Trace number 2097624

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
Abscon 112v4 ESACSAT 0.824873 0.833915

DiagnosticValue
CHECKS8832
NODES63

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-8.xml
MD5SUM597114782507517e5af808ba8c1eefba
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.009997
Satisfiable
(Un)Satisfiability was proved
Number of variables16
Number of constraints128
Maximum constraint arity2
Maximum domain size16
Number of constraints which are defined in extension0
Number of constraints which are defined in intension128
Global constraints used (with number of constraints)

Solver Data 

0.03/0.08	
0.03/0.08	Abscon 112 (May, 2008)
0.19/0.24	
0.19/0.24	   configuration
0.19/0.24	     name=esac.xml
0.19/0.27	   
0.19/0.27	   instance
0.19/0.27	     name=HOME/instance-2097624-1247413729.xml
0.29/0.31	   
0.29/0.31	   domains being loaded...
0.29/0.32	   
0.29/0.32	   variables being loaded...
0.29/0.34	     nbVariables=16  nbDomainTypes=1  minDomainSize=16  maxDomainSize=16  nbTotalValues=256
0.29/0.34	       =>  wckTime=0.1  cpuTime=0.1  mem=7M892
0.29/0.34	   
0.29/0.34	   predicates being loaded...
0.39/0.40	   
0.39/0.40	   constraints being loaded...
0.49/0.56	     nbConstraints=121  nbGlobalConstraints=1  nbMergedConstraints=8  nbConvertedConstraints=120
0.49/0.56	     nbConvertConstraintsChecks=2304  nbExtensionStructures=9  nbSharedExtensionStructures=111  nbConflictsStructures=9
0.49/0.56	     nbSharedConflictsStructures=111  nbSharedBinaryRepresentations=255  minDegree=16  maxDegree=16  minArity=2
0.49/0.56	     avgArity=2.12  maxArity=16  nbGenerators=0  nbFusions=0  symmetryWckTime=0.047  symmetryCpuTime=0.03  nbCliques=1
0.49/0.56	       =>  wckTime=0.317  cpuTime=0.26  mem=14M931
0.58/0.61	   
0.58/0.61	   solver IterativeSystematicSolver being built... 
0.58/0.68	   
0.58/0.68	   INFO : Forward propagation technique limited 
0.68/0.74	       =>  wckTime=0.503  cpuTime=0.37  mem=19M428
0.68/0.77	   
0.68/0.77	   preprocessing
0.68/0.77	     nbConstraintChecks=3820  nbPropagations=224  nbRevisions=548  nbUselessRevisions=351  nbSingletonTests=25
0.68/0.77	     nbEffectiveSingletonTests=0  nbACRemovals=88  nbFoundSingletons=0  nbRemovedValues=88  detectedInconsistency=no
0.68/0.77	       =>  wckTime=0.027  cpuTime=0.02  mem=20M419
0.78/0.81	   
0.78/0.81	   search
0.78/0.81	     run=1  nbConstraintChecks=5012  minDepth=6  maxDepth=16  nbPropagations=1120  nbRevisions=3163
0.78/0.81	     nbUselessRevisions=2145  nbAssignments=63  nbFailedAssignments=11  nbBacktracks=28  nbVisitedNodes=85
0.78/0.81	     nbRestartNogoods=4  nbFoundSolutions=1  mapSize=14  nbInferences=0  nbTooLargeKeys=0  nbSEliminables=0
0.78/0.82	     nbREliminables=0  nbIEliminables=12.2  nbDEliminables=0  nbPEliminables=0
0.78/0.82	       =>  wckTime=0.068  cpuTime=0.05  mem=21M411
0.78/0.82	   
0.78/0.82	   global
0.78/0.82	     nbConstraintChecks=8832  nbPropagations=1344  nbRevisions=3711  nbUselessRevisions=2496  nbRestartNogoods=4
0.78/0.82	     solvingWckTime=0.071  solvingCpuTime=0.05  expiredTime=no  totalExploration=no  nbFoundSolutions=1
0.78/0.82	     firstSolutionCpuTime=0.41  globalCpuTime=0.46
0.78/0.82	       =>  wckTime=0.576  cpuTime=0.42  mem=21M411
0.78/0.82	   
0.78/0.82	s SATISFIABLE
0.78/0.82	v 13 1 3 6 8 5 2 0 15 4 7 11 14 12 10 9 
0.78/0.82	d NODES 63
0.78/0.82	d CHECKS 8832
0.78/0.82	   
0.78/0.82	   totalWckTime=0.642  totalCpuTime=0.46

Verifier Data 

OK

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2097624-1247413729/watcher-2097624-1247413729 -o /tmp/evaluation-result-2097624-1247413729/solver-2097624-1247413729 -C 1800 -W 2000 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax HOME/instance-2097624-1247413729.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 28562
/proc/meminfo: memFree=1779440/2055920 swapFree=4192812/4192956
[pid=28562] ppid=28560 vsize=272 CPUtime=0
/proc/28562/stat : 28562 (java) R 28560 28562 26990 0 -1 0 217 0 0 0 0 0 0 0 18 0 1 0 28439014 278528 37 996147200 134512640 134550932 4294955968 18446744073709551615 1172260 0 2147483391 4096 0 0 0 0 17 0 0 0
/proc/28562/statm: 68 37 28 9 0 6 0

[startup+0.0444349 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 28562
/proc/meminfo: memFree=1779440/2055920 swapFree=4192812/4192956
[pid=28562] ppid=28560 vsize=863616 CPUtime=0.03
/proc/28562/stat : 28562 (java) S 28560 28562 26990 0 -1 0 2425 0 1 0 2 1 0 0 18 0 9 0 28439014 884342784 1998 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/28562/statm: 215904 1998 911 9 0 210819 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 863616

[startup+0.102457 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 28562
/proc/meminfo: memFree=1779440/2055920 swapFree=4192812/4192956
[pid=28562] ppid=28560 vsize=865980 CPUtime=0.09
/proc/28562/stat : 28562 (java) S 28560 28562 26990 0 -1 0 3836 0 1 0 8 1 0 0 18 0 9 0 28439014 886763520 3279 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/28562/statm: 216495 3279 1730 9 0 210980 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 865980

[startup+0.302467 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 28562
/proc/meminfo: memFree=1779440/2055920 swapFree=4192812/4192956
[pid=28562] ppid=28560 vsize=866500 CPUtime=0.29
/proc/28562/stat : 28562 (java) S 28560 28562 26990 0 -1 0 6110 0 1 0 26 3 0 0 18 0 9 0 28439014 887296000 5476 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/28562/statm: 216625 5476 1987 9 0 211083 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 866500

[startup+0.701495 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 28562
/proc/meminfo: memFree=1779440/2055920 swapFree=4192812/4192956
[pid=28562] ppid=28560 vsize=867044 CPUtime=0.68
/proc/28562/stat : 28562 (java) S 28560 28562 26990 0 -1 0 13179 273 1 0 62 6 0 0 18 0 9 0 28439014 887853056 8370 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/28562/statm: 216761 8370 2651 9 0 211197 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 867044

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

[startup+0.801503 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 28562
/proc/meminfo: memFree=1779440/2055920 swapFree=4192812/4192956
[pid=28562] ppid=28560 vsize=867044 CPUtime=0.78
/proc/28562/stat : 28562 (java) S 28560 28562 26990 0 -1 0 15517 273 1 0 71 7 0 0 18 0 9 0 28439014 887853056 10309 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/28562/statm: 216761 10309 2655 9 0 211197 0
Current children cumulated CPU time (s) 0.78
Current children cumulated vsize (KiB) 867044

Child status: 0
Real time (s): 0.833915
CPU time (s): 0.824873
CPU user time (s): 0.737887
CPU system time (s): 0.086986
CPU usage (%): 98.9157
Max. virtual memory (cumulated for all children) (KiB): 867044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.737887
system time used= 0.086986
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 15919
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 819
involuntary context switches= 878

runsolver used 0.005999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node31 at 2009-07-12 17:48:49
IDJOB=2097624
IDBENCH=57575
IDSOLVER=774
FILE ID=node31/2097624-1247413729
PBS_JOBID= 9510582
Free space on /tmp= 66400 MiB

SOLVER NAME= Abscon 112v4 ESAC
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-8.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2097624-1247413729/watcher-2097624-1247413729 -o /tmp/evaluation-result-2097624-1247413729/solver-2097624-1247413729 -C 1800 -W 2000 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax HOME/instance-2097624-1247413729.xml

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 597114782507517e5af808ba8c1eefba
RANDOM SEED=523649907

node31.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		: 3000.216
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	: 5931.00
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		: 3000.216
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:       1779920 kB
Buffers:         38768 kB
Cached:         132252 kB
SwapCached:          0 kB
Active:         138248 kB
Inactive:        84612 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1779920 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2024 kB
Writeback:           0 kB
Mapped:          72324 kB
Slab:            38124 kB
Committed_AS:   991476 kB
PageTables:       1976 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= 66400 MiB
End job on node31 at 2009-07-12 17:48:50