Trace number 371774

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 16.5525 16.7028

General information on the benchmark

Namerandom/OnTreshold/3SAT/v360/
unif-k3-r4.26-v360-c1533-S1370059435-05.UNSAT.shuffled.cnf
MD5SUM727fc359ee7c9f3d412b57a84acf2e25
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark16.0226
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1533
Sum of the clauses size4599
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31533
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 360 variables and 1533 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, 28 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 356 free variables and 1505 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.414
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 162 duplicate clauses
0.00/0.01	c resolvent_look() :: found 101 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1606 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 1606 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1606 / 360 ) = 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 |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 110 JD: 10
0.00/0.05	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
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c |***************************************************************
c |****************************************************************| 1 NC: 1580 JD: 10
0.59/0.63	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
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c |***************************************************************
c |****************************************************************| 2 NC: 7162 JD: 10
2.79/2.85	c |----------------------------------------------------------------|
c |*
c |**
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c |****************
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c |****************************************************************| 3 NC: 17721 JD: 10
6.99/7.05	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |*****
c |******
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c |***************************************************************
c |****************************************************************| 4 NC: 28535 JD: 10
11.39/11.49	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
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c |****************
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c |************************
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c |*******************************
c |********************************
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c |************************************
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c |***************************************************************
c |****************************************************************| 5 NC: 35992 JD: 10
14.49/14.60	c |----------------------------------------------------------------|
c |*
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c |***
c |****
c |*****
c |******
c |*******
c |********
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c |****************
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c |********************************
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c |*****************************************************
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c |****************************************************************| 6 NC: 39144 JD: 10
15.89/15.93	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 7 NC: 40318 JD: 10
16.39/16.44	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |********
c |*********
c |**********
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c |**************
c |****************
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c |******************
c |*******************
c |********************
c |************************
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c |****************************
c |********************************
c |*********************************
c |**********************************
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c |************************************
c |****************************************
c |************************************************
c |****************************************************************| 8 NC: 40550 JD: 10
16.49/16.54	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |********
c |****************
c |*****************
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c |********************
c |************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************| 9 NC: 40575 JD: 10
16.49/16.55	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 10 NC: 40576 JD: 10
16.49/16.55	c |----------------------------------------------------------------|
c |
16.49/16.55	c
16.49/16.55	c main():: nodeCount: 40576
16.49/16.55	c main():: dead ends in main: 1209
16.49/16.55	c main():: lookAheadCount: 2546016
16.49/16.55	c main():: unitResolveCount: 456369
16.49/16.55	c main():: time=16.550000
16.49/16.55	c main():: necessary_assignments: 8145
16.49/16.55	c main():: bin_sat: 0, bin_unsat 0
16.49/16.55	c main():: doublelook: #: 161982, succes #: 120740
16.49/16.55	c main():: doublelook: overall 6.616 of all possible doublelooks executed
16.49/16.55	c main():: doublelook: succesrate: 74.539, average DL_trigger: 5752.226
16.49/16.55	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node10/watcher-371774-1177545505 -o ROOT/results/node10/solver-371774-1177545505 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/371774-1177545505/march_ks /tmp/evaluation/371774-1177545505/instance-371774-1177545505.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): 7500 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: 0.00 0.05 0.33 3/77 12007
/proc/meminfo: memFree=1921544/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=792 CPUtime=0
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 119 0 0 0 0 0 0 0 18 0 1 0 230587995 811008 102 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134532912 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 198 102 52 123 0 73 0

[startup+0.0669591 s]
/proc/loadavg: 0.00 0.05 0.33 3/77 12007
/proc/meminfo: memFree=1921544/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1092 CPUtime=0.06
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 226 0 0 0 6 0 0 0 18 0 1 0 230587995 1118208 209 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 273 209 73 123 0 148 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1092

[startup+0.101966 s]
/proc/loadavg: 0.00 0.05 0.33 3/77 12007
/proc/meminfo: memFree=1921544/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1092 CPUtime=0.09
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 230 0 0 0 9 0 0 0 18 0 1 0 230587995 1118208 213 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 273 213 73 123 0 148 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1092

[startup+0.302009 s]
/proc/loadavg: 0.00 0.05 0.33 3/77 12007
/proc/meminfo: memFree=1921544/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1224 CPUtime=0.29
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 238 0 0 0 29 0 0 0 19 0 1 0 230587995 1253376 221 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538142 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 306 221 73 123 0 181 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1224

[startup+0.701095 s]
/proc/loadavg: 0.00 0.05 0.33 3/77 12007
/proc/meminfo: memFree=1921544/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1224 CPUtime=0.69
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 244 0 0 0 69 0 0 0 23 0 1 0 230587995 1253376 227 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134542764 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 306 227 73 123 0 181 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1224

[startup+1.50127 s]
/proc/loadavg: 0.00 0.05 0.33 2/78 12008
/proc/meminfo: memFree=1920832/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1224 CPUtime=1.49
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 250 0 0 0 149 0 0 0 25 0 1 0 230587995 1253376 233 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134542988 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 306 233 73 123 0 181 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1224

[startup+3.10161 s]
/proc/loadavg: 0.08 0.07 0.33 2/78 12008
/proc/meminfo: memFree=1920640/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1224 CPUtime=3.09
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 258 0 0 0 309 0 0 0 25 0 1 0 230587995 1253376 241 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538186 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 306 241 73 123 0 181 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1224

[startup+6.30129 s]
/proc/loadavg: 0.08 0.07 0.33 2/78 12008
/proc/meminfo: memFree=1920512/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1364 CPUtime=6.29
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 267 0 0 0 629 0 0 0 25 0 1 0 230587995 1396736 250 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134598628 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 341 250 73 123 0 216 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1364

[startup+12.7017 s]
/proc/loadavg: 0.15 0.08 0.34 2/78 12008
/proc/meminfo: memFree=1920320/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1364 CPUtime=12.69
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 275 0 0 0 1269 0 0 0 25 0 1 0 230587995 1396736 258 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134547622 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 341 258 73 123 0 216 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1364

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

[startup+14.306 s]
/proc/loadavg: 0.22 0.10 0.34 2/78 12008
/proc/meminfo: memFree=1920320/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1364 CPUtime=14.29
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 277 0 0 0 1429 0 0 0 25 0 1 0 230587995 1396736 260 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526471 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 341 260 73 123 0 216 0
Current children cumulated CPU time (s) 14.29
Current children cumulated vsize (KiB) 1364

[startup+15.9014 s]
/proc/loadavg: 0.22 0.10 0.34 2/78 12008
/proc/meminfo: memFree=1920320/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1364 CPUtime=15.89
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 290 0 0 0 1589 0 0 0 25 0 1 0 230587995 1396736 273 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134677364 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 341 273 73 123 0 216 0
Current children cumulated CPU time (s) 15.89
Current children cumulated vsize (KiB) 1364

[startup+16.3014 s]
/proc/loadavg: 0.22 0.10 0.34 2/78 12008
/proc/meminfo: memFree=1920320/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=1364 CPUtime=16.29
/proc/12007/stat : 12007 (march_ks) R 12005 12007 11953 0 -1 4194304 291 0 0 0 1629 0 0 0 25 0 1 0 230587995 1396736 274 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134542770 0 0 4096 0 0 0 0 17 1 0 0
/proc/12007/statm: 341 274 73 123 0 216 0
Current children cumulated CPU time (s) 16.29
Current children cumulated vsize (KiB) 1364

[startup+16.7015 s]
/proc/loadavg: 0.22 0.10 0.34 2/78 12008
/proc/meminfo: memFree=1920256/2055920 swapFree=4145432/4192956
[pid=12007] ppid=12005 vsize=0 CPUtime=16.54
/proc/12007/stat : 12007 (march_ks) D 12005 12007 11953 0 -1 4194308 292 0 0 0 1654 0 0 0 21 0 1 0 230587995 0 0 18446744073709551615 0 0 0 0 0 0 2147483391 4096 0 18446744072099781622 0 0 17 0 0 0
/proc/12007/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 16.54
Current children cumulated vsize (KiB) 0

Child status: 20
Real time (s): 16.7028
CPU time (s): 16.5525
CPU user time (s): 16.5495
CPU system time (s): 0.002999
CPU usage (%): 99.1
Max. virtual memory (cumulated for all children) (KiB): 1364

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 16.5495
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 292
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= 355

runsolver used 0.017997 second user time and 0.050992 second system time

The end

Launcher Data (download as text)

Begin job on node10 on Wed Apr 25 23:58:25 UTC 2007

IDJOB= 371774
IDBENCH= 19995
IDSOLVER= 180
FILE ID= node10/371774-1177545505

PBS_JOBID= 4696447

Free space on /tmp= 66286 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v360/unif-k3-r4.26-v360-c1533-S1370059435-05.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/371774-1177545505/march_ks /tmp/evaluation/371774-1177545505/instance-371774-1177545505.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node10/watcher-371774-1177545505 -o ROOT/results/node10/solver-371774-1177545505 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/371774-1177545505/march_ks /tmp/evaluation/371774-1177545505/instance-371774-1177545505.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  727fc359ee7c9f3d412b57a84acf2e25

RANDOM SEED= 580622871

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node10.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:       1921952 kB
Buffers:         19352 kB
Cached:          49852 kB
SwapCached:      15592 kB
Active:          67492 kB
Inactive:        24604 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1921952 kB
SwapTotal:     4192956 kB
SwapFree:      4145432 kB
Dirty:            2304 kB
Writeback:           0 kB
Mapped:          29596 kB
Slab:            27468 kB
Committed_AS:  3758184 kB
PageTables:       1708 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= 66286 MiB

End job on node10 on Wed Apr 25 23:58:42 UTC 2007