LUIS Services Computing
Scientific Computing

Scientific Computing

Provision of a cluster system with massively parallel computer systems and machines with particularly large main memory.

Who can use this service

Students No
Individual Employees Yes
Central Facilities Yes
Administrators No

Description Scientific Computing

In order to meet the demand at the university for increased computing power and increased memory requirements, the IT Services offer massively parallel computing systems and computers with large main memory. These computers are available for all employees of the Leibniz University of Hannover free of charge.

  • Scope of services

    The service Scientific Computing offers:

    • Access to the cluster system with currently approx. 350 computing nodes
    • Use of free resources of the service Forschungscluster-Housing (the respective owners usually have priority during work hours)
    • Central storage systems (HOME, BIGWORK and PROJECT)
    • Central batch system and software server
    • Installation of special software is generally possible subject to an individual agreement (e.g. system suitability, financing)
    • Telephone and Email support
    • System monitoring
    • Introductory course on basic cluster usage (also on request)
  • Service-specific functional parameters
    • Maximum number of simultaneously running jobs per user: 64
    • Maximum number of simultaneously used CPU cores per user: 768
    • maximum job runtime(walltime): 200 hours
    • maximum number of jobs in the queue per user: 2000
    • Disk quota per user in the HOME area: 10 GB
    • Disk quota per user in the BIGWORK area: 1 TB
    • Disk quota per group in the PROJECT area: 10 TB
    • Access to the login nodes via SSH and graphically
    • Access to computing nodes only via the batch system
    • Personal accounts: 1 account per user, 1 user per account
    • At least one active project in the user information and administration service (BIAS) of the data center per associated institute

Prerequisites and User Accounts

  1. To use the cluster system, you need a user account
  2. User accounts are created in "projects" (using the "BIAS" service).
  3. Many institutes already have an open project with us, so you will usually just need to ask your institute's project management to create an account for you.
  4. In case no project exists, apply for one using the ORG.BEN.4 form below
  • How to apply for a project

    You can use the cluster system within the scope of a project registered with the LUIS. In the application form, the kind of computations and also the type of work to be carried out are described (e.g. "common project for the computing needs of the institute"). Students can only obtain an account for their work at an institute.

    PDF, 47 KB
  • Registering and maintaining user names

    The manager of an active project can create user accounts via the BIAS website. The user name should reflect the real name of the user, and the corresponding email address should be their email within the domain (no "freemail" addresses, please).

Getting started with the cluster system

In order to facilitate your start with the cluster system, our cluster system documentation wiki is linked below. Most of the more detailed questions about the cluster will be answered there.

Access to the cluster system documentation


Monday to Friday 8:00 a.m. – 5:00 p.m.
Monday to Friday 8:00 a.m. – 5:00 p.m.

Research Cluster Housing

Scientific Computing is closely linked to the Research Cluster Housing service, with which we offer institutes the opportunity to integrate and operate their hardware in the cluster. The resources of Research Cluster Housing are an important part of the cluster system, but the owners of the machines have priority in their use.