Trace number 310376

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 58.3001 58.3215

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S1071799860-07-UNSAT.cnf
MD5SUM6b6314740accc9375338f99409e94e23
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark58.3001
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.02	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.02	c main()::
0.00/0.02	c initFormula():: searching for DIMACS p-line....
0.00/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 630 variables and 2280 clauses.
0.00/0.02	c parseCNF():: parsing....
0.00/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.02	c runParser():: parsing was successful, warming up engines...
0.00/0.02	c simplify_formula():: removed 0 tautological, 42 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 623 free variables and 2238 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.629
0.00/0.02	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 93 duplicate clauses
0.00/0.02	c resolvent_look() :: found 53 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 630 variables and 2291 clauses.
0.00/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.02	c transformTo3SAT():: the transformation yielded 630 variabels and 2291 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2291 / 630 ) = 3.64
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c suggested doublelook initial :: 0
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 136 JD: 15
0.10/0.14	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************************************************************| 1 NC: 1092 JD: 15
1.02/1.03	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 4391 JD: 15
4.09/4.11	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 10498 JD: 15
9.82/9.83	c |----------------------------------------------------------------|
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c |****************************************************************| 4 NC: 20217 JD: 15
19.24/19.29	c |----------------------------------------------------------------|
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c |****************************************************************| 5 NC: 33151 JD: 15
32.45/32.55	c |----------------------------------------------------------------|
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c |****************************************************************| 6 NC: 44561 JD: 15
44.53/44.60	c |----------------------------------------------------------------|
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c |****************************************************************| 7 NC: 52074 JD: 15
52.82/52.89	c |----------------------------------------------------------------|
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c |****************************************************************| 8 NC: 55615 JD: 15
56.82/56.88	c |----------------------------------------------------------------|
c |********
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c |****************************************************************| 9 NC: 56639 JD: 15
58.04/58.10	c |----------------------------------------------------------------|
c |****************
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c |****************************************************************| 10 NC: 56805 JD: 15
58.25/58.29	c |----------------------------------------------------------------|
c |****************
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c |************************
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c |****************************************************************| 11 NC: 56827 JD: 15
58.25/58.31	c |----------------------------------------------------------------|
c |
58.25/58.31	c
58.25/58.31	c main():: nodeCount: 56827
58.25/58.31	c main():: dead ends in main: 364
58.25/58.31	c main():: lookAheadCount: 7062671
58.25/58.31	c main():: unitResolveCount: 1110817
58.25/58.31	c main():: time=58.300000
58.25/58.31	c main():: necessary_assignments: 23645
58.25/58.31	c main():: bin_sat: 0, bin_unsat 0
58.25/58.31	c main():: doublelook: #: 325268, succes #: 250910
58.25/58.31	c main():: doublelook: overall 4.735 of all possible doublelooks executed
58.25/58.31	c main():: doublelook: succesrate: 77.139, average DL_trigger: 7531.808
58.25/58.31	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/node65/watcher-310376-1172558831 -o ROOT/results/node65/solver-310376-1172558831 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310376-1172558831/march_ks /tmp/evaluation/310376-1172558831/instance-310376-1172558831.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: 0.91 0.97 0.99 3/64 23437
/proc/meminfo: memFree=1830296/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=928 CPUtime=0
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 137 0 0 0 0 0 0 0 18 0 1 0 275840624 950272 119 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134687937 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 232 119 49 123 0 107 0

[startup+0.106694 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 23437
/proc/meminfo: memFree=1830296/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=1540 CPUtime=0.1
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 304 0 0 0 10 0 0 0 18 0 1 0 275840624 1576960 286 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538131 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 385 286 73 123 0 260 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1540

[startup+0.514761 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 23437
/proc/meminfo: memFree=1830296/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=1540 CPUtime=0.51
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 323 0 0 0 51 0 0 0 21 0 1 0 275840624 1576960 305 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538609 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 385 305 73 123 0 260 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1540

[startup+1.3349 s]
/proc/loadavg: 0.91 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1829264/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=1672 CPUtime=1.33
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 338 0 0 0 133 0 0 0 25 0 1 0 275840624 1712128 320 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134597951 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 418 320 73 123 0 293 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1672

[startup+2.97417 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1829136/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=1672 CPUtime=2.97
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 347 0 0 0 297 0 0 0 25 0 1 0 275840624 1712128 329 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 418 329 73 123 0 293 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 1672

[startup+6.2497 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828944/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=1672 CPUtime=6.24
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 366 0 0 0 624 0 0 0 25 0 1 0 275840624 1712128 348 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542767 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 418 348 73 123 0 293 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1672

[startup+12.7028 s]
/proc/loadavg: 0.93 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828752/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=1804 CPUtime=12.69
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 397 0 0 0 1269 0 0 0 25 0 1 0 275840624 1847296 379 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134598349 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 451 379 73 123 0 326 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1804

[startup+25.5059 s]
/proc/loadavg: 0.94 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828560/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2008 CPUtime=25.49
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 450 0 0 0 2549 0 0 0 25 0 1 0 275840624 2056192 432 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542945 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 502 432 73 123 0 377 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 2008

[startup+51.1121 s]
/proc/loadavg: 0.96 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828240/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2404 CPUtime=51.08
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 537 0 0 0 5108 0 0 0 25 0 1 0 275840624 2461696 519 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134522672 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 601 519 73 123 0 476 0
Current children cumulated CPU time (s) 51.08
Current children cumulated vsize (KiB) 2404

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

[startup+52.4423 s]
/proc/loadavg: 0.96 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828176/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2404 CPUtime=52.41
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 542 0 0 0 5241 0 0 0 25 0 1 0 275840624 2461696 524 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538142 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 601 524 73 123 0 476 0
Current children cumulated CPU time (s) 52.41
Current children cumulated vsize (KiB) 2404

[startup+55.7198 s]
/proc/loadavg: 0.96 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828112/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2548 CPUtime=55.69
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 551 0 0 0 5569 0 0 0 25 0 1 0 275840624 2609152 533 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526471 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 637 533 73 123 0 512 0
Current children cumulated CPU time (s) 55.69
Current children cumulated vsize (KiB) 2548

[startup+57.3561 s]
/proc/loadavg: 0.96 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828112/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2776 CPUtime=57.33
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 557 0 0 0 5733 0 0 0 25 0 1 0 275840624 2842624 539 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538176 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 694 539 73 123 0 569 0
Current children cumulated CPU time (s) 57.33
Current children cumulated vsize (KiB) 2776

[startup+57.7682 s]
/proc/loadavg: 0.97 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828112/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2776 CPUtime=57.74
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 558 0 0 0 5774 0 0 0 25 0 1 0 275840624 2842624 540 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542595 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 694 540 73 123 0 569 0
Current children cumulated CPU time (s) 57.74
Current children cumulated vsize (KiB) 2776

[startup+58.1762 s]
/proc/loadavg: 0.97 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828112/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2776 CPUtime=58.15
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 560 0 0 0 5815 0 0 0 25 0 1 0 275840624 2842624 542 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542401 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 694 542 73 123 0 569 0
Current children cumulated CPU time (s) 58.15
Current children cumulated vsize (KiB) 2776

[startup+58.2782 s]
/proc/loadavg: 0.97 0.97 0.99 2/65 23438
/proc/meminfo: memFree=1828112/2055920 swapFree=4172316/4192956
[pid=23437] ppid=23435 vsize=2776 CPUtime=58.25
/proc/23437/stat : 23437 (march_ks) R 23435 23437 23197 0 -1 4194304 561 0 0 0 5825 0 0 0 25 0 1 0 275840624 2842624 543 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526400 0 0 4096 0 0 0 0 17 1 0 0
/proc/23437/statm: 694 543 73 123 0 569 0
Current children cumulated CPU time (s) 58.25
Current children cumulated vsize (KiB) 2776

Child status: 20
Real time (s): 58.3215
CPU time (s): 58.3001
CPU user time (s): 58.2931
CPU system time (s): 0.006998
CPU usage (%): 99.9633
Max. virtual memory (cumulated for all children) (KiB): 2776

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 58.2931
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= 562
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= 117

runsolver used 0.052991 second user time and 0.12698 second system time

The end

Launcher Data (download as text)

Begin job on node65 on Tue Feb 27 06:47:11 UTC 2007

IDJOB= 310376
IDBENCH= 20285
IDSOLVER= 111
FILE ID= node65/310376-1172558831

PBS_JOBID= 3971881

Free space on /tmp= 66559 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S1071799860-07-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310376-1172558831/march_ks /tmp/evaluation/310376-1172558831/instance-310376-1172558831.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node65/watcher-310376-1172558831 -o ROOT/results/node65/solver-310376-1172558831 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310376-1172558831/march_ks /tmp/evaluation/310376-1172558831/instance-310376-1172558831.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  6b6314740accc9375338f99409e94e23

RANDOM SEED= 906143569

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node65.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:       1830704 kB
Buffers:         29368 kB
Cached:         136724 kB
SwapCached:      14924 kB
Active:          79728 kB
Inactive:       107916 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1830704 kB
SwapTotal:     4192956 kB
SwapFree:      4172316 kB
Dirty:            2300 kB
Writeback:           0 kB
Mapped:          15312 kB
Slab:            23508 kB
Committed_AS:   649424 kB
PageTables:       1456 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= 66559 MiB

End job on node65 on Tue Feb 27 06:48:09 UTC 2007