Hi,
I am using ConnectX-3 FDR IB(4x) card on my two PC's with PCIe 2.0 x8 slot configuration and getting the following bandwith with TCP_STREAM test case using netperf. Can you please let me know whethere this 12.4Gbit/s is accroding to PCIe 2.0 x8 slot or I can get more atleast 50% of 56Gbit/s of it's maxmum speed. I have seen FDR connect-x will give maximum bandwith with PCIe 3.0 for x16 slot, if that is the case let me know what is the maximum bandwith with PCIe 2.0 x8 slot configuration. Because PCIe 2.0 has Speed 8GT/s, Width x8 so according to my calulcations it should be 8*8=64GT/s , so it should support more than 12.453Mb/s.
Can you please explain the with PCI 2.0 with x8 slot maximum FDR connectX-3 speed
Recv Send Send Utilization Service Demand
Socket Socket Message Elapsed Send Recv Send Recv
Size Size Size Time Throughput local remote local remote
bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB
87380 65536 65536 10.00 12453.44 6.29 4.73 0.662 0.497
Thanks and Advance.
Regards,
Ramesh