Caractéristiques du Blue Gene / Q

Dr. Vincent Keller

CADMOS Applications analyst

Vincent Keller received his Master degree in Computer Science from the University of Geneva (Switzerland) in 2004, and his PhD degree in 2008 from the Swiss Federal Institute of Technology (EPFL) in the HPCN and HPC Grids fields. Since 2010, Dr. Vincent Keller is the applications analyst for EPFL and University of Lausanne within the CADMOS project. His research interests are in HPC applications analysis, Grid and cluster computing and energy efficiency of large computing ecosystems.


Dear CADMOS users,

the LEMANICUS BlueGene/Q supercomputer has reached the end of its life in December 2016. The CADMOS Committee decided to extend its life for six additional months on a best effort basis but without the IBM support. Its complete shutdown and decommissioning will intervene in Q2/2017. There will be no additional extension.

During the last months, the CADMOS Committee worked hard to find a alternative to the continuation of the service. An agreement between CADMOS and the CSCS (Swiss National Supercomputing Center) has been signed. The CADMOS users (from EPFL, UNIGE and UNIL) are entitled to use a total amount of 170'000 node hours a year on the Piz Daint supercomputer (ranked 8th on the top500 list, top spot at the European level). Those 170'000 node hours must be compared to the 8.9 million node hours a year you share on LEMANICUS but with the notable difference of performance. One Piz Daint node peak performance is ~ 5 TF where one LEMANICUS node peak performance is 0.2 TF (25 x).

CADMOS will stick on the same procedure as the past 7 years. The financing of a project is based on a competitive basis. A project proposal showing the need of the use of a supercomputer-class machine like Piz Daint must be submitted. This project will be reviewed on the technical part (scaling trends, performance comparisons, needs, etc..). The 170'000 node hours will be shared equally between the three CADMOS institutions.

Please note that a financial period last 3 months. Every unsed but reserved hour node is lost.

Finally, the agreement between CADMOS and the CSCS has a duration of three years from January 1st, 2017. 20 K

The computing time on Piz Daint for the CADMOS users starts on January 1st, 2017.
You can send us a project proposal from now on.

Yours sincerely
The CADMOS Committee and the HPC applications experts.

Lemanicus (emeritus)


BG/Q main characteristics

  • IBM Blue Gene/Q Massively Parallel Computer
  • 1 rack, 5D torus
  • 1204 16-cores nodes, PowerPC A2 processor 1.6 GHz
  • Energy efficient, water cooled : GF/W
  • 209.7 TF/s peak, 172.7 TF/s on HPL
  • 2.2 PB of disk space, GSS file storage
  • OS Linux SuSE





  • Two IBM System-p hosts
  • (open to the outside world)
  • (accessible within EPFL network only)
  • Configuration
  • 8 Power6 cores 4.2 GHz
  • 32 GB of memory
  • Login
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