Trace number 294509

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 68.8725 68.8996

General information on the benchmark

Namerandom/OnTreshold/7SAT/v50/
unif-k7-r89-v50-c4450-S1104207220-18.UNSAT.shuffled.cnf
MD5SUMf7104d4ea7ffa54012a8552b7fd4e3f8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark68.8725
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 0.008
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 4 duplicate clauses
0.61/0.63	c resolvent_look() :: found 4 resolvents
0.61/0.63	c main():: clause / variable ratio: ( 4454 / 50 ) = 89.08
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 |****
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c |********************************
c |****************************************************************| 0 NC: 140 JD: 11
0.61/0.69	c |----------------------------------------------------------------|
c |*
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1.43/1.48	c |----------------------------------------------------------------|
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5.01/5.03	c |----------------------------------------------------------------|
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c |****************************************************************| 3 NC: 33441 JD: 11
13.92/13.94	c |----------------------------------------------------------------|
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c |****************************************************************| 4 NC: 69371 JD: 11
28.46/28.54	c |----------------------------------------------------------------|
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c |****************************************************************| 5 NC: 109495 JD: 11
44.94/45.02	c |----------------------------------------------------------------|
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c |****************************************************************| 6 NC: 140386 JD: 11
57.94/57.99	c |----------------------------------------------------------------|
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c |****************************************************************| 7 NC: 157530 JD: 11
65.32/65.36	c |----------------------------------------------------------------|
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c |****************************************************************| 8 NC: 163667 JD: 11
67.98/68.06	c |----------------------------------------------------------------|
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c |****************************************************************| 9 NC: 165204 JD: 11
68.70/68.77	c |----------------------------------------------------------------|
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c |****************************************************************| 10 NC: 165462 JD: 11
68.80/68.89	c |----------------------------------------------------------------|
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c |****************************************************************| 11 NC: 165465 JD: 11
68.80/68.89	c |----------------------------------------------------------------|
c |
68.80/68.89	c
68.80/68.89	c main():: nodeCount: 165465
68.80/68.89	c main():: dead ends in main: 230
68.80/68.89	c main():: lookAheadCount: 7592857
68.80/68.89	c main():: unitResolveCount: 297987
68.80/68.89	c main():: time=68.870000
68.80/68.89	c main():: necessary_assignments: 434
68.80/68.89	c main():: bin_sat: 0, bin_unsat 0
68.80/68.89	c main():: doublelook: #: 507954, succes #: 410630
68.80/68.89	c main():: doublelook: overall 6.825 of all possible doublelooks executed
68.80/68.89	c main():: doublelook: succesrate: 80.840, average DL_trigger: 14.935
68.80/68.89	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/node33/watcher-294509-1171789727 -o ROOT/results/node33/solver-294509-1171789727 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/294509-1171789727/march_ks /tmp/evaluation/294509-1171789727/instance-294509-1171789727.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 3/64 12073
/proc/meminfo: memFree=921256/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=656 CPUtime=0
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 91 0 0 0 0 0 0 0 18 0 1 0 104007996 671744 76 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 164 76 47 123 0 39 0

[startup+0.107246 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 12073
/proc/meminfo: memFree=921256/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1440 CPUtime=0.1
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 466 0 0 0 10 0 0 0 18 0 1 0 104007996 1474560 240 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134536937 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 360 240 67 123 0 235 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1440

[startup+0.515328 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 12073
/proc/meminfo: memFree=921256/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1440 CPUtime=0.51
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 466 0 0 0 51 0 0 0 21 0 1 0 104007996 1474560 240 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134567054 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 360 240 67 123 0 235 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1440

[startup+1.3355 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=920224/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=1.33
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 133 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541823 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1580

[startup+2.97383 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=920096/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=2.96
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 296 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585122 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1580

[startup+6.24951 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919976/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=6.24
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 624 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541829 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1580

[startup+12.7058 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919912/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=12.69
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 1269 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537979 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1580

[startup+25.5075 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919912/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=25.49
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 2549 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585181 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 1580

[startup+51.1147 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919912/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=51.08
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 5108 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526957 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 51.08
Current children cumulated vsize (KiB) 1580

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

[startup+52.445 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919912/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=52.41
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 5241 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541823 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 52.41
Current children cumulated vsize (KiB) 1580

[startup+59.0033 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919912/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1580 CPUtime=58.97
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 606 0 0 0 5897 0 0 0 25 0 1 0 104007996 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526935 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 58.97
Current children cumulated vsize (KiB) 1580

[startup+65.5587 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919848/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1716 CPUtime=65.52
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 630 0 0 0 6552 0 0 0 25 0 1 0 104007996 1757184 336 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537957 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 429 336 72 123 0 304 0
Current children cumulated CPU time (s) 65.52
Current children cumulated vsize (KiB) 1716

[startup+67.195 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919848/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1716 CPUtime=67.16
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 630 0 0 0 6716 0 0 0 25 0 1 0 104007996 1757184 336 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538215 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 429 336 72 123 0 304 0
Current children cumulated CPU time (s) 67.16
Current children cumulated vsize (KiB) 1716

[startup+68.0152 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919848/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1716 CPUtime=67.98
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 631 0 0 0 6798 0 0 0 25 0 1 0 104007996 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134536953 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 67.98
Current children cumulated vsize (KiB) 1716

[startup+68.4233 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919848/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1716 CPUtime=68.38
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 631 0 0 0 6838 0 0 0 25 0 1 0 104007996 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134677364 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 68.38
Current children cumulated vsize (KiB) 1716

[startup+68.8374 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 12074
/proc/meminfo: memFree=919784/2055920 swapFree=4183908/4192956
[pid=12073] ppid=12071 vsize=1716 CPUtime=68.8
/proc/12073/stat : 12073 (march_ks) R 12071 12073 11345 0 -1 4194304 631 0 0 0 6880 0 0 0 25 0 1 0 104007996 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134536937 0 0 4096 0 0 0 0 17 1 0 0
/proc/12073/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 68.8
Current children cumulated vsize (KiB) 1716

Child status: 20
Real time (s): 68.8996
CPU time (s): 68.8725
CPU user time (s): 68.8645
CPU system time (s): 0.007998
CPU usage (%): 99.9607
Max. virtual memory (cumulated for all children) (KiB): 1716

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 68.8645
system time used= 0.007998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 633
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= 8
involuntary context switches= 200

runsolver used 0.050992 second user time and 0.147977 second system time

The end

Launcher Data (download as text)

Begin job on node33 on Sun Feb 18 09:08:47 UTC 2007

IDJOB= 294509
IDBENCH= 19890
IDSOLVER= 111
FILE ID= node33/294509-1171789727

PBS_JOBID= 3839576

Free space on /tmp= 66562 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/7SAT/v50/unif-k7-r89-v50-c4450-S1104207220-18.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/294509-1171789727/march_ks /tmp/evaluation/294509-1171789727/instance-294509-1171789727.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node33/watcher-294509-1171789727 -o ROOT/results/node33/solver-294509-1171789727 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/294509-1171789727/march_ks /tmp/evaluation/294509-1171789727/instance-294509-1171789727.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  f7104d4ea7ffa54012a8552b7fd4e3f8

RANDOM SEED= 303387221

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node33.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		: 3000.259
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		: 3000.259
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:        921664 kB
Buffers:         40768 kB
Cached:         973436 kB
SwapCached:       4164 kB
Active:         750304 kB
Inactive:       274480 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        921664 kB
SwapTotal:     4192956 kB
SwapFree:      4183908 kB
Dirty:            2388 kB
Writeback:           0 kB
Mapped:          15308 kB
Slab:            95492 kB
Committed_AS:   145072 kB
PageTables:       1408 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= 66562 MiB

End job on node33 on Sun Feb 18 09:09:56 UTC 2007