Reduce is one of PMB's Collective Benchmarks. It is a benchmark of the
MPI_Reduce function. Reduces a vector of length
L = X/sizeof(float) float items. The MPI datatype is MPI_FLOAT, the MPI
operation is MPI_SUM.
2-node Cluster Results
4-node Cluster Results
8-node Cluster Results
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#bytes #reps linux dom0 domU(noSMP) domU(SMP)
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#bytes #reps linux dom0 domU(noSMP) domU(SMP)
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#bytes #reps linux dom0 domU(noSMP) domU(SMP) -------------------------------------------------------------------------- 0 1000 0.44 0.49 0.44 0.41 4 1000 2082.72 1849.45 2051.80 2495.59 8 1000 1088.28 1182.87 1145.48 1933.67 16 1000 793.67 1211.36 1053.94 2016.05 32 1000 553.28 1041.44 1001.70 2002.45 64 1000 511.77 730.20 1008.65 1880.20 128 1000 552.68 748.68 1033.79 2201.31 256 1000 632.49 831.17 1120.43 1683.66 512 1000 794.55 999.99 1298.29 1725.29 1024 1000 1106.49 1316.19 1631.66 2104.01 2048 1000 1600.21 1885.88 2284.77 3029.34 4096 1000 2090.16 2689.40 3051.30 10398.54 8192 1000 3129.93 3717.72 4076.30 27214.35 16384 1000 4971.19 6066.67 8507.39 62324.39 32768 1000 8999.20 9507.43 27175.03 102635.08 65536 640 17415.95 18266.04 52110.82 164890.01 131072 320 36234.99 37129.96 78231.31 204556.66 262144 160 74790.27 77039.04 124293.58 259008.46 524288 80 147485.03 149767.96 191648.47 444268.73 1048576 40 290582.03 294389.20 309045.28 751630.12 2097152 20 584214.44 587608.12 589083.18 1317221.84 4194304 10 1154658.27 1167819.84 1166427.60 2543216.50
