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Faculty of Mathematics and Natural Science sends a proposal to the German National Science Foundation (DFG) concerning the procurement of an electronic computer.


Standard Elektrik Lorenz installs an electronic computer ER 56 in the institute for Applied Mathematics. Memory capacity 4000 words, seven decimal digits (35 bit) each. Storing one word took 0.15 msec. Drum storage device with 10.000 35-bit-words. Data processing tasks from throughout the university were accepted.


Foundation of a faculty-independent Computing Center which manages and operates the ER 56 and other data processing devices.


Installation of a system Siemens 4004/55 with 256 KB memory. Transfer of 32 bits from the cpu to the memory took 0.84 micro sec. 49 MB disk capacity.


Installation of a Control Data Cyber 72/76. The Cyber 76 was then the most powerful computer in the world with a memory capacity of 32 Kwords of 60 bits each. For the transfer of a word the computer needs 27.5 nano sec. Interactive terminals with 300 Baud transfer rate. 200 MB disk capacity.

Regional function:

  • delivery of 50% of the compute capacity to the newly founded universities in North Rhine Westfalia
  • 500 Regional computer users
  • 1000 users of the University of Cologne.
  • PDP 11 systems in several institutes of the Faculty of Mathematics and natural Sciences for special tasks

From 1986 on

Installation of public-access computers in pools throughout the university (financial support through the Computer Investment Programme CIP).

From 1988 on

client/server-concept based on UNIX.

From 1990 on

Installation of workstations for researchers throughout the university (financial support by the Workstations for Research Programme, WAP).


The Computing Center manages and operates a vector supercomputer NEC SX-3/11 of NEC/Japan with a memory capacity of 256 MB (2.7 nano sec/cycle time) and 30 GB disk capacity as a compute server, mainly used by regional users.


IBM RS6000-990 and Digital AXP 7000 are used as computer servers, 2 GB memory and 60 GB disk capacity are available on either system.


Installation of a Silicon Graphics Power Challenge SC900 with 16 processors, 8 GB memory and 50 GB disk capacity.


Installation of a SUN Ultra Enterprise 10000 with 40 processors, 20 GB memory and 90 GB disk capacity.

Foundation of ZAIK

  • Grown from a merger of the University`s Regional Computing Center (RRZK) and its Center for Parallel Computing (ZPR), the Zentrum für Angewandte Informatik der Universität zu Köln/ZAIK (Center for Applied Computer Science of the University of Cologne) is a central institution of the University of Cologne.
  • It coordinates service, research and teaching activities in the area of information processing throughout the University.
  • The Campus-Wide Services group ("Universitätsweiter Service") of the ZAIK corresponds to the former RRZK.
  • Close cooperation with all computer science related departments of the university is considered a vital ingredient of ZAIK`s mission.


Upgrade of the SUN Ultra Enterprise 10000 - starfire (336 MHz processors with 4MB cache), peak performance 27 GFLOPs.

Installation of a SUN E4500 - campfire with 12 processors, 5GB memory, 90 GB disk capacity.


Backup-/Archive Server System (TSM / ADSM)

  •  Four IBM 3466 NSM Model C30, each with 144 GB disk cache. 30 TB tape storage capacity.

Installation of a SGI Origin 2000 system with 32 R12000 processors and 16 GB memory in exchange for the SGI Power Challenge.


Internet access with a bandwidth of 155 Mbps without volume limitation.


Installation of a SUN Fire 6800 with 24 processors and 24 GB memory, peak performance 43 GFLOPs.

UKLAN backbone based on Gigabit Ethernet technology.

Start of the "Wireless Lan" regular service (30 access points spread over the campus).


Installation of a SUN Fire 15000 with 72 processors and 144 GB memory, peak performance 130 GFLOPs, and a second SUN Fire 6800.

Upgrade of the TSM/ADSM system, total capacity now is 112 TB.

Access to UKLAN from "outside" the university via VPN (Virtual Private Network).


Upgrade of the UKLAN backbone which is now configured redundantly.

Upgrade of the "Wireless Lan" service.

Installation of Linux SMP servers for several services.


SAN infrastructure, 56 TB of data are available in a virtualized manner.Cluster clio with 258 Opteron processors (129 Sun V20z nodes) with a peak performance of 1.1 TFLOPS and Infiniband interconnect.

SMP system altix1 (SGI Altix 3700 Bx2) with 24 Itanium 2 processors and 48 GB memory, peak performance 144 GFLOPS.

Parts of the UKLAN now based on 10Gigabit Ethernet technology.


Upgrade of Compute cluster clio: main memory is now 772 GB.

High performance parallel file system PanFS (Panasas) with a capacity of 20 TB and a transfer rate of up to 1.3 GByte/s.

Upgrade of the TSM system: new Servers. Capacity now 350 TB.


Virtualization of services.

  • About 40 guests available based on 2 server machines running VMware Infrastructure (VMware-ESX).

Participation in EU projects CoSpaces (Innovative Collaborative Work Environments for Individuals and Teams in Design and Engineering) and Citizen Media (European research project to enable non-professional users to co-create networked applications and experiences with user-generated content)


Hosting and administration of Compute clusters of institutes of the university.

Participation in the C3-Grid (Collaborative Climate Community Data and Processing Grid) project, a community project of the D-Grid Initiative which is funded by BMBF, the german Federal Ministry of Education and Research.

UKLAN backbone based on 10 Gigabit Ethernet technology.


Coordination of and participation in the SuGI (Sustainable Grid Infrastructure) project which is funded by the German Federal Ministry of Education and Research and the D-Grid. SuGI aims at the development of methods, concepts and utilities to support the dissemination of grid technologies to small and medium sized computing centers.

Installation of a compute cluster (funded by BMBF) for the usage by the chemistry community.

Modernization of UKLAN and WLAN.


50 years of Scientific Computation at the University of Cologne.

Installation of CHEOPS, a high performance cluster for scientific applications (first phase). 215 compute nodes with 1720 cores are coupled with QDR Infiniband technology.

Start of the MoSGrid (Molecular Simulation Grid) research project which intends to provide a standards compliant, functional and extensible environment for the execution of molecular simulations on remote HPC facilities. Project Management by RRZK.


Official Inauguration of Cheops. Installation of the second Phase. The Cluster with its more than 800 nodes now offers a peak performance of 100 Teraflop/s and is ranked on position 89 in the TOP 500 list of supercomputers (position 2 in NRW after Forschungszentrum Jülich)

Participation in the C3Grid-INAD (Towards an Infrastructure for General Access to Climate Data) project which is funded by the German Federal Ministry of Education and Research. 


Details are only available in German.


Details are only available in German.


Details are only available in German.


Details are only available in German.

If you have any questions or problems, please contact the RRZK-Helpdesk