Bart Van Assche wrote: > On Jan 17, 2008 6:45 PM, Pete Wyckoff <pw at osc.edu> wrote: > >>There's nothing particularly stunning here. Suspect Bart has >>configuration issues if not even IPoIB will do > 100 MB/s. > > > By this time I found out that the BIOS of the test systems (Intel > Server Board S5000PAL) set the PCI-e parameter MaxReadReq to 128 > bytes, which explains the low InfiniBand performance. After changing > this parameter to 4096 bytes the InfiniBand throughput was as > expected: ib_rdma_bw now reports a > bandwidth of 933 MB/s. What are the new SRPT/iSER numbers? > Bart. > |