[Beowulf] QDR InfiniBand interconnect architectures ... approaches ...

[richard.walsh at comcast.net]

All, 


What are the approaches and experiences of people interconnecting 
clusters of more than128 compute nodes with QDR InfiniBand technology? 
Are people directly connecting to chassis-sized switches? Using multi-tiered 
approaches which combine 36-port leaf switches? What are your experiences? 
What products seem to be living up to expectations? 


I am looking for some real world feedback before making a decision on 
architecture and vendor. 


Thanks, 


rbw 
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