• There are a lot of levels at which that can be answered, but a short description would be a Microway Linux cluster, 8 quad Opteron nodes (4 CPUs each node, 2 cores each CPU, i.e. 64 total cores or slots), 64gb RAM, Myrinet interconnect, running CentOS/Condor/Sun Grid Engine.
  
  Here is the link to the final quote of Aster.
  
  The CPUs are dual-core AMD Opteron 870's, each core runs at 2.0Ghz. Here is the link to the AMD website that explains the features of the Opteron, including memory architecture: AMD.
  

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