３GTEPS の制限：その２

昨日は 3GTEPS の壁という話をしたが、さすがに以下のマシン(AMD Opteron 6174 x 4)では 3GTEPS を軽く超える。その値は 5.84GTEPS になっている。

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Parallel Breadth-First Search for Graph500 Benchmark version 3.44
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CPU name is AMD Opteron(tm) Processor 6174
freq / RAM is 2199.975 MHz / 251.91 GB
#cpu, #nodes, #cores is 48 8 6
COMPILER is GCC (GNU C Compiler) version 4.7.2
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scale, edgefactor is 25 16
energy_loop is disable
#threads, #NUMAs is 48 8
mpol_bind is ON(mmap with mbind(MPOL_BIND))
mem_interleave is OFF
switching parameter is 0.000035 (n ~= 1.174405e+03)
queue buffer size is 65536
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SCALE: 25
nvtx: 33554432
edgefactor: 16
terasize: 8.58993459199999983e-03
A: 5.69999999999999951e-01
B: 1.90000000000000002e-01
C: 1.90000000000000002e-01
D: 5.00000000000000444e-02
generation_time: 1.67543580532073975e+01
construction_time: 1.58551478385925293e+01
nbfs: 64
min_time: 7.30950832366943359e-02
firstquartile_time: 7.78018832206726074e-02
median_time: 9.18971300125122070e-02
thirdquartile_time: 1.07358932495117188e-01
max_time: 1.30918025970458984e-01
mean_time: 9.39249694347381592e-02
stddev_time: 1.62639719317221459e-02
min_nedge: 5.36865498000000000e+08
firstquartile_nedge: 5.36865498000000000e+08
median_nedge: 5.36865498000000000e+08
thirdquartile_nedge: 5.36865498000000000e+08
max_nedge: 5.36865498000000000e+08
mean_nedge: 5.36865498000000000e+08
stddev_nedge: 0.00000000000000000e+00
min_TEPS: 4.10077599337726879e+09
firstquartile_TEPS: 5.21346694917975998e+09
median_TEPS: 5.84458185425835419e+09
thirdquartile_TEPS: 7.03729207755900383e+09
max_TEPS: 7.34475527254737568e+09
harmonic_mean_TEPS: 5.71589750021723461e+09
harmonic_stddev_TEPS: 1.24698064099856243e+08