Trace number 1517989

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
march_hi hiUNSAT 15.2117 15.2213

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S23373420-028.cnf
MD5SUMc80ac2513e7d4a317f260e6d71a9bb08
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark15.2117
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) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
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 0.476
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 163 duplicate clauses
0.00/0.01	c resolvent_look() :: found 97 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1627 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 1627 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1627 / 360 ) = 4.52
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 number of free variables = 360
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/10) NodeCount: 177
0.06/0.08	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
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c |****************************************************************| ( 1/10) NodeCount: 1982
0.80/0.87	c |----------------------------------------------------------------|
c |*
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c |***************************************************************
c |****************************************************************| ( 2/10) NodeCount: 6846
2.99/3.03	c |----------------------------------------------------------------|
c |*
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c |****************
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c |****************************************************************| ( 3/10) NodeCount: 14668
6.60/6.64	c |----------------------------------------------------------------|
c |*
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c |****
c |*****
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c |****************
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c |************************
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c |********************************
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c |***************************************************************
c |****************************************************************| ( 4/10) NodeCount: 22330
10.39/10.42	c |----------------------------------------------------------------|
c |*
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c |***
c |****
c |*****
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c |****************
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c |************************
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c |****************************
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c |*******************************
c |********************************
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c |************************************
c |*************************************
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c |****************************************
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c |***************************************************************
c |****************************************************************| ( 5/10) NodeCount: 27526
13.19/13.23	c |----------------------------------------------------------------|
c |*
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c |***
c |****
c |*****
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c |****************
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c |********************************
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c |****************************************
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c |********************************************
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c |**********************************************
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c |********************************************************
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c |****************************************************************| ( 6/10) NodeCount: 29904
14.59/14.62	c |----------------------------------------------------------------|
c |*
c |**
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c |*****
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c |************
c |*************
c |**************
c |***************
c |****************
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c |*******************
c |********************
c |*********************
c |**********************
c |************************
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c |****************************
c |*****************************
c |******************************
c |********************************
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c |**********************************
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c |****************************************************************| ( 7/10) NodeCount: 30537
14.99/15.07	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
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c |**********
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c |************
c |*************
c |**************
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |********************************
c |*********************************
c |**********************************
c |***********************************
c |************************************
c |*************************************
c |**************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |************************************************
c |****************************************************************| ( 8/10) NodeCount: 30708
15.09/15.20	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |*********
c |**********
c |************
c |****************
c |********************************
c |****************************************************************| ( 9/10) NodeCount: 30720
15.19/15.21	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| (10/10) NodeCount: 30729
15.19/15.22	c |----------------------------------------------------------------|
c |
15.19/15.22	c
15.19/15.22	c main():: nodeCount: 30729
15.19/15.22	c main():: dead ends in main: 656
15.19/15.22	c main():: lookAheadCount: 2344137
15.19/15.22	c main():: unitResolveCount: 308457
15.19/15.22	c main():: time=15.210000
15.19/15.22	c main():: necessary_assignments: 6869
15.19/15.22	c main():: bin_sat: 0, bin_unsat 0
15.19/15.22	c main():: doublelook: #: 127514, succes #: 93540
15.19/15.22	c main():: doublelook: overall 5.617 of all possible doublelooks executed
15.19/15.22	c main():: doublelook: succesrate: 73.357, average DL_trigger: 47.323
15.19/15.22	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1517989-1238293663/watcher-1517989-1238293663 -o /tmp/evaluation-result-1517989-1238293663/solver-1517989-1238293663 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1517989-1238293663.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 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: 0.93 1.13 1.08 3/68 12693
/proc/meminfo: memFree=1301304/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=972 CPUtime=0
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 134 0 0 0 0 0 0 0 18 0 1 0 1102027897 995328 117 1992294400 134512640 135197378 4294956240 18446744073709551615 134560968 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 243 118 67 167 0 74 0

[startup+0.0687729 s]
/proc/loadavg: 0.93 1.13 1.08 3/68 12693
/proc/meminfo: memFree=1301304/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1508 CPUtime=0.06
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 241 0 0 0 6 0 0 0 18 0 1 0 1102027897 1544192 224 1992294400 134512640 135197378 4294956240 18446744073709551615 134541268 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 377 224 91 167 0 208 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1508

[startup+0.101775 s]
/proc/loadavg: 0.93 1.13 1.08 3/68 12693
/proc/meminfo: memFree=1301304/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1508 CPUtime=0.1
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 243 0 0 0 10 0 0 0 18 0 1 0 1102027897 1544192 226 1992294400 134512640 135197378 4294956240 18446744073709551615 134525420 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 377 226 91 167 0 208 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1508

[startup+0.301795 s]
/proc/loadavg: 0.93 1.13 1.08 3/68 12693
/proc/meminfo: memFree=1301304/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1508 CPUtime=0.3
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 251 0 0 0 30 0 0 0 19 0 1 0 1102027897 1544192 234 1992294400 134512640 135197378 4294956240 18446744073709551615 134525416 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 377 234 91 167 0 208 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1508

[startup+0.701834 s]
/proc/loadavg: 0.93 1.13 1.08 3/68 12693
/proc/meminfo: memFree=1301304/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1640 CPUtime=0.7
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 260 0 0 0 70 0 0 0 22 0 1 0 1102027897 1679360 243 1992294400 134512640 135197378 4294956240 18446744073709551615 134525272 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 410 243 91 167 0 241 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 1640

[startup+1.50191 s]
/proc/loadavg: 0.93 1.13 1.08 2/69 12694
/proc/meminfo: memFree=1300656/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1640 CPUtime=1.5
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 270 0 0 0 150 0 0 0 25 0 1 0 1102027897 1679360 253 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 410 253 91 167 0 241 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 1640

[startup+3.10107 s]
/proc/loadavg: 0.93 1.13 1.08 2/69 12694
/proc/meminfo: memFree=1300464/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1640 CPUtime=3.09
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 275 0 0 0 309 0 0 0 25 0 1 0 1102027897 1679360 258 1992294400 134512640 135197378 4294956240 18446744073709551615 134525291 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 410 258 91 167 0 241 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1640

[startup+6.30139 s]
/proc/loadavg: 0.93 1.13 1.08 2/69 12694
/proc/meminfo: memFree=1300344/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1640 CPUtime=6.29
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 284 0 0 0 629 0 0 0 25 0 1 0 1102027897 1679360 267 1992294400 134512640 135197378 4294956240 18446744073709551615 134539249 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 410 267 91 167 0 241 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1640

[startup+12.702 s]
/proc/loadavg: 0.94 1.12 1.08 2/69 12694
/proc/meminfo: memFree=1300216/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1804 CPUtime=12.69
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 300 0 0 0 1269 0 0 0 25 0 1 0 1102027897 1847296 283 1992294400 134512640 135197378 4294956240 18446744073709551615 134525324 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 451 283 91 167 0 282 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1804

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

[startup+14.3052 s]
/proc/loadavg: 0.94 1.12 1.08 2/69 12694
/proc/meminfo: memFree=1300216/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1804 CPUtime=14.29
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 301 0 0 0 1429 0 0 0 25 0 1 0 1102027897 1847296 284 1992294400 134512640 135197378 4294956240 18446744073709551615 134525358 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 451 284 91 167 0 282 0
Current children cumulated CPU time (s) 14.29
Current children cumulated vsize (KiB) 1804

[startup+14.7012 s]
/proc/loadavg: 0.94 1.12 1.08 2/69 12694
/proc/meminfo: memFree=1300216/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1804 CPUtime=14.69
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 302 0 0 0 1469 0 0 0 25 0 1 0 1102027897 1847296 285 1992294400 134512640 135197378 4294956240 18446744073709551615 134525291 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 451 285 91 167 0 282 0
Current children cumulated CPU time (s) 14.69
Current children cumulated vsize (KiB) 1804

[startup+15.1013 s]
/proc/loadavg: 0.94 1.12 1.08 2/69 12694
/proc/meminfo: memFree=1300216/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1804 CPUtime=15.09
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 303 0 0 0 1509 0 0 0 25 0 1 0 1102027897 1847296 286 1992294400 134512640 135197378 4294956240 18446744073709551615 134542220 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 451 286 91 167 0 282 0
Current children cumulated CPU time (s) 15.09
Current children cumulated vsize (KiB) 1804

[startup+15.2013 s]
/proc/loadavg: 0.94 1.12 1.08 2/69 12694
/proc/meminfo: memFree=1300216/2055920 swapFree=4175244/4192956
[pid=12693] ppid=12691 vsize=1804 CPUtime=15.19
/proc/12693/stat : 12693 (march_hi) R 12691 12693 9309 0 -1 4194304 303 0 0 0 1519 0 0 0 25 0 1 0 1102027897 1847296 286 1992294400 134512640 135197378 4294956240 18446744073709551615 134604629 0 0 4096 0 0 0 0 17 1 0 0
/proc/12693/statm: 451 286 91 167 0 282 0
Current children cumulated CPU time (s) 15.19
Current children cumulated vsize (KiB) 1804

Child status: 20
Real time (s): 15.2213
CPU time (s): 15.2117
CPU user time (s): 15.2097
CPU system time (s): 0.001999
CPU usage (%): 99.937
Max. virtual memory (cumulated for all children) (KiB): 1804

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 15.2097
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= 306
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= 2
involuntary context switches= 293

runsolver used 0.019996 second user time and 0.053991 second system time

The end

Launcher Data 

Begin job on node60 at 2009-03-29 04:27:43
IDJOB=1517989
IDBENCH=70642
IDSOLVER=521
FILE ID=node60/1517989-1238293663
PBS_JOBID= 9060999
Free space on /tmp= 66404 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S23373420-028.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1517989-1238293663/watcher-1517989-1238293663 -o /tmp/evaluation-result-1517989-1238293663/solver-1517989-1238293663 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1517989-1238293663.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= c80ac2513e7d4a317f260e6d71a9bb08
RANDOM SEED=161513137

node60.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		: 3000.202
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		: 3000.202
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:       1301784 kB
Buffers:         83404 kB
Cached:         582132 kB
SwapCached:      10996 kB
Active:         212044 kB
Inactive:       466532 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1301784 kB
SwapTotal:     4192956 kB
SwapFree:      4175244 kB
Dirty:             792 kB
Writeback:           0 kB
Mapped:          18376 kB
Slab:            61168 kB
Committed_AS:  3206644 kB
PageTables:       1712 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= 66404 MiB
End job on node60 at 2009-03-29 04:27:58