Hardware

Our cluster consists of a file server and 440 P4 cores distributed in 4 sub clusters: B (32 cores), C (8 cores), D (16 cores) and E (384 cores). We use a T100 network for system management and a T1000 network for interprocessor communication. Each B, C, and D cluster has its own gigabit switch, while the E cluster is switched by a stacked array of 4 X 48 port switches. The A cluster (16 P3 cores) has been dismantled.

More photos of the hardware can be seen here

File server:

Dual Pentium III 1.4 GHz

2 GByte RAM

1.75 TByte RAID 5 Array

3ware 9550SX

Networks

T100 Ethernet

T1000 Ethernet

Switches

5 X Dell 3448 48 Port Fast Ethernet

4 X Extreme Networks X450a-48T 48 Port Gbit

HP 2724 24 port Gbit

3Com SuperStack3 8 port Gbit

B cluster

C cluster

D cluster

E cluster

16 Nodes

8 Nodes

8 Nodes

192 Nodes

Dual Xeon 2.4GHz

Pentium 4 3.0GHz

Dual Xeon 2.8GHz

Dual-Core P4D 3.0GHz

2 GByte RAM

1 GByte RAM

1 GByte RAM

2 GByte RAM

40 GByte IDE

80 GByte SATA

80 GByte SATA

80 GByte SATA

HP 24 port 2724

3Com SS3

X450a-48T (4)

Single node b'marks

Network b'marks

Parallel b'marks