Experimental results show that the proposed algorithms significantly outperform other MPI-Alltoall algorithms included in MPICH and LAM/MPI, on Ethernet switched clusters with hierarchical network topologies when the message size is long.

• 实验结果表明；本文所述的算法在消息长度较长时；明显优于MPICH和LAM/MPI中实现的MPI-Alltoall算法.