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Comp. MPI_Reduce_scatter-nodes and MPI_Reduce-nodes

\epsfig{file=col_MPI_Reduce_scatter-nodes.comp035.eps}
msg. len. latency bandwidth msg. len latency bandwidth
[units] [$\mu$s] [1024 units/s] [units] [$\mu$s] [1024 units/s]
Min. msg. length Max. msg. length
(other params also min.) (other params also max.)
Collective MPI_Reduce_scatter-nodes
256 66.1 3782.15 256 310.8 12065.6
Collective MPI_Reduce-nodes
256 65.6 3810.98 256 227.9 16454.6

next up previous contents
Next: Comp. MPI_Reduce_scatter-length and MPI_Reduce-length Up: Comparisons Previous: Comp. MPI_Allreduce-length and MPI_Reduce_Bcast-length   Contents
Per Ekman 2002-01-31