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Comp. MPI_Allreduce-length and MPI_Reduce-length

\epsfig{file=col_MPI_Allreduce-length.comp030.eps}
\epsfig{file=col_MPI_Allreduce-length.comp.nt031.eps}
msg. len. latency bandwidth msg. len latency bandwidth
[units] [$\mu$s] [units/s] [1024 units] [$\mu$s] [1024 units/s]
Min. msg. length Max. msg. length
Collective MPI_Allreduce-length
0 216.6 0 2730.66 159278 4.11456e+06
Collective MPI_Reduce-length
0 161.1 0 2730.66 116571 351373

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