<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'><br><div>All,<div><br></div><div>What are the approaches and experiences of people interconnecting</div><div>clusters of more than128 compute nodes with QDR InfiniBand technology?</div><div>Are people directly connecting to chassis-sized switches? Using multi-tiered</div><div>approaches which combine 36-port leaf switches? What are your experiences?</div><div>What products seem to be living up to expectations? </div><div><br></div><div>I am looking for some real world feedback before making a decision on</div><div>architecture and vendor.</div><div><br></div><div>Thanks,</div><div><br></div><div>rbw</div></div></div></body></html>