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Horseshoe5

The Horseshoe5 cluster started production 13/03/2009.

Conceptual overview

  • 106x computing nodes (840 CPU cores, 55 TB user disk space)
  • 20 GBps fully nonblocking DDR Infiniband interconnect
  • Gigabit ethernet
  • 1x front-end machine
  • 1x infrastructure server
  • Theoretical peak performance: 8.5 GFlops

Hardware

Infrastructure

Front-end Server
IBM x3550, 2x 2,5Ghz Intel Penrynn 4-core CPUs, 16 GB Ram, 1x500 GB HDD (7200rpm, 8 MB buffer, SATA300), 2x Gigabit Ethernet, 1xDDR infiniband
Infrastructure Server (batch, queue, web, name-services, mail)
IBM x3550, 2x 2,5 GHz Intel Penrynn 4-core CPUs, 16GB Ram, 2x500 GB HDD, 2x Gigabit, 1xSDR Infiniband
Switches
3 D-link DGS-3100-48 gigabit switches in a stack
1 QLogic Silverstorm 9120 Infiniband switch with 108 20GBps ports

Cluster nodes

Computing nodes
100x IBM x3550 1U rackmountable servers with 2 2,5Ghz Intel Penrynn Low voltage CPUs, 16 GB Ram, 500 GB HDD (7200rpm, 8 MB buffer, SATA300), 2x Gigabit Ethernet, DDR Infinibandx4

6x IBM x3550 1U rackmountable servers with 2 2,5Ghz Intel Penrynn Low voltage CPUs, 16 GB Ram, 2x500 GB HDD (7200rpm, 8 MB buffer, SATA300), 2x Gigabit Ethernet, DDR Infinibandx4

Software

Operating system on nodes and frontend
CentOS GNU/Linux 5.2 on a 2.6.18 kernel
OFED 1.3/Infinipath 2.2.1
Operating system on infrastructure server
Ubuntu 8.10-server
Batch- and scheduling software
Torque 2.3.6
MAUI 3.2.6
Compilers
GCC 4.3.2
Applications and Libraries
OpenMPI 1.2.5
See Docs.