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Horseshoe5

The Horseshoe5 cluster started production 13/03/2009 and reached it's end of life 07/04/2014.

Conceptual overview

  • 106x computing nodes - 576 CPU cores, 39 TB user disk space
  • 20 GBps fully nonblocking DDR Infiniband interconnect
  • Gigabit ethernet
  • 1x front-end machine
  • 1x infrastructure server
  • Theoretical peak performance: 5.3 TFlops

Hardware

Infrastructure

Front-end Server
IBM x3550, 2x 2,5Ghz Intel Harpertown 4-core CPUs (L5420), 16 GB Ram, 1x500 GB HDD (7200rpm, 8 MB buffer, SATA300), 2x Gigabit Ethernet, 1xDDR 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
66x IBM x3550 1U rackmountable servers with 2x 2,5Ghz Intel Harpertown 4-core CPUs (L5420), 16 GB Ram, 500 GB HDD (7200rpm, 8 MB buffer, SATA300), 2x Gigabit Ethernet, DDR Infinibandx4

6x IBM x3550 1U rackmountable servers with 2x 2,5Ghz Intel Harpertown 4-core CPUs (L5420), 16 GB Ram, 2x500 GB HDD (7200rpm, 8 MB buffer, SATA300), 2x Gigabit Ethernet, DDR Infinibandx4

Software

Operating system on nodes and frontend
CentOS 6.3 on a 2.6.32 kernel
OFED 3.5
Batch- and scheduling software
CentOS 5.5 on a 2.6.18 kernel
Torque 2.5.12
MAUI 3.2.6
Compilers
GCC 4.4.6 and 4.7.3
GFortran 4.4.6
Intel C++ and Fortran v. 12.0.2
Applications and Libraries
OpenMPI 1.6.4
Intel MKL 10.3.2
AMD ACML 5.2.0