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

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
0 222 0 2730.66 1.66818e+06 91666.6
Collective MPI_Reduce-length
0 220 0 2730.66 908442 21041.1

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 2002-01-29