  This paper presents an RDMA over Ethernet protocol used for data acquisition
systems, currently under development at the ESRF. The protocol is implemented
on Xilinx Ultrascale + FPGAs thanks to the 100G hard MAC IP. The proposed
protocol is fairly compared with the well-known RoCE-V2 protocol using a
commercial network adapter from Mellanox. Obtained results show the superiority
of the proposed algorithm over RoCE-V2 in terms of data throughput. Performance
tests on the 100G link show that it can reach a maximum stable link performance
of 90 Gbps with minimum packets sizes greater than 1KB and 95Gbps for packet
sizes greater than 32KB.
