Performance Evaluation of Qlogic and Mellanox QDR InfiniBand
Thomas Schoenemeyer, Hussein N. El-Harake · 2011
In this report we describe the performance evaluation of two QDR- InfiniBand end-to-end solutions. The evaluation is carried out on a four-node cluster using MPI micro-benchmarks provided by the Ohio State University as well as the OFED benchmark tools. Since vendors prefer certain MPI- implementations, we used both, the OpenMPI and MVAPICH implementation for the benchmarks. Both solutions from Mellanox and Qlogic have their advantages and disadvantages. The performance differences depend upon the message size and the MPI- implementation. In some case the differences between Mellanox and Qlogic can be huge.