Trace number 299839

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 103.794 103.827

General information on the benchmark

Namerandom/OnTreshold/3SAT/v400/
unif-k3-r4.26-v400-c1704-S1013535775-14.UNSAT.shuffled.cnf
MD5SUM3a08d8a4e83b1d2d972d4be84e7630c8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark90.0793
Satisfiable
(Un)Satisfiability was proved
Number of variables400
Number of clauses1704
Sum of the clauses size5112
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31704
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 400 variables and 1704 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 9 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 399 free variables and 1695 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.447
0.00/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 169 duplicate clauses
0.00/0.01	c resolvent_look() :: found 87 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 400 variables and 1782 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 400 variabels and 1782 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1782 / 400 ) = 4.46
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c suggested doublelook initial :: 0
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************
c |********************************
c |****************************************************************| 0 NC: 151 JD: 16
0.00/0.07	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 1 NC: 1321 JD: 16
0.51/0.58	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 7384 JD: 16
3.27/3.31	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 26350 JD: 16
11.98/12.01	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 4 NC: 64416 JD: 16
29.70/29.71	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 5 NC: 112258 JD: 16
52.33/52.42	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 6 NC: 157084 JD: 16
74.35/74.46	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 7 NC: 187990 JD: 16
90.22/90.33	c |----------------------------------------------------------------|
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c |****************************************************************| 8 NC: 204358 JD: 16
99.02/99.13	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
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c |****************************************************************| 9 NC: 210581 JD: 16
102.50/102.61	c |----------------------------------------------------------------|
c |*c right child 56133 UNSAT by parent!
102.60/102.65	
c |**
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c |****
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c |****************************************************************| 10 NC: 212317 JD: 16
103.52/103.60	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 11 NC: 212618 JD: 16
103.73/103.79	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 12 NC: 212655 JD: 16
103.73/103.82	c |----------------------------------------------------------------|
c |****************
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c |****************************************************************| 13 NC: 212659 JD: 16
103.73/103.82	c |----------------------------------------------------------------|
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c |****************************************************************| 14 NC: 212660 JD: 16
103.73/103.82	c |----------------------------------------------------------------|
c |
103.73/103.82	c
103.73/103.82	c main():: nodeCount: 212660
103.73/103.82	c main():: dead ends in main: 4587
103.73/103.82	c main():: lookAheadCount: 15279345
103.73/103.82	c main():: unitResolveCount: 2741500
103.73/103.82	c main():: time=103.800000
103.73/103.82	c main():: necessary_assignments: 48912
103.73/103.82	c main():: bin_sat: 0, bin_unsat 0
103.73/103.82	c main():: doublelook: #: 912073, succes #: 680807
103.73/103.82	c main():: doublelook: overall 6.187 of all possible doublelooks executed
103.73/103.82	c main():: doublelook: succesrate: 74.644, average DL_trigger: 6112.469
103.73/103.82	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/node21/watcher-299839-1171878347 -o ROOT/results/node21/solver-299839-1171878347 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/299839-1171878347/march_ks /tmp/evaluation/299839-1171878347/instance-299839-1171878347.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: 0.94 0.99 0.99 3/77 29419
/proc/meminfo: memFree=584632/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=796 CPUtime=0
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 125 0 0 0 0 0 0 0 18 0 1 0 207788644 815104 107 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134532912 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 199 107 52 123 0 74 0

[startup+0.106666 s]
/proc/loadavg: 0.94 0.99 0.99 3/77 29419
/proc/meminfo: memFree=584632/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1192 CPUtime=0.1
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 243 0 0 0 10 0 0 0 18 0 1 0 207788644 1220608 225 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538162 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 298 225 73 123 0 173 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1192

[startup+0.51471 s]
/proc/loadavg: 0.94 0.99 0.99 3/77 29419
/proc/meminfo: memFree=584632/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1192 CPUtime=0.51
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 254 0 0 0 51 0 0 0 22 0 1 0 207788644 1220608 236 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134579126 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 298 236 73 123 0 173 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1192

[startup+1.3348 s]
/proc/loadavg: 0.94 0.99 0.99 3/78 29420
/proc/meminfo: memFree=583920/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1324 CPUtime=1.33
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 264 0 0 0 133 0 0 0 25 0 1 0 207788644 1355776 246 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134548907 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 331 246 73 123 0 206 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1324

[startup+2.97098 s]
/proc/loadavg: 0.94 0.99 0.99 2/78 29420
/proc/meminfo: memFree=583728/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1324 CPUtime=2.96
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 273 0 0 0 296 0 0 0 25 0 1 0 207788644 1355776 255 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526454 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 331 255 73 123 0 206 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1324

[startup+6.25334 s]
/proc/loadavg: 0.95 0.99 0.99 2/78 29420
/proc/meminfo: memFree=583600/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1324 CPUtime=6.25
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 286 0 0 0 625 0 0 0 25 0 1 0 207788644 1355776 268 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134590292 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 331 268 73 123 0 206 0
Current children cumulated CPU time (s) 6.25
Current children cumulated vsize (KiB) 1324

[startup+12.706 s]
/proc/loadavg: 0.95 0.99 0.99 2/78 29420
/proc/meminfo: memFree=583408/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1464 CPUtime=12.7
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 315 0 0 0 1270 0 0 0 25 0 1 0 207788644 1499136 297 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538186 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 366 297 73 123 0 241 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 1464

[startup+25.5094 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 29420
/proc/meminfo: memFree=583216/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1668 CPUtime=25.5
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 360 0 0 0 2550 0 0 0 25 0 1 0 207788644 1708032 342 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526476 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 417 342 73 123 0 292 0
Current children cumulated CPU time (s) 25.5
Current children cumulated vsize (KiB) 1668

[startup+51.1232 s]
/proc/loadavg: 0.97 0.99 0.99 2/78 29420
/proc/meminfo: memFree=582896/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=1920 CPUtime=51.1
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 429 0 0 0 5110 0 0 0 25 0 1 0 207788644 1966080 411 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 480 411 73 123 0 355 0
Current children cumulated CPU time (s) 51.1
Current children cumulated vsize (KiB) 1920

[startup+102.337 s]
/proc/loadavg: 0.99 0.99 0.99 2/78 29420
/proc/meminfo: memFree=581680/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=3380 CPUtime=102.29
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 731 0 0 0 10229 0 0 0 25 0 1 0 207788644 3461120 713 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526454 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 845 713 73 123 0 720 0
Current children cumulated CPU time (s) 102.29
Current children cumulated vsize (KiB) 3380

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

[startup+102.439 s]
/proc/loadavg: 0.99 0.99 0.99 2/78 29420
/proc/meminfo: memFree=581680/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=3380 CPUtime=102.4
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 732 0 0 0 10240 0 0 0 25 0 1 0 207788644 3461120 714 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526505 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 845 714 73 123 0 720 0
Current children cumulated CPU time (s) 102.4
Current children cumulated vsize (KiB) 3380

[startup+103.259 s]
/proc/loadavg: 0.99 0.99 0.99 2/78 29420
/proc/meminfo: memFree=581680/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=3380 CPUtime=103.22
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 738 0 0 0 10322 0 0 0 25 0 1 0 207788644 3461120 720 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526505 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 845 720 73 123 0 720 0
Current children cumulated CPU time (s) 103.22
Current children cumulated vsize (KiB) 3380

[startup+103.667 s]
/proc/loadavg: 0.99 0.99 0.99 2/78 29420
/proc/meminfo: memFree=581616/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=3380 CPUtime=103.63
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 742 0 0 0 10363 0 0 0 25 0 1 0 207788644 3461120 724 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538202 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 845 724 73 123 0 720 0
Current children cumulated CPU time (s) 103.63
Current children cumulated vsize (KiB) 3380

[startup+103.773 s]
/proc/loadavg: 0.99 0.99 0.99 2/78 29420
/proc/meminfo: memFree=581616/2055920 swapFree=4147448/4192956
[pid=29419] ppid=29417 vsize=3380 CPUtime=103.73
/proc/29419/stat : 29419 (march_ks) R 29417 29419 20839 0 -1 4194304 743 0 0 0 10373 0 0 0 25 0 1 0 207788644 3461120 725 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 1 0 0
/proc/29419/statm: 845 725 73 123 0 720 0
Current children cumulated CPU time (s) 103.73
Current children cumulated vsize (KiB) 3380

Child status: 20
Real time (s): 103.827
CPU time (s): 103.794
CPU user time (s): 103.787
CPU system time (s): 0.006998
CPU usage (%): 99.9682
Max. virtual memory (cumulated for all children) (KiB): 3380

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 103.787
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 744
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= 9
involuntary context switches= 2128

runsolver used 0.093985 second user time and 0.297954 second system time

The end

Launcher Data (download as text)

Begin job on node21 on Mon Feb 19 09:45:47 UTC 2007

IDJOB= 299839
IDBENCH= 20020
IDSOLVER= 111
FILE ID= node21/299839-1171878347

PBS_JOBID= 3839653

Free space on /tmp= 66562 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v400/unif-k3-r4.26-v400-c1704-S1013535775-14.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/299839-1171878347/march_ks /tmp/evaluation/299839-1171878347/instance-299839-1171878347.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node21/watcher-299839-1171878347 -o ROOT/results/node21/solver-299839-1171878347 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/299839-1171878347/march_ks /tmp/evaluation/299839-1171878347/instance-299839-1171878347.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  3a08d8a4e83b1d2d972d4be84e7630c8

RANDOM SEED= 100844907

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node21.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		: 3000.245
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		: 3000.245
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:        585040 kB
Buffers:         54588 kB
Cached:        1279016 kB
SwapCached:      15448 kB
Active:         731344 kB
Inactive:       627532 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        585040 kB
SwapTotal:     4192956 kB
SwapFree:      4147448 kB
Dirty:            2312 kB
Writeback:           0 kB
Mapped:          30116 kB
Slab:            97648 kB
Committed_AS:   700720 kB
PageTables:       1656 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 node21 on Mon Feb 19 09:47:31 UTC 2007