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LosLobos Architecture and System Configuration

LosLobos is a cluster of 256 individual computing nodes, each with 2 CPUs per node, for a total of 512 processors. A high-speed, low latency Myrinet network interconnects the 256 nodes, and a Fast Ethernet network connects the cluster to file servers and the Internet. Login access is provided via an additional four nodes.

Architecture and configuration details can be found in the tables below.

Processors

512

Nodes

256

Interconnect

Myrinet

Network

Fast Ethernet

File server

AIX file server with 2 channel-bonded Gigabit Ethernet uplinks to Fast Ethernet network and 1 TB of SSA storage and 2 TB of heirarchical storage

Login nodes

4 (additional)

 

Vendor

IBM

Name

Netfinity 4500R

Processors

2

Memory

1 GB of 133 MHz ECC SDRAM

Bus speed

133 MHz

Storage

7 GB Integrated dual-channel Ultra160 SCSI

 

Vendor

Intel

Name

Pentium III

Clock speed

733 MHz

L1 CPU cache

32 KB

L2 cache

256 KB Full Speed ECC

 

Vendor

Myricom

Name

LANai7

 

Vendor

RedHat

Name

RedHat Linux 6.1

Kernel version

2.2.16smp

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