Trace number 275231

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
AbsconMax 109 EPFCOPTIMUM 1.00985 1.07002

General information on the benchmark

NamequeensKnights/
queensKnights-12-5-add.xml
MD5SUM6d6bc0868391bae32ad7553af893fb56
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkMOPT
Best Number of satisfied constraints75
Best CPU time to get the best result obtained on this benchmark1.00985
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables17
Number of constraints76
Maximum constraint arity2
Maximum domain size144
Number of constraints which are defined in extension0
Number of constraints which are defined in intension76
Global constraints used (with number of constraints)

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data (download as text)

0.29	   
0.29	Abscon 109 (November, 2006)
0.29	   
0.29	   configuration
0.29	     name=epfc.xml
0.32	   
0.32	   instance
0.32	     name=/tmp/evaluation/275231-1169218843/unknown.xml
0.35	   
0.35	   domains being loaded...
0.35	   
0.35	   variables being loaded...
0.38	     nbVariables=17  nbDomainTypes=2  minDomainSize=12  maxDomainSize=144
0.38	       =>  wckTime=0.091  cpuTime=0.08  mem=6M887
0.38	   
0.38	   predicates being loaded...
0.39	   
0.39	   constraints being loaded...
0.52	     nbConstraints=76  nbConvertedConstraints=76  nbConvertConstraintsChecks=43056  nbExtensionStructures=13
0.52	     nbSharedExtensionStructures=63  nbConflictsStructures=13  nbSharedConflictsStructures=63
0.52	     nbSharedBinaryRepresentations=464  maxDegree=11  maxArity=2
0.52	       =>  wckTime=0.225  cpuTime=0.19  mem=8M837
0.55	   
0.55	   solver LocalSearchSolver being built... 
0.59	       =>  wckTime=0.301  cpuTime=0.23  mem=5M431
0.59	
0.59	s SATISFIABLE
0.59	o 64
0.60	c 12
0.60	o 66
0.60	c 10
0.60	o 67
0.60	c 9
0.60	o 68
0.60	c 8
0.60	o 69
0.60	c 7
0.61	o 70
0.61	c 6
0.61	o 71
0.61	c 5
0.61	o 72
0.61	c 4
0.61	o 73
0.61	c 3
0.61	o 74
0.61	c 2
0.62	o 75
0.62	c 1
0.62	   
0.62	   search
0.62	     run=0  nbConstraintChecks=63834  nbAssignments=63
0.62	       =>  wckTime=0.029  cpuTime=0.02  mem=5M431
0.62	   
0.62	   global
0.62	     nbConstraintChecks=63834  nbValidityChecks=0  nbPropagations=0  nbRevisions=0  nbUselessRevisions=0
0.62	     solvingWckTime=0.025  solvingCpuTime=0.02  expiredTime=no  totalExploration=no  nbFoundSolutions=0
0.62	     globalCpuTime=0.29
0.62	       =>  wckTime=0.329  cpuTime=0.25  mem=5M431
0.62	   
0.62	   solver IterativeSystematicSolver being built... 
0.75	       =>  wckTime=0.456  cpuTime=0.34  mem=15M332
1.01	   
1.01	   preprocessing
1.01	     nbConstraintChecks=822854  nbPropagations=0  nbRevisions=0  nbUselessRevisions=0  nbRemovedValues=292
1.01	     detectedInconsistency=yes
1.01	       =>  wckTime=0.261  cpuTime=0.23  mem=15M332
1.01	   
1.01	   global
1.01	     nbConstraintChecks=822854  nbRestartNogoods=0  solvingWckTime=0.264  solvingCpuTime=0.23  expiredTime=no
1.01	     totalExploration=yes  nbFoundSolutions=0  globalCpuTime=0.61
1.01	       =>  wckTime=0.721  cpuTime=0.57  mem=15M332
1.01	
1.01	s OPTIMUM FOUND
1.01	v 3 5 8 10 1 6 11 2 0 7 9 4 33 19 44 68 58 
1.01	   
1.01	   totalWckTime=0.796  totalCpuTime=0.62

Verifier Data (download as text)

1 unsatisfied constraints, 75 satisfied constraints

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node18/watcher-275231-1169218843 -o ROOT/results/node18/solver-275231-1169218843 -C 2400 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar epfc.xml 1 XSax /tmp/evaluation/275231-1169218843/unknown.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 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

/proc/loadavg: 1.94 1.99 1.96 4/94 493
/proc/meminfo: memFree=1330216/2055920 swapFree=4192812/4192956
[pid=492] ppid=490 vsize=172 CPUtime=0
/proc/492/stat : 492 (java) R 490 492 32320 0 -1 0 217 0 0 0 0 0 0 0 18 0 1 0 270279101 176128 24 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 7860523 0 0 4096 0 0 0 0 17 0 0 0
/proc/492/statm: 43 24 18 14 0 3 0

[startup+0.10853 s]
/proc/loadavg: 1.94 1.99 1.96 4/94 493
/proc/meminfo: memFree=1330216/2055920 swapFree=4192812/4192956
[pid=492] ppid=490 vsize=914988 CPUtime=0.09
/proc/492/stat : 492 (java) R 490 492 32320 0 -1 0 3085 0 1 0 8 1 0 0 24 0 8 0 270279101 936947712 2831 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/492/statm: 228747 2832 1457 14 0 215242 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 914988

[startup+0.520571 s]
/proc/loadavg: 1.94 1.99 1.96 4/94 493
/proc/meminfo: memFree=1330216/2055920 swapFree=4192812/4192956
[pid=492] ppid=490 vsize=915468 CPUtime=0.5
/proc/492/stat : 492 (java) R 490 492 32320 0 -1 0 6591 0 1 0 46 4 0 0 25 0 8 0 270279101 937439232 6330 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4152819938 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/492/statm: 228867 6330 2180 14 0 215337 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 915468

Child status: 0
Real time (s): 1.07002
CPU time (s): 1.00985
CPU user time (s): 0.945856
CPU system time (s): 0.06399
CPU usage (%): 94.3764
Max. virtual memory (cumulated for all children) (KiB): 915984

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.945856
system time used= 0.06399
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8888
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= 867
involuntary context switches= 933

runsolver used 0.002999 s user time and 0.008998 s system time

The end

Launcher Data (download as text)

Begin job on node18 on Fri Jan 19 15:00:44 UTC 2007


IDJOB= 275231
IDBENCH= 3713
IDSOLVER= 68
FILE ID= node18/275231-1169218843

PBS_JOBID= 3588904

Free space on /tmp= 66563 MiB

SOLVER NAME= AbsconMax 109 EPFC
BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-12-5-add.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar epfc.xml 1 XSax /tmp/evaluation/275231-1169218843/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node18/watcher-275231-1169218843 -o ROOT/results/node18/solver-275231-1169218843 -C 2400 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar epfc.xml 1 XSax /tmp/evaluation/275231-1169218843/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  6d6bc0868391bae32ad7553af893fb56

RANDOM SEED= 314372749

TIME LIMIT= 2400 seconds

MEMORY LIMIT= 900 MiB


/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		: 3000.231
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		: 3000.231
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:       1330696 kB
Buffers:         49556 kB
Cached:         521304 kB
SwapCached:          0 kB
Active:         221432 kB
Inactive:       424524 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1330696 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1748 kB
Writeback:           0 kB
Mapped:         102008 kB
Slab:            64116 kB
Committed_AS:  7915976 kB
PageTables:       2176 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= 66563 MiB



End job on node18 on Fri Jan 19 15:00:45 UTC 2007