Performance comparison of the RoCE networks and InfiniBand networks based on HPC
The communication interface of high performance computing(HPC)systems is constantly evolving,but there is a lack of research on the performance comparison between the new generation of IB interconnect and RoCE interconnect.This paper presents a set of experimental methods for performance evaluation from MPI benchmark,HPC benchmark and HPC application.The conclusion shows that RoCE has better network performance than IB under congestion conditions,and the communication performance of RoCE network in MPI scenario is slightly higher than that of IB network.In HPC benchmark test,RoCE scheme has slightly higher floating point performance than IB scheme,but the overall performance is comparable.The performance of the RoCE and IB schemes varies according to the application scenarios.
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