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LUNARC

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Milleotto

Milleotto is an IBM blade-centre solution with 252 nodes containing two 64-bit, dual core Intel Xeon 5160 (3.0 GHz), corresponding to a total of 1008 processors. The system interconnect is divided into two GigaBit Ethernet networks, one with a central HP switch for parallel processing (MPI communication) and one switched also in the blade centres for storage and other communication. Storage is implemented using 4 storage servers connected to an IBM disk chassi providing in total 7.3 Tb (RAID5) of shared disk distributed as a General Parallel File System (GPFS). The heated air leaving the racks is water-cooled with the help of IBM Rear Door Heat eXchangers.

System information

Hostname

milleotto.lunarc.lu.se

Queue system

Torque/Maui

Scheduling policy

Fairshare

Global filesystem

/disk/global
General Parallel File System (GPFS), available on all nodes.

Home

/home
General Parallel File System (GPFS), available on all nodes.

Compilers

GNU
Intel
NAG
Portland (PGI)

Software

Module-based software handling

Parallell libraries

MPI libraries available in binary form for all installed compilers.

Node information

CPU

2 Xeon 5160 (3.0 Ghz, dual core)

Memory

4 Gb (1 Gb per core)

Linux distribution

CentOS 5.3 x86_64 (RHEL4 compatible)

Local disk

93 Gb, temporary directory given by $PBS_O_LOCAL or $TMPDIR

 

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