Trace number 291721

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 36.5154 36.5279

General information on the benchmark

Namerandom/OnTreshold/5SAT/v80/
unif-k5-r21.3-v80-c1704-S1260745628-20.UNSAT.shuffled.cnf
MD5SUM52283ce63e705369937455e1ca21a476
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark36.5154
Satisfiable
(Un)Satisfiability was proved
Number of variables80
Number of clauses1704
Sum of the clauses size8520
Maximum clause length5
Minimum clause length5
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 51704
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.03	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.03	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.03	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.03	c main()::
0.00/0.03	c initFormula():: searching for DIMACS p-line....
0.00/0.03	c full lookahead due to high density!
0.00/0.03	c initFormula():: the DIMACS p-line indicates a CNF of 80 variables and 1704 clauses.
0.00/0.03	c parseCNF():: parsing....
0.00/0.03	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.03	c runParser():: parsing was successful, warming up engines...
0.00/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.03	c preprocessing fase I completed:: there are now 80 free variables and 1704 clauses.
0.00/0.03	c stat :: sign balance is biased by 0.042
0.00/0.03	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.03	c using k-SAT heuristics (size based diff)
0.00/0.03	c longest clause has size 5
0.00/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 6 duplicate clauses
0.00/0.03	c resolvent_look() :: found 4 resolvents
0.00/0.03	c main():: clause / variable ratio: ( 1708 / 80 ) = 21.35
0.00/0.03	c longest clause has size 5
0.00/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.03	c dynamic_preselect_setsize :: off
0.00/0.03	c suggested doublelook initial :: 0
0.00/0.03	c main():: all systems go!
0.00/0.03	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 137 JD: 14
0.00/0.07	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
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c |****************************************************************| 1 NC: 871 JD: 14
0.30/0.31	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 4300 JD: 14
1.43/1.47	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 13542 JD: 14
4.51/4.55	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 4 NC: 31685 JD: 14
10.64/10.75	c |----------------------------------------------------------------|
c |*
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c |***
c |****
c |*****
c |******
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c |****************************************************************| 5 NC: 54944 JD: 14
18.84/18.88	c |----------------------------------------------------------------|
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c |****************************************************************| 6 NC: 76663 JD: 14
26.62/26.66	c |----------------------------------------------------------------|
c |*
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c |***************************************************************
c |****************************************************************| 7 NC: 91479 JD: 14
32.15/32.23	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
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c |***************************************************************
c |****************************************************************| 8 NC: 98649 JD: 14
35.12/35.19	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
c |*********
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c |****************
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c |********************************************************
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c |****************************************************************| 9 NC: 100995 JD: 14
36.14/36.24	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 |****************************************************************| 10 NC: 101473 JD: 14
36.45/36.48	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 |************************
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c |**************************
c |****************************
c |********************************
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c |************************************************
c |****************************************************************| 11 NC: 101541 JD: 14
36.45/36.52	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |*****
c |******
c |*******
c |********
c |*********
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c |****************
c |********************************
c |****************************************************************| 12 NC: 101552 JD: 14
36.45/36.52	c |----------------------------------------------------------------|
c |
36.45/36.52	c
36.45/36.52	c main():: nodeCount: 101552
36.45/36.52	c main():: dead ends in main: 155
36.45/36.52	c main():: lookAheadCount: 9232275
36.45/36.52	c main():: unitResolveCount: 291214
36.45/36.52	c main():: time=36.510000
36.45/36.52	c main():: necessary_assignments: 1160
36.45/36.52	c main():: bin_sat: 0, bin_unsat 0
36.45/36.52	c main():: doublelook: #: 416442, succes #: 344057
36.45/36.52	c main():: doublelook: overall 4.581 of all possible doublelooks executed
36.45/36.52	c main():: doublelook: succesrate: 82.618, average DL_trigger: 22.236
36.45/36.52	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-291721-1171745528 -o ROOT/results/node2/solver-291721-1171745528 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/291721-1171745528/march_ks /tmp/evaluation/291721-1171745528/instance-291721-1171745528.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 0.99 0.86 3/77 13445
/proc/meminfo: memFree=99128/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=788 CPUtime=0
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 113 0 0 0 0 0 0 0 18 0 1 0 194507735 806912 95 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134561792 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 197 95 50 123 0 72 0

[startup+0.107135 s]
/proc/loadavg: 1.00 0.99 0.86 3/77 13445
/proc/meminfo: memFree=99128/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=920 CPUtime=0.1
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 177 0 0 0 10 0 0 0 18 0 1 0 194507735 942080 159 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541800 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 230 159 72 123 0 105 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 920

[startup+0.515178 s]
/proc/loadavg: 1.00 0.99 0.86 3/77 13445
/proc/meminfo: memFree=99128/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=920 CPUtime=0.51
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 177 0 0 0 51 0 0 0 21 0 1 0 194507735 942080 159 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134598763 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 230 159 72 123 0 105 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 920

[startup+1.33626 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=98736/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=920 CPUtime=1.33
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 177 0 0 0 133 0 0 0 25 0 1 0 194507735 942080 159 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134527019 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 230 159 72 123 0 105 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 920

[startup+2.97844 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=98608/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=920 CPUtime=2.97
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 177 0 0 0 297 0 0 0 25 0 1 0 194507735 942080 159 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526944 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 230 159 72 123 0 105 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 920

[startup+6.25477 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=98416/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1096 CPUtime=6.24
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 193 0 0 0 624 0 0 0 25 0 1 0 194507735 1122304 175 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537979 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 274 175 72 123 0 149 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1096

[startup+12.7114 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=98160/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1240 CPUtime=12.7
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 246 0 0 0 1270 0 0 0 25 0 1 0 194507735 1269760 226 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526957 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 310 226 72 123 0 185 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 1240

[startup+25.5128 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97904/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1492 CPUtime=25.49
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 298 0 0 0 2549 0 0 0 25 0 1 0 194507735 1527808 278 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134541814 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 373 278 72 123 0 248 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 1492

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

[startup+26.2318 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97904/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1492 CPUtime=26.21
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 302 0 0 0 2621 0 0 0 25 0 1 0 194507735 1527808 282 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134537989 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 373 282 72 123 0 248 0
Current children cumulated CPU time (s) 26.21
Current children cumulated vsize (KiB) 1492

[startup+32.7895 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97776/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1720 CPUtime=32.77
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 340 0 0 0 3277 0 0 0 25 0 1 0 194507735 1761280 320 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134538142 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 430 320 72 123 0 305 0
Current children cumulated CPU time (s) 32.77
Current children cumulated vsize (KiB) 1720

[startup+34.4257 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97712/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1720 CPUtime=34.4
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 352 0 0 0 3440 0 0 0 25 0 1 0 194507735 1761280 332 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585110 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 430 332 72 123 0 305 0
Current children cumulated CPU time (s) 34.4
Current children cumulated vsize (KiB) 1720

[startup+35.2458 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97712/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1720 CPUtime=35.22
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 358 0 0 0 3522 0 0 0 25 0 1 0 194507735 1761280 338 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134526930 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 430 338 72 123 0 305 0
Current children cumulated CPU time (s) 35.22
Current children cumulated vsize (KiB) 1720

[startup+36.0619 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97648/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1720 CPUtime=36.04
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 365 0 0 0 3604 0 0 0 25 0 1 0 194507735 1761280 345 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134564829 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 430 345 72 123 0 305 0
Current children cumulated CPU time (s) 36.04
Current children cumulated vsize (KiB) 1720

[startup+36.4759 s]
/proc/loadavg: 1.00 0.99 0.86 2/78 13446
/proc/meminfo: memFree=97648/2055920 swapFree=4192812/4192956
[pid=13445] ppid=13443 vsize=1720 CPUtime=36.45
/proc/13445/stat : 13445 (march_ks) R 13443 13445 13187 0 -1 4194304 368 0 0 0 3645 0 0 0 25 0 1 0 194507735 1761280 348 18446744073709551615 134512640 135019032 4294956624 18446744073709551615 134585246 0 0 4096 0 0 0 0 17 1 0 0
/proc/13445/statm: 430 348 72 123 0 305 0
Current children cumulated CPU time (s) 36.45
Current children cumulated vsize (KiB) 1720

Child status: 20
Real time (s): 36.5279
CPU time (s): 36.5154
CPU user time (s): 36.5074
CPU system time (s): 0.007998
CPU usage (%): 99.9658
Max. virtual memory (cumulated for all children) (KiB): 1720

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 36.5074
system time used= 0.007998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 371
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= 770

runsolver used 0.053991 second user time and 0.090986 second system time

The end

Launcher Data (download as text)

Begin job on node2 on Sat Feb 17 20:52:08 UTC 2007

IDJOB= 291721
IDBENCH= 19822
IDSOLVER= 111
FILE ID= node2/291721-1171745528

PBS_JOBID= 3839266

Free space on /tmp= 66545 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/5SAT/v80/unif-k5-r21.3-v80-c1704-S1260745628-20.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/291721-1171745528/march_ks /tmp/evaluation/291721-1171745528/instance-291721-1171745528.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node2/watcher-291721-1171745528 -o ROOT/results/node2/solver-291721-1171745528 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/291721-1171745528/march_ks /tmp/evaluation/291721-1171745528/instance-291721-1171745528.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  52283ce63e705369937455e1ca21a476

RANDOM SEED= 868864251

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:         99536 kB
Buffers:         54708 kB
Cached:        1763340 kB
SwapCached:          0 kB
Active:        1386792 kB
Inactive:       491040 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:         99536 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2316 kB
Writeback:           0 kB
Mapped:          78728 kB
Slab:            64012 kB
Committed_AS:  1053244 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 Sat Feb 17 20:52:45 UTC 2007