Trace number 1517918

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_nn nnUNSAT 25.1842 25.2067

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S367138237-029.cnf
MD5SUMfe0a666da3389b49d8bffa123f8cecff
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark22.2306
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, 17 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 357 free variables and 1513 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.477
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 164 duplicate clauses
0.00/0.01	c resolvent_look() :: found 75 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1588 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 1588 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1588 / 360 ) = 4.41
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 = 357
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 |**
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c |********************************
c |****************************************************************| ( 0/999) NodeCount: 23
0.00/0.02	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 1/999) NodeCount: 260
0.03/0.08	c |----------------------------------------------------------------|
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c |****************************************************************| ( 2/999) NodeCount: 1520
0.39/0.50	c |----------------------------------------------------------------|
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c |****************************************************************| ( 3/999) NodeCount: 5688
1.99/2.08	c |----------------------------------------------------------------|
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c |****************************************************************| ( 4/999) NodeCount: 14481
5.89/5.95	c |----------------------------------------------------------------|
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c |****************************************************************| ( 5/999) NodeCount: 26902
12.09/12.14	c |----------------------------------------------------------------|
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c |****************************************************************| ( 6/999) NodeCount: 38709
18.58/18.61	c |----------------------------------------------------------------|
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c |****************************************************************| ( 7/999) NodeCount: 46094
22.87/22.95	c |----------------------------------------------------------------|
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c |****************************************************************| ( 8/999) NodeCount: 49014
24.67/24.73	c |----------------------------------------------------------------|
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c |****************************************************************| ( 9/999) NodeCount: 49662
25.07/25.14	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| (10/999) NodeCount: 49727
25.07/25.20	c |----------------------------------------------------------------|
c |********
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c |****************************************************************| (11/999) NodeCount: 49731
25.07/25.20	c |----------------------------------------------------------------|
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c |****************************************************************| (12/999) NodeCount: 49732
25.07/25.20	c |----------------------------------------------------------------|
c |
25.17/25.20	c
25.17/25.20	c main():: nodeCount: 49732
25.17/25.20	c main():: dead ends in main: 1695
25.17/25.20	c main():: lookAheadCount: 3372238
25.17/25.20	c main():: unitResolveCount: 934391
25.17/25.20	c main():: time=25.170000
25.17/25.20	c main():: necessary_assignments: 13133
25.17/25.20	c main():: bin_sat: 0, bin_unsat 0
25.17/25.20	c main():: doublelook: #: 191779, succes #: 137858
25.17/25.20	c main():: doublelook: overall 5.886 of all possible doublelooks executed
25.17/25.20	c main():: doublelook: succesrate: 71.884, average DL_trigger: 44.573
25.17/25.20	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-1517918-1238292896/watcher-1517918-1238292896 -o /tmp/evaluation-result-1517918-1238292896/solver-1517918-1238292896 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1517918-1238292896.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: 1.00 1.00 1.00 2/70 26960
/proc/meminfo: memFree=787936/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=972 CPUtime=0
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 136 0 0 0 0 0 0 0 18 0 1 0 1101952838 995328 119 1992294400 134512640 135197250 4294956240 18446744073709551615 134528032 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 243 119 68 167 0 74 0

[startup+0.0411159 s]
/proc/loadavg: 1.00 1.00 1.00 2/70 26960
/proc/meminfo: memFree=787936/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=1504 CPUtime=0.03
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 233 0 0 0 3 0 0 0 18 0 1 0 1101952838 1540096 216 1992294400 134512640 135197250 4294956240 18446744073709551615 134718558 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 376 216 93 167 0 207 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 1504

[startup+0.101122 s]
/proc/loadavg: 1.00 1.00 1.00 2/70 26960
/proc/meminfo: memFree=787936/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=1504 CPUtime=0.09
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 246 0 0 0 9 0 0 0 18 0 1 0 1101952838 1540096 229 1992294400 134512640 135197250 4294956240 18446744073709551615 134618511 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 376 229 93 167 0 207 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1504

[startup+0.301141 s]
/proc/loadavg: 1.00 1.00 1.00 2/70 26960
/proc/meminfo: memFree=787936/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=1636 CPUtime=0.29
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 264 0 0 0 29 0 0 0 19 0 1 0 1101952838 1675264 247 1992294400 134512640 135197250 4294956240 18446744073709551615 134542266 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 409 247 93 167 0 240 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1636

[startup+0.70118 s]
/proc/loadavg: 1.00 1.00 1.00 2/70 26960
/proc/meminfo: memFree=787936/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=1636 CPUtime=0.69
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 287 0 0 0 69 0 0 0 23 0 1 0 1101952838 1675264 270 1992294400 134512640 135197250 4294956240 18446744073709551615 134539243 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 409 270 93 167 0 240 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1636

[startup+1.50126 s]
/proc/loadavg: 1.00 1.00 1.00 2/71 26961
/proc/meminfo: memFree=787160/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=1920 CPUtime=1.49
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 330 0 0 0 149 0 0 0 25 0 1 0 1101952838 1966080 313 1992294400 134512640 135197250 4294956240 18446744073709551615 134539309 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 480 313 93 167 0 311 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1920

[startup+3.10141 s]
/proc/loadavg: 1.00 1.00 1.00 2/71 26961
/proc/meminfo: memFree=786840/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=1988 CPUtime=3.09
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 361 0 0 0 309 0 0 0 25 0 1 0 1101952838 2035712 344 1992294400 134512640 135197250 4294956240 18446744073709551615 134525346 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 497 344 93 167 0 328 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1988

[startup+6.30172 s]
/proc/loadavg: 1.00 1.00 1.00 2/71 26961
/proc/meminfo: memFree=786584/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=2308 CPUtime=6.29
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 432 0 0 0 629 0 0 0 25 0 1 0 1101952838 2363392 406 1992294400 134512640 135197250 4294956240 18446744073709551615 134594091 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 577 406 93 167 0 408 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2308

[startup+12.7013 s]
/proc/loadavg: 1.00 1.00 1.00 2/71 26961
/proc/meminfo: memFree=786008/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=2692 CPUtime=12.68
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 533 0 0 0 1268 0 0 0 25 0 1 0 1101952838 2756608 507 1992294400 134512640 135197250 4294956240 18446744073709551615 134542058 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 673 507 93 167 0 504 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 2692

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

[startup+19.102 s]
/proc/loadavg: 1.08 1.02 1.01 2/71 26961
/proc/meminfo: memFree=785688/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=3032 CPUtime=19.08
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 628 0 0 0 1908 0 0 0 25 0 1 0 1101952838 3104768 602 1992294400 134512640 135197250 4294956240 18446744073709551615 134525416 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 758 602 93 167 0 589 0
Current children cumulated CPU time (s) 19.08
Current children cumulated vsize (KiB) 3032

[startup+22.3013 s]
/proc/loadavg: 1.07 1.02 1.00 2/71 26961
/proc/meminfo: memFree=785496/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=3856 CPUtime=22.27
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 673 0 0 0 2227 0 0 0 25 0 1 0 1101952838 3948544 647 1992294400 134512640 135197250 4294956240 18446744073709551615 134525237 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 964 647 93 167 0 795 0
Current children cumulated CPU time (s) 22.27
Current children cumulated vsize (KiB) 3856

[startup+23.9014 s]
/proc/loadavg: 1.07 1.02 1.00 2/71 26961
/proc/meminfo: memFree=785432/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=3856 CPUtime=23.87
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 695 0 0 0 2387 0 0 0 25 0 1 0 1101952838 3948544 669 1992294400 134512640 135197250 4294956240 18446744073709551615 134539243 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 964 669 93 167 0 795 0
Current children cumulated CPU time (s) 23.87
Current children cumulated vsize (KiB) 3856

[startup+24.7015 s]
/proc/loadavg: 1.07 1.02 1.00 2/71 26961
/proc/meminfo: memFree=785368/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=3856 CPUtime=24.67
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 705 0 0 0 2467 0 0 0 25 0 1 0 1101952838 3948544 679 1992294400 134512640 135197250 4294956240 18446744073709551615 134596890 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 964 679 93 167 0 795 0
Current children cumulated CPU time (s) 24.67
Current children cumulated vsize (KiB) 3856

[startup+25.1015 s]
/proc/loadavg: 1.07 1.02 1.00 2/71 26961
/proc/meminfo: memFree=785368/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=3856 CPUtime=25.07
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 710 0 0 0 2507 0 0 0 25 0 1 0 1101952838 3948544 684 1992294400 134512640 135197250 4294956240 18446744073709551615 134571091 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 964 684 93 167 0 795 0
Current children cumulated CPU time (s) 25.07
Current children cumulated vsize (KiB) 3856

[startup+25.2016 s]
/proc/loadavg: 1.07 1.02 1.00 2/71 26961
/proc/meminfo: memFree=785304/2055920 swapFree=4173156/4192956
[pid=26960] ppid=26958 vsize=3824 CPUtime=25.17
/proc/26960/stat : 26960 (march_nn) R 26958 26960 26165 0 -1 4194304 712 0 0 0 2517 0 0 0 25 0 1 0 1101952838 3915776 678 1992294400 134512640 135197250 4294956240 18446744073709551615 134917342 0 0 4096 0 0 0 0 17 1 0 0
/proc/26960/statm: 938 660 94 167 0 769 0
Current children cumulated CPU time (s) 25.17
Current children cumulated vsize (KiB) 3824

Child status: 20
Real time (s): 25.2067
CPU time (s): 25.1842
CPU user time (s): 25.1762
CPU system time (s): 0.007998
CPU usage (%): 99.9107
Max. virtual memory (cumulated for all children) (KiB): 3856

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 25.1762
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= 713
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= 452

runsolver used 0.039993 second user time and 0.080987 second system time

The end

Launcher Data 

Begin job on node36 at 2009-03-29 04:14:56
IDJOB=1517918
IDBENCH=70636
IDSOLVER=522
FILE ID=node36/1517918-1238292896
PBS_JOBID= 9060920
Free space on /tmp= 66412 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S367138237-029.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1517918-1238292896/watcher-1517918-1238292896 -o /tmp/evaluation-result-1517918-1238292896/solver-1517918-1238292896 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1517918-1238292896.cnf

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

MD5SUM BENCH= fe0a666da3389b49d8bffa123f8cecff
RANDOM SEED=1184456801

node36.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		: 3000.214
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		: 3000.214
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:        788352 kB
Buffers:        104892 kB
Cached:        1060796 kB
SwapCached:       9216 kB
Active:         236188 kB
Inactive:       940168 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        788352 kB
SwapTotal:     4192956 kB
SwapFree:      4173156 kB
Dirty:             800 kB
Writeback:           0 kB
Mapped:          16252 kB
Slab:            76496 kB
Committed_AS:  2915520 kB
PageTables:       1876 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= 66412 MiB
End job on node36 at 2009-03-29 04:15:21