[Lustre-discuss] max write speed of QDR HCA card

lakshmana swamy klakshman03 at hotmail.com
Wed Dec 30 22:13:00 PST 2009


  Dear All,


  Whats the maximum write speed can be achieved with Infiniband QDR HCA card.



 The Question arised from my lustre  setup where Iam not able to exceed 500MB/s (write speed) with two OSSs and one MDS


 Each OSS has four OSTs and one HCA card. I would like to know which is the bottleneck here.



 I have been using IOR for benchmarking


Thank you


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