnDemand login view - Puhti

Description

Puhti supercomputer is your gateway to high performance computing (HPC) at CSC. It caters to a wide range of use cases from interactive data analysis to medium scale simulations.2

Mahti is a supercomputer designed for massively parallel jobs that require large floating point performance and a capable interconnect.3

LUMI is one of the most competitive and ecological supercomputers in the world, located in CSC's data center in Kajaani, Finland. LUMI started operating in 2022. With LUMI, researchers are able to solve completely new types of research questions with the combination of HPC, AI (especially deep learning) and high-performance data analytics to solve a single research question. 4

Below is a table of the technical details of the HPC environments CSC offers.

Name Nodes Compute Cores per node Memory Local disk Availability
Puhti CPU5 682 Intel Xeon Gold 6230 2 x 20 @ 2.10GHz 192 - 1500 GiB 0 - 5960 GiB students,
teachers,
researchers
Puhti AI5 80 Intel Xeon Gold 6230
Nvidia Volta V100		 2 x 20 @ 2.10GHz
4 x 640 Tensor
4 x 5120 CUDA9		 384 GiB
4 x 32 GiB		 3600 GiB students,
teachers,
researchers
Mahti CPU6 1404 AMD Rome 7H12 2 x 64 @ 2.6 GHz 256 GiB n/a teachers,
researchers
Mahti GPU6 24 AMD Rome 7H12
Nvidia Ampere A100		 2 x 64 @ 2.6 GHz
4 x 432 Tensor
4 x 6912 CUDA9		 512 GiB
4 x 40 GiB		 3800 GiB teachers,
researchers
LUMI-C7 2048 AMD EPYC 7763 2 x 64 @ 2.45 GHz 256 - 1024 GiB n/a researchers,
companies
LUMI-G8 2978 AMD EPYC "Trento"
AMD MI250X		 64
4 x 220 Compute Units		 512 GiB
128 GiB		 n/a researchers,
companies

Tutorial

The following tutorial uses Puhti, but the procedure is similar for all Open OnDemand supercomputer services: Access HPC web interface

The following figure illustrates the differences in peak performance (rpeak) between different supercomputer environments.

Comparison chart of different supercomputers at CSC

The official performance records of the entire LUMI entity can be found here: top500.org

  1. https://research.csc.fi/csc-s-servers ↩

  2. https://research.csc.fi/-/puhti ↩

  3. https://research.csc.fi/-/mahti ↩

  4. https://research.csc.fi/-/lumi ↩

  5. https://docs.csc.fi/computing/systems-puhti/#nodes ↩↩

  6. https://docs.csc.fi/computing/systems-mahti/#compute-nodes ↩↩

  7. https://docs.lumi-supercomputer.eu/hardware/lumic/ ↩

  8. https://docs.lumi-supercomputer.eu/hardware/lumig/ ↩

  9. https://images.nvidia.com/aem-dam/en-zz/Solutions/data-center/nvidia-ampere-architecture-whitepaper.pdf ↩↩