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HPC

Latency Test

Server Side

 ib_read_lat -d mlx5_0

************************************
* Waiting for client to connect... *
************************************
---------------------------------------------------------------------------------------
                    RDMA_Read Latency Test
 Dual-port       : OFF		Device         : mlx5_0
 Number of qps   : 1		Transport type : IB
 Connection type : RC		Using SRQ      : OFF
 PCIe relax order: ON		Lock-free      : OFF
 WARNING: CPU is not PCIe relaxed ordering compliant.
 WARNING: You should disable PCIe RO with `--disable_pcie_relaxed` for both server and client.
 ibv_wr* API     : ON		Using DDP      : OFF
 Mtu             : 4096[B]
 Link type       : IB
 Outstand reads  : 16
 rdma_cm QPs	 : OFF
 Data ex. method : Ethernet
---------------------------------------------------------------------------------------
 local address: LID 0x01 QPN 0x0047 PSN 0x500429 OUT 0x10 RKey 0x1fffbe VAddr 0x00562a6f389000
 remote address: LID 0x02 QPN 0x0047 PSN 0x6bbf43 OUT 0x10 RKey 0x1fffbe VAddr 0x005bffc22a8000
---------------------------------------------------------------------------------------

 

Client Side

ib_read_lat -d mlx5_0 192.168.100.1
---------------------------------------------------------------------------------------
                    RDMA_Read Latency Test
 Dual-port       : OFF		Device         : mlx5_0
 Number of qps   : 1		Transport type : IB
 Connection type : RC		Using SRQ      : OFF
 PCIe relax order: ON		Lock-free      : OFF
 WARNING: CPU is not PCIe relaxed ordering compliant.
 WARNING: You should disable PCIe RO with `--disable_pcie_relaxed` for both server and client.
 ibv_wr* API     : ON		Using DDP      : OFF
 TX depth        : 1
 Mtu             : 4096[B]
 Link type       : IB
 Outstand reads  : 16
 rdma_cm QPs	 : OFF
 Data ex. method : Ethernet
---------------------------------------------------------------------------------------
 local address: LID 0x02 QPN 0x0047 PSN 0x6bbf43 OUT 0x10 RKey 0x1fffbe VAddr 0x005bffc22a8000
 remote address: LID 0x01 QPN 0x0047 PSN 0x500429 OUT 0x10 RKey 0x1fffbe VAddr 0x00562a6f389000
---------------------------------------------------------------------------------------
 #bytes #iterations    t_min[usec]    t_max[usec]  t_typical[usec]    t_avg[usec]    t_stdev[usec]   99% percentile[usec]   99.9% percentile[usec]
Conflicting CPU frequency values detected: 1200.000000 != 2294.660000. CPU Frequency is not max.
Conflicting CPU frequency values detected: 1200.000000 != 2294.655000. CPU Frequency is not max.
 2       1000          1.68           8.41         1.83     	       1.87        	0.10   		2.30    		8.41
---------------------------------------------------------------------------------------

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