CONFIGURATION

internal memory for sorting = 650 MB

EdgeVector default block size = 2048 KB
EdgeVector default #pages = 1
EdgeVector default page size = 4 block(s)

MST vector block size = 2048 KB
MST vector #pages = 1
MST vector page size = 4 block(s)

external bucket block size = 512 KB
external bucket page size = 1 block(s)

internal buckets: no of blocks = 1500000
internal buckets: edges per block = 8

Duplicates are removed.

The input is randomized.
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STXXL-DISK-CONFIGURATION (.stxxl)

disk=/mnt/hdq/stxxl,70000,syscall
disk=/mnt/hdi/stxxl,70000,syscall
disk=/mnt/hdk/stxxl,70000,syscall
disk=/mnt/hde/stxxl,70000,syscall

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GRID GRAPH

#nodes = 4.00e+07 ( = 20000 x 2000 )
#edges = 8.00e+07
#buckets = 0
#nodes which fit in internal memory = 1.60e+08
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EVENTS
total time:   0.00000 sec., section time:   0.00000 sec.  -  begin
total time:  54.45386 sec., section time:  54.45386 sec.  -  graph generated/imported
total time: 101.18854 sec., section time:  46.73468 sec.  -  Kruskal: edges sorted
total time: 101.98166 sec., section time:   0.79312 sec.  -  Kruskal: data structures initialized
total time: 231.11099 sec., section time: 129.12933 sec.  -  Kruskal: edges processed
total time: 231.14911 sec., section time:   0.03811 sec.  -  end
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RESULT
Minimum Spanning Tree:
total weight = 10692459614403
#edges = 39999999
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TIMING

total time = 1.76695e+02 sec.
time / m = 2.20930e-06 sec.
time / (m ln m) = 1.21408e-07 sec.
[m = #edges] 
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DUPLICATES
#duplicates removed = 0
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