Trace number 1626809

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
SAT07 reference solver: March KS 2007-02-08UNSAT 15.6256 15.6309

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S680239195-053.cnf
MD5SUM5093c545fdc7c5094d7e8f31c2f6e759
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark12.829
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1530
Sum of the clauses size4590
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31530
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

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 360 variables and 1530 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, 0 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 360 free variables and 1530 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.463
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 158 duplicate clauses
0.00/0.01	c resolvent_look() :: found 92 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1622 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 360 variabels and 1622 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1622 / 360 ) = 4.51
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 |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 119 JD: 14
0.02/0.05	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
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c |****************************************************************| 1 NC: 609 JD: 14
0.20/0.20	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************
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c |****************************************************************| 2 NC: 2607 JD: 14
0.80/0.88	c |----------------------------------------------------------------|
c |*
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c |****************
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c |****************************************************************| 3 NC: 7711 JD: 14
2.60/2.66	c |----------------------------------------------------------------|
c |*
c |**
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c |***************************************************************
c |****************************************************************| 4 NC: 16246 JD: 14
5.69/5.75	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
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c |********************************
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c |***************************************************************
c |****************************************************************| 5 NC: 26395 JD: 14
9.59/9.61	c |----------------------------------------------------------------|
c |*
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c |****
c |*****
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c |***************************************************************
c |****************************************************************| 6 NC: 34430 JD: 14
12.79/12.85	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
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c |********
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c |****************************************************************| 7 NC: 38728 JD: 14
14.69/14.73	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
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c |************
c |*************
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c |****************
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c |********************************
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c |***************************************************************
c |****************************************************************| 8 NC: 40235 JD: 14
15.40/15.42	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |******
c |*******
c |********
c |*********
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c |************
c |*************
c |**************
c |***************
c |****************
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c |************************
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c |************************************************
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c |****************************************************
c |*****************************************************
c |******************************************************
c |********************************************************
c |****************************************************************| 9 NC: 40628 JD: 14
15.59/15.61	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |*********
c |**********
c |***********
c |************
c |*************
c |**************
c |****************
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c |************************
c |********************************
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c |**********************************
c |***********************************
c |************************************
c |*************************************
c |**************************************
c |***************************************
c |****************************************
c |************************************************
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c |****************************************************
c |********************************************************
c |****************************************************************| 10 NC: 40662 JD: 14
15.59/15.62	c |----------------------------------------------------------------|
c |********
c |*********
c |**********
c |************
c |****************
c |********************************
c |****************************************************************| 11 NC: 40664 JD: 14
15.59/15.63	c |----------------------------------------------------------------|
c |
15.59/15.63	c
15.59/15.63	c main():: nodeCount: 40664
15.59/15.63	c main():: dead ends in main: 949
15.59/15.63	c main():: lookAheadCount: 2590268
15.59/15.63	c main():: unitResolveCount: 502163
15.59/15.63	c main():: time=15.620000
15.59/15.63	c main():: necessary_assignments: 7995
15.59/15.63	c main():: bin_sat: 0, bin_unsat 0
15.59/15.63	c main():: doublelook: #: 162814, succes #: 120750
15.59/15.63	c main():: doublelook: overall 6.527 of all possible doublelooks executed
15.59/15.63	c main():: doublelook: succesrate: 74.164, average DL_trigger: 5652.415
15.59/15.63	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1626809-1240138460/watcher-1626809-1240138460 -o /tmp/evaluation-result-1626809-1240138460/solver-1626809-1240138460 -C 5000 -W 6000 -M 1800 --output-limit 1,15 HOME/march_ks HOME/instance-1626809-1240138460.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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 3/67 23886
/proc/meminfo: memFree=1406608/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=792 CPUtime=0
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 130 0 0 0 0 0 0 0 18 0 1 0 41872128 811008 113 1992294400 134512640 135019032 4294956240 18446744073709551615 134661059 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 198 113 63 123 0 73 0

[startup+0.024454 s]
/proc/loadavg: 1.00 1.00 1.00 3/67 23886
/proc/meminfo: memFree=1406608/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1092 CPUtime=0.02
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 218 0 0 0 2 0 0 0 18 0 1 0 41872128 1118208 201 1992294400 134512640 135019032 4294956240 18446744073709551615 134526429 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 273 201 73 123 0 148 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1092

[startup+0.10146 s]
/proc/loadavg: 1.00 1.00 1.00 3/67 23886
/proc/meminfo: memFree=1406608/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1092 CPUtime=0.1
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 230 0 0 0 10 0 0 0 18 0 1 0 41872128 1118208 213 1992294400 134512640 135019032 4294956240 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 273 213 73 123 0 148 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1092

[startup+0.301478 s]
/proc/loadavg: 1.00 1.00 1.00 3/67 23886
/proc/meminfo: memFree=1406608/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1224 CPUtime=0.3
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 240 0 0 0 30 0 0 0 19 0 1 0 41872128 1253376 223 1992294400 134512640 135019032 4294956240 18446744073709551615 134538197 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 306 223 73 123 0 181 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1224

[startup+0.701514 s]
/proc/loadavg: 1.00 1.00 1.00 3/67 23886
/proc/meminfo: memFree=1406608/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1224 CPUtime=0.7
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 250 0 0 0 70 0 0 0 23 0 1 0 41872128 1253376 233 1992294400 134512640 135019032 4294956240 18446744073709551615 134541111 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 306 233 73 123 0 181 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 1224

[startup+1.50158 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405896/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1224 CPUtime=1.5
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 260 0 0 0 150 0 0 0 22 0 1 0 41872128 1253376 243 1992294400 134512640 135019032 4294956240 18446744073709551615 134542770 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 306 243 73 123 0 181 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 1224

[startup+3.10173 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405768/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1404 CPUtime=3.09
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 277 0 0 0 309 0 0 0 25 0 1 0 41872128 1437696 260 1992294400 134512640 135019032 4294956240 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 351 260 73 123 0 226 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1404

[startup+6.30202 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405512/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1404 CPUtime=6.29
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 299 0 0 0 629 0 0 0 25 0 1 0 41872128 1437696 282 1992294400 134512640 135019032 4294956240 18446744073709551615 134538131 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 351 282 73 123 0 226 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1404

[startup+12.7016 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405128/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1708 CPUtime=12.69
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 378 0 0 0 1269 0 0 0 25 0 1 0 41872128 1748992 361 1992294400 134512640 135019032 4294956240 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 427 361 73 123 0 302 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1708

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

[startup+14.3067 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405064/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1860 CPUtime=14.3
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 392 0 0 0 1430 0 0 0 25 0 1 0 41872128 1904640 375 1992294400 134512640 135019032 4294956240 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 465 375 73 123 0 340 0
Current children cumulated CPU time (s) 14.3
Current children cumulated vsize (KiB) 1860

[startup+15.1028 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405064/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1860 CPUtime=15.09
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 399 0 0 0 1509 0 0 0 25 0 1 0 41872128 1904640 382 1992294400 134512640 135019032 4294956240 18446744073709551615 134542301 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 465 382 73 123 0 340 0
Current children cumulated CPU time (s) 15.09
Current children cumulated vsize (KiB) 1860

[startup+15.5029 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405000/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1860 CPUtime=15.49
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 402 0 0 0 1549 0 0 0 25 0 1 0 41872128 1904640 385 1992294400 134512640 135019032 4294956240 18446744073709551615 134597979 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 465 385 73 123 0 340 0
Current children cumulated CPU time (s) 15.49
Current children cumulated vsize (KiB) 1860

[startup+15.6028 s]
/proc/loadavg: 1.00 1.00 1.00 2/68 23887
/proc/meminfo: memFree=1405000/2055920 swapFree=4192956/4192956
[pid=23886] ppid=23884 vsize=1860 CPUtime=15.59
/proc/23886/stat : 23886 (march_ks) R 23884 23886 23728 0 -1 4194304 403 0 0 0 1559 0 0 0 25 0 1 0 41872128 1904640 386 1992294400 134512640 135019032 4294956240 18446744073709551615 134526473 0 0 4096 0 0 0 0 17 0 0 0
/proc/23886/statm: 465 386 73 123 0 340 0
Current children cumulated CPU time (s) 15.59
Current children cumulated vsize (KiB) 1860

Child status: 20
Real time (s): 15.6309
CPU time (s): 15.6256
CPU user time (s): 15.6236
CPU system time (s): 0.001999
CPU usage (%): 99.9659
Max. virtual memory (cumulated for all children) (KiB): 1860

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 15.6236
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 404
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= 3
involuntary context switches= 53

runsolver used 0.018997 second user time and 0.057991 second system time

The end

Launcher Data 

Begin job on node68 at 2009-04-19 12:54:20
IDJOB=1626809
IDBENCH=70639
IDSOLVER=582
FILE ID=node68/1626809-1240138460
PBS_JOBID= 9157857
Free space on /tmp= 66556 MiB

SOLVER NAME= SAT07 reference solver: March KS 2007-02-08
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S680239195-053.cnf
COMMAND LINE= HOME/march_ks BENCHNAME            
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1626809-1240138460/watcher-1626809-1240138460 -o /tmp/evaluation-result-1626809-1240138460/solver-1626809-1240138460 -C 5000 -W 6000 -M 1800 --output-limit 1,15  HOME/march_ks HOME/instance-1626809-1240138460.cnf            

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 5093c545fdc7c5094d7e8f31c2f6e759
RANDOM SEED=829687596

node68.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.223
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		: 3000.223
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:       1407088 kB
Buffers:         73964 kB
Cached:         498732 kB
SwapCached:          0 kB
Active:         184996 kB
Inactive:       404124 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1407088 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:            2884 kB
Writeback:           0 kB
Mapped:          26452 kB
Slab:            45332 kB
Committed_AS:   170304 kB
PageTables:       1560 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66556 MiB
End job on node68 at 2009-04-19 12:54:35