The DiFX Software Correlator at IRA R I IRA-INAF /
The DiFX Software Correlator at IRA R I IRA-INAF /
The DiFX Software Correlator at IRA R I IRA-INAF /
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Chapter 6<br />
<strong>The</strong> Computer Cluster Used<br />
for Correl<strong>at</strong>ion<br />
<strong>The</strong> correl<strong>at</strong>or is installed on our experimental cluster, which is also an<br />
experimental grid node. We are aiming for the cluster to act as an allpurpose<br />
machine for radio astronomy d<strong>at</strong>a reduction.<br />
6.1 Machines<br />
<strong>The</strong> cluster is heterogeneous consisting of 8 machines connected with a<br />
1 Gbit switch (Table 6.1). This 24 CPU cluster represents a minimum<br />
amount of computing power required to correl<strong>at</strong>e sensible amounts of<br />
d<strong>at</strong>a.<br />
Table 6.1: Cluster used for the correl<strong>at</strong>ion<br />
Machine Number of Cores Type of Processor Clock Speed<br />
wn01 2 (2 × single core) Intel R○ 4 Xeon TM 3 GHz<br />
wn02 2 (2 × single core) Intel R○ 4 Xeon TM 3 GHz<br />
wn03 2 (2 × single core) Intel R○ 4 Xeon TM 3 GHz<br />
wn04 2 (2 × single core) Intel R○ 4 Xeon TM 3 GHz<br />
wn05 4 (2 × dual core) AMD Opteron TM 270 2 GHz<br />
wn06 4 (2 × dual core) AMD Opteron TM 270 2 GHz<br />
wn07 4 (2 × dual core) AMD Opteron TM 270 2 GHz<br />
wn08 4 (2 × dual core) AMD Opteron TM 270 2 GHz<br />
24
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