How to transfer large message(>MTU) using RDMA UD mode?
RDMA UD (Unreliable Datagram) mode support Send/Recv operation only, and with the limit that only one packet can be sent with a send wr, which causes that the transfered message’s size should less than MTU at a time. I want to know why this limit exists and whether there is a way/library to support that transfer a large message with a send wr?
How can I conduct an experiment to find that RDMA throughput decreases as the number of QPS increases?
My experimental environment is two machines equipped with one Mellanox CX-5, directly connected.
If I want to get this result graph, how do I conduct my experiment? I have tried the ib_read/write_bw/lat of perftest. Is it necessary to write C++ code to achieve multi-threaded RDMA communication at the same time to get?
For RoCE LAG, How to remap all QPs from one port to another?
My environment using RoCE LAG bonding device (802.3ad)for fail over. Without splitting the bond device, is there any methods to migrate all QPs on one port to another?