Trace number 294673

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
March KS 2007-02-08UNSAT 67.5957 67.6053

General information on the benchmark

Namerandom/OnTreshold/7SAT/v50/
unif-k7-r89-v50-c4450-S1280573704-13.UNSAT.shuffled.cnf
MD5SUMb98a3615fa1f88c157643d9399a2087e
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark67.5957
Satisfiable
(Un)Satisfiability was proved
Number of variables50
Number of clauses4450
Sum of the clauses size31150
Maximum clause length7
Minimum clause length7
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 54450

Solver Data (download as text)

0.61/0.63	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.61/0.63	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.61/0.63	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.61/0.63	c main()::
0.61/0.63	c initFormula():: searching for DIMACS p-line....
0.61/0.63	c full lookahead due to high density!
0.61/0.63	c initFormula():: the DIMACS p-line indicates a CNF of 50 variables and 4450 clauses.
0.61/0.63	c parseCNF():: parsing....
0.61/0.63	c parseCNF():: the CNF contains 0 unary clauses.
0.61/0.63	c runParser():: parsing was successful, warming up engines...
0.61/0.63	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.61/0.63	c preprocessing fase I completed:: there are now 50 free variables and 4450 clauses.
0.61/0.63	c stat :: sign balance is biased by 0.007
0.61/0.63	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.61/0.63	c using k-SAT heuristics (size based diff)
0.61/0.63	c longest clause has size 7
0.61/0.63	c simplify_formula():: removed 0 tautological, 0 satisfied and 2 duplicate clauses
0.61/0.63	c resolvent_look() :: found 2 resolvents
0.61/0.63	c main():: clause / variable ratio: ( 4452 / 50 ) = 89.04
0.61/0.63	c longest clause has size 7
0.61/0.63	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.61/0.63	c dynamic_preselect_setsize :: off
0.61/0.63	c suggested doublelook initial :: 0
0.61/0.63	c main():: all systems go!
0.61/0.63	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 122 JD: 11
0.61/0.70	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 1 NC: 1849 JD: 11
1.33/1.39	c |----------------------------------------------------------------|
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c |****************************************************************| 2 NC: 10243 JD: 11
4.60/4.68	c |----------------------------------------------------------------|
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c |****************************************************************| 3 NC: 31095 JD: 11
13.00/13.03	c |----------------------------------------------------------------|
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c |****************************************************************| 4 NC: 65972 JD: 11
27.13/27.17	c |----------------------------------------------------------------|
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c |****************************************************************| 5 NC: 106067 JD: 11
43.61/43.73	c |----------------------------------------------------------------|
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c |****************************************************************| 6 NC: 137669 JD: 11
56.92/57.00	c |----------------------------------------------------------------|
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c |****************************************************************| 7 NC: 154470 JD: 11
64.09/64.16	c |----------------------------------------------------------------|
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c |****************************************************************| 8 NC: 160794 JD: 11
66.86/66.89	c |----------------------------------------------------------------|
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c |****************************************************************| 9 NC: 162084 JD: 11
67.47/67.49	c |----------------------------------------------------------------|
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c |****************************************************************| 10 NC: 162274 JD: 11
67.58/67.59	c |----------------------------------------------------------------|
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c |****************************************************************| 11 NC: 162279 JD: 11
67.58/67.60	c |----------------------------------------------------------------|
c |
67.58/67.60	c
67.58/67.60	c main():: nodeCount: 162279
67.58/67.60	c main():: dead ends in main: 210
67.58/67.60	c main():: lookAheadCount: 7439761
67.58/67.60	c main():: unitResolveCount: 291895
67.58/67.60	c main():: time=67.590000
67.58/67.60	c main():: necessary_assignments: 375
67.58/67.60	c main():: bin_sat: 0, bin_unsat 0
67.58/67.60	c main():: doublelook: #: 497831, succes #: 402738
67.58/67.60	c main():: doublelook: overall 6.826 of all possible doublelooks executed
67.58/67.60	c main():: doublelook: succesrate: 80.899, average DL_trigger: 14.912
67.58/67.60	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node16/watcher-294673-1171793020 -o ROOT/results/node16/solver-294673-1171793020 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/294673-1171793020/march_ks /tmp/evaluation/294673-1171793020/instance-294673-1171793020.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17242
/proc/meminfo: memFree=962584/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=656 CPUtime=0
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 91 0 0 0 0 0 0 0 18 0 1 0 199256305 671744 76 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 164 76 47 123 0 39 0

[startup+0.106758 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17242
/proc/meminfo: memFree=962584/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1440 CPUtime=0.1
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 474 0 0 0 10 0 0 0 18 0 1 0 199256305 1474560 240 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134567026 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 360 240 67 123 0 235 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1440

[startup+0.51471 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17242
/proc/meminfo: memFree=962584/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1440 CPUtime=0.51
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 474 0 0 0 51 0 0 0 21 0 1 0 199256305 1474560 240 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134536953 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 360 240 67 123 0 235 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1440

[startup+1.33462 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961616/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=1.33
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 133 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541829 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1580

[startup+2.97343 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961488/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=2.96
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 296 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537968 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1580

[startup+6.25005 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=6.24
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 624 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538429 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1580

[startup+12.7023 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=12.69
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 1269 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134565482 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1580

[startup+25.5038 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=25.49
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 2549 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538419 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 1580

[startup+51.1079 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=51.09
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 5109 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585120 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 51.09
Current children cumulated vsize (KiB) 1580

Solver just ended. Dumping a history of the last processes samples

[startup+52.4378 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=52.42
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 5242 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134536937 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 52.42
Current children cumulated vsize (KiB) 1580

[startup+58.996 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=58.98
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 5898 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585122 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 58.98
Current children cumulated vsize (KiB) 1580

[startup+62.2716 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961360/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1580 CPUtime=62.25
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 615 0 0 0 6225 0 0 0 25 0 1 0 199256305 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585134 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 62.25
Current children cumulated vsize (KiB) 1580

[startup+65.5502 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961296/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1716 CPUtime=65.53
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 639 0 0 0 6553 0 0 0 25 0 1 0 199256305 1757184 336 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585122 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 429 336 72 123 0 304 0
Current children cumulated CPU time (s) 65.53
Current children cumulated vsize (KiB) 1716

[startup+66.3661 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961296/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1716 CPUtime=66.34
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 639 0 0 0 6634 0 0 0 25 0 1 0 199256305 1757184 336 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134598407 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 429 336 72 123 0 304 0
Current children cumulated CPU time (s) 66.34
Current children cumulated vsize (KiB) 1716

[startup+67.1861 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961296/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1716 CPUtime=67.16
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 640 0 0 0 6716 0 0 0 25 0 1 0 199256305 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537968 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 67.16
Current children cumulated vsize (KiB) 1716

[startup+67.594 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17243
/proc/meminfo: memFree=961296/2055920 swapFree=4192812/4192956
[pid=17242] ppid=17240 vsize=1716 CPUtime=67.58
/proc/17242/stat : 17242 (march_ks) R 17240 17242 16180 0 -1 4194304 640 0 0 0 6758 0 0 0 25 0 1 0 199256305 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585186 0 0 4096 0 0 0 0 17 1 0 0
/proc/17242/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 67.58
Current children cumulated vsize (KiB) 1716

Child status: 20
Real time (s): 67.6053
CPU time (s): 67.5957
CPU user time (s): 67.5867
CPU system time (s): 0.008998
CPU usage (%): 99.9859
Max. virtual memory (cumulated for all children) (KiB): 1716

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 67.5867
system time used= 0.008998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 642
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 7
involuntary context switches= 181

runsolver used 0.088986 second user time and 0.174973 second system time

The end

Launcher Data (download as text)

Begin job on node16 on Sun Feb 18 10:03:40 UTC 2007

IDJOB= 294673
IDBENCH= 19894
IDSOLVER= 111
FILE ID= node16/294673-1171793020

PBS_JOBID= 3839314

Free space on /tmp= 66546 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/7SAT/v50/unif-k7-r89-v50-c4450-S1280573704-13.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/294673-1171793020/march_ks /tmp/evaluation/294673-1171793020/instance-294673-1171793020.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node16/watcher-294673-1171793020 -o ROOT/results/node16/solver-294673-1171793020 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/294673-1171793020/march_ks /tmp/evaluation/294673-1171793020/instance-294673-1171793020.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  b98a3615fa1f88c157643d9399a2087e

RANDOM SEED= 593591203

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node16.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.281
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.281
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:        963120 kB
Buffers:         67116 kB
Cached:         893112 kB
SwapCached:          0 kB
Active:         332672 kB
Inactive:       681344 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        963120 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2372 kB
Writeback:           0 kB
Mapped:          72660 kB
Slab:            64408 kB
Committed_AS:   892836 kB
PageTables:       1720 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66546 MiB

End job on node16 on Sun Feb 18 10:04:48 UTC 2007