Trace number 294591

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 68.9215 68.9524

General information on the benchmark

Namerandom/OnTreshold/7SAT/v50/
unif-k7-r89-v50-c4450-S1179686861-10.UNSAT.shuffled.cnf
MD5SUMf925586f9b717029fe6870824cb1d191
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark68.9215
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 0.005
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 7 duplicate clauses
0.61/0.63	c resolvent_look() :: found 3 resolvents
0.61/0.63	c main():: clause / variable ratio: ( 4453 / 50 ) = 89.06
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: 158 JD: 11
0.61/0.71	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 1 NC: 1868 JD: 11
1.32/1.40	c |----------------------------------------------------------------|
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c |****************************************************************| 2 NC: 9918 JD: 11
4.60/4.62	c |----------------------------------------------------------------|
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c |****************************************************************| 3 NC: 30946 JD: 11
12.99/13.10	c |----------------------------------------------------------------|
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c |****************************************************************| 4 NC: 66822 JD: 11
27.66/27.70	c |----------------------------------------------------------------|
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c |****************************************************************| 5 NC: 107147 JD: 11
44.35/44.38	c |----------------------------------------------------------------|
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c |****************************************************************| 6 NC: 138813 JD: 11
57.46/57.58	c |----------------------------------------------------------------|
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c |****************************************************************| 7 NC: 156851 JD: 11
65.13/65.25	c |----------------------------------------------------------------|
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c |****************************************************************| 8 NC: 163538 JD: 11
68.11/68.18	c |----------------------------------------------------------------|
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c |****************************************************************| 9 NC: 165042 JD: 11
68.82/68.87	c |----------------------------------------------------------------|
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c |****************************************************************| 10 NC: 165170 JD: 11
68.82/68.94	c |----------------------------------------------------------------|
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c |********************************
c |****************************************************************| 11 NC: 165171 JD: 11
68.82/68.95	c |----------------------------------------------------------------|
c |
68.82/68.95	c
68.82/68.95	c main():: nodeCount: 165171
68.82/68.95	c main():: dead ends in main: 188
68.82/68.95	c main():: lookAheadCount: 7581383
68.82/68.95	c main():: unitResolveCount: 297095
68.82/68.95	c main():: time=68.920000
68.82/68.95	c main():: necessary_assignments: 415
68.82/68.95	c main():: bin_sat: 0, bin_unsat 0
68.82/68.95	c main():: doublelook: #: 506771, succes #: 409607
68.82/68.95	c main():: doublelook: overall 6.819 of all possible doublelooks executed
68.82/68.95	c main():: doublelook: succesrate: 80.827, average DL_trigger: 14.947
68.82/68.95	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/node2/watcher-294591-1171791374 -o ROOT/results/node2/solver-294591-1171791374 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/294591-1171791374/march_ks /tmp/evaluation/294591-1171791374/instance-294591-1171791374.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 21690
/proc/meminfo: memFree=252792/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=656 CPUtime=0
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 91 0 0 0 0 0 0 0 18 0 1 0 199092366 671744 76 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 164 76 47 123 0 39 0

[startup+0.107022 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 21690
/proc/meminfo: memFree=252792/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1440 CPUtime=0.1
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 490 0 0 0 10 0 0 0 18 0 1 0 199092366 1474560 240 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134567028 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 360 240 67 123 0 235 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1440

[startup+0.515065 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 21690
/proc/meminfo: memFree=252792/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1440 CPUtime=0.5
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 490 0 0 0 50 0 0 0 21 0 1 0 199092366 1474560 240 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134536953 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 360 240 67 123 0 235 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 1440

[startup+1.33515 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251696/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=1.32
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 132 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585122 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 1580

[startup+2.97132 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251568/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=2.96
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 296 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526957 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1580

[startup+6.24766 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251448/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=6.24
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 624 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538419 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1580

[startup+12.7053 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=12.69
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 1269 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537979 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1580

[startup+25.5107 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=25.49
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 2549 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 1580

[startup+51.1413 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=51.11
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 5111 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526947 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 51.11
Current children cumulated vsize (KiB) 1580

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

[startup+52.4715 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=52.44
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 5244 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134527043 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 52.44
Current children cumulated vsize (KiB) 1580

[startup+59.0251 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251448/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1580 CPUtime=58.99
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 633 0 0 0 5899 0 0 0 25 0 1 0 199092366 1617920 312 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537968 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 395 312 72 123 0 270 0
Current children cumulated CPU time (s) 58.99
Current children cumulated vsize (KiB) 1580

[startup+65.5828 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1716 CPUtime=65.55
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 657 0 0 0 6555 0 0 0 25 0 1 0 199092366 1757184 336 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541823 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 429 336 72 123 0 304 0
Current children cumulated CPU time (s) 65.55
Current children cumulated vsize (KiB) 1716

[startup+67.219 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1716 CPUtime=67.18
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 657 0 0 0 6718 0 0 0 25 0 1 0 199092366 1757184 336 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541788 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 429 336 72 123 0 304 0
Current children cumulated CPU time (s) 67.18
Current children cumulated vsize (KiB) 1716

[startup+68.0441 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1716 CPUtime=68
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 658 0 0 0 6800 0 0 0 25 0 1 0 199092366 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585122 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 68
Current children cumulated vsize (KiB) 1716

[startup+68.4531 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1716 CPUtime=68.41
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 658 0 0 0 6841 0 0 0 25 0 1 0 199092366 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538408 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 68.41
Current children cumulated vsize (KiB) 1716

[startup+68.8652 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 21691
/proc/meminfo: memFree=251384/2055920 swapFree=4192812/4192956
[pid=21690] ppid=21688 vsize=1716 CPUtime=68.82
/proc/21690/stat : 21690 (march_ks) R 21688 21690 20880 0 -1 4194304 658 0 0 0 6882 0 0 0 25 0 1 0 199092366 1757184 337 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526957 0 0 4096 0 0 0 0 17 1 0 0
/proc/21690/statm: 429 337 72 123 0 304 0
Current children cumulated CPU time (s) 68.82
Current children cumulated vsize (KiB) 1716

Child status: 20
Real time (s): 68.9524
CPU time (s): 68.9215
CPU user time (s): 68.9125
CPU system time (s): 0.008998
CPU usage (%): 99.9552
Max. virtual memory (cumulated for all children) (KiB): 1716

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 68.9125
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= 660
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= 422

runsolver used 0.091986 second user time and 0.168974 second system time

The end

Launcher Data (download as text)

Begin job on node2 on Sun Feb 18 09:36:14 UTC 2007

IDJOB= 294591
IDBENCH= 19892
IDSOLVER= 111
FILE ID= node2/294591-1171791374

PBS_JOBID= 3839307

Free space on /tmp= 66545 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/7SAT/v50/unif-k7-r89-v50-c4450-S1179686861-10.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/294591-1171791374/march_ks /tmp/evaluation/294591-1171791374/instance-294591-1171791374.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node2/watcher-294591-1171791374 -o ROOT/results/node2/solver-294591-1171791374 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/294591-1171791374/march_ks /tmp/evaluation/294591-1171791374/instance-294591-1171791374.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  f925586f9b717029fe6870824cb1d191

RANDOM SEED= 494424229

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node2.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		: 3000.247
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		: 3000.247
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:        253200 kB
Buffers:         52208 kB
Cached:        1612704 kB
SwapCached:          0 kB
Active:        1223260 kB
Inactive:       501564 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        253200 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2388 kB
Writeback:           0 kB
Mapped:          78800 kB
Slab:            63348 kB
Committed_AS:  1079488 kB
PageTables:       1812 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= 66545 MiB

End job on node2 on Sun Feb 18 09:37:23 UTC 2007