The clusters - dubbed Lightning and Orange - will be used in defence modelling, environmental, medical and environmental applications.
The installation of the Lightning cluster will be in October to support the National Nuclear Security Admin's Advanced Simulation and COmputing Programme (ASCI). That system will include over 2,800 Opterons and run at a peak of 11.2 teraFLOPS.
The Orange cluster will also use Infiniband and will be deployed for medical, scientific and environmental research.
John Morrison, head of the Los Alamos computing and networking division, said that: "The Opteron processor provides a cost effective way for us to run our nuclear weapon ASCI codes initially in a mature 32-bit environment, and then, as the 64-bit software environment matures, easily transition to 64-bit operations later on".
He said that the clusters are being designed, built and integrated by LinuxNetwork and will use the Opteron 244, with both clusters using the Arima HDAMA motherboard. µ
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