Computational Cluster Tiger
Tiger is a Beowulf type cluster dedicated to scientific computing at the Astronomical Institute of the Charles University in Prague. It is designed for parallel running of single-thread computational tasks providing on-demand allocation of CPU time. The cluster is accessible via the headnode sirrah.troja.mff.cuni.cz; further distribution of jobs to another diskless nodes is maintained by software Wimpy developed at the Institute. The cluster is based on the x86_64 architecture and is powered by GNU Linux (CentOS 6.x distribution).

Main aim of this website is to provide basic user's manual - all users are kindly asked to read at least sections Quick start and Basic rules and to respect the rules described there. Comments and suggestions on improvements are welcome at wimpy@sirrah.troja.mff.cuni.cz.


2012-09-06  Tiger was upgraded to the operating system CentOS 6.x
2009-10-14  Tiger's upgrade to 2GB RAM per CPU core is completed
2008-07-03  Tiger with the new headnode hardware and operating system (CentOS 5.x) is released
2005-07-14  Tiger runs in a native 64-bit mode (SuSE 9.2 distribution).
2005-05-05  Tiger from the Prague ZOO is guarding this website from now on (thanks to M. Dovciak).
2005-04-14  Tiger is ready for use in a 32-bit mode.
2005-02-09  In spite of many bugs, Wimpy moved first process from one node to another.
2004Components for five dual nodes were purchased; single-node tests were performed.


The cluster was built with financial support from following sources:
  • Centre for Theoretical Astrophysics, MSMT LC06014
  • Czech Ministry of Education, research program MSMT0021620860
  • Czech Ministry of Education, research plan J13/98: 113200004
  • Czech Science Foundation grant 205/08/0064 (D. Vokrouhlicky)
  • Czech Science Foundation grant 205/05/2737 (D. Vokrouhlicky)
  • Czech Science Foundation grant 205/03/0902 (V. Karas)
  • Czech Science Foundation grant 202/02/0735 (J. Bicak)

Last updated: 20.12.2014 (L.)