Trace number 200481

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
Abscon 109 ESACUNSAT 1.19982 1.22346

DiagnosticValue
CHECKS5566862
NODES0

General information on the benchmark

NamequeensKnights/
queensKnights-20-5-add.xml
MD5SUM253a2f8b56ae1170f4a8024dd86a3120
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.896863
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables25
Number of constraints200
Maximum constraint arity2
Maximum domain size400
Number of constraints which are defined in extension0
Number of constraints which are defined in intension200
Global constraints used (with number of constraints)

Solver Data (download as text)

0.29	   
0.29	Abscon 109 (November, 2006)
0.29	   
0.29	   configuration
0.29	     name=esac.xml
0.32	   
0.32	   instance
0.32	     name=/tmp/evaluation/200481-1168142736/unknown.xml
0.35	   
0.35	   domains being loaded...
0.35	   
0.35	   variables being loaded...
0.39	     nbVariables=25  nbDomainTypes=2  minDomainSize=20  maxDomainSize=400
0.39	       =>  wckTime=0.096  cpuTime=0.09  mem=6M951
0.39	   
0.39	   predicates being loaded...
0.39	   
0.39	   constraints being loaded...
0.76	     nbConstraints=200  nbConvertedConstraints=200  nbConvertConstraintsChecks=327600  nbExtensionStructures=21
0.76	     nbSharedExtensionStructures=179  nbConflictsStructures=21  nbSharedConflictsStructures=179
0.76	     nbSharedBinaryRepresentations=1319  maxDegree=19  maxArity=2
0.76	       =>  wckTime=0.471  cpuTime=0.41  mem=9M888
0.80	   
0.80	   solver IterativeSystematicSolver being built... 
0.95	       =>  wckTime=0.659  cpuTime=0.54  mem=13M597
1.19	   
1.19	   preprocessing
1.19	     nbConstraintChecks=5566862  nbPropagations=3867  nbRevisions=6398  nbUselessRevisions=1778  nbSingletonTests=443
1.19	     nbEffectiveSingletonTests=399  nbESACBranches=4  nbRemovedValues=1986  detectedInconsistency=yes
1.19	       =>  wckTime=0.233  cpuTime=0.22  mem=13M597
1.19	   
1.19	   global
1.19	     nbConstraintChecks=5566862  nbPropagations=3867  nbRevisions=6398  nbUselessRevisions=1778  nbRestartNogoods=0
1.19	     solvingWckTime=0.234  solvingCpuTime=0.22  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
1.19	     globalCpuTime=0.8
1.19	       =>  wckTime=0.896  cpuTime=0.76  mem=13M597
1.19	   
1.19	s UNSATISFIABLE
1.19	d NODES 0
1.19	d CHECKS 5566862
1.19	   
1.19	   totalWckTime=0.971  totalCpuTime=0.8

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node55/watcher-200481-1168142736 -o ROOT/results/node55/solver-200481-1168142736 -C 1800 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/200481-1168142736/unknown.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 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: 1.24 1.45 1.77 3/68 643
/proc/meminfo: memFree=1573576/2055920 swapFree=4192812/4192956
[pid=642] ppid=640 vsize=1500 CPUtime=0
/proc/642/stat : 642 (java) R 640 642 32760 0 -1 0 263 0 0 0 0 0 0 0 18 0 1 0 162671961 1536000 68 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 6818785 0 0 4096 0 0 0 0 17 1 0 0
/proc/642/statm: 375 69 55 14 0 8 0

[startup+0.102788 s]
/proc/loadavg: 1.24 1.45 1.77 3/68 643
/proc/meminfo: memFree=1573576/2055920 swapFree=4192812/4192956
[pid=642] ppid=640 vsize=914988 CPUtime=0.09
/proc/642/stat : 642 (java) R 640 642 32760 0 -1 0 3065 0 1 0 7 2 0 0 16 0 8 0 162671961 936947712 2811 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/642/statm: 228747 2811 1451 14 0 215242 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 914988

[startup+0.510825 s]
/proc/loadavg: 1.24 1.45 1.77 3/68 643
/proc/meminfo: memFree=1573576/2055920 swapFree=4192812/4192956
[pid=642] ppid=640 vsize=915464 CPUtime=0.5
/proc/642/stat : 642 (java) R 640 642 32760 0 -1 0 6697 0 1 0 45 5 0 0 16 0 8 0 162671961 937435136 6436 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/642/statm: 228866 6437 2166 14 0 215336 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 915464

Child status: 0
Real time (s): 1.22346
CPU time (s): 1.19982
CPU user time (s): 1.09183
CPU system time (s): 0.107983
CPU usage (%): 98.0677
Max. virtual memory (cumulated for all children) (KiB): 915464

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.09183
system time used= 0.107983
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8476
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= 645
involuntary context switches= 80

runsolver used 0.004999 s user time and 0.008998 s system time

The end

Launcher Data (download as text)

Begin job on node55 on Sun Jan  7 04:05:37 UTC 2007


IDJOB= 200481
IDBENCH= 3710
FILE ID= node55/200481-1168142736

PBS_JOBID= 3478101

Free space on /tmp= 66557 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-20-5-add.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/200481-1168142736/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node55/watcher-200481-1168142736 -o ROOT/results/node55/solver-200481-1168142736 -C 1800 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/200481-1168142736/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  253a2f8b56ae1170f4a8024dd86a3120

RANDOM SEED= 704976220

TIME LIMIT= 1800 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		: 3000.218
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		: 3000.218
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:       1573928 kB
Buffers:         17468 kB
Cached:         388560 kB
SwapCached:          0 kB
Active:         174476 kB
Inactive:       251672 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1573928 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2228 kB
Writeback:           0 kB
Mapped:          30296 kB
Slab:            41616 kB
Committed_AS:  3261028 kB
PageTables:       1572 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= 66557 MiB



End job on node55 on Sun Jan  7 04:05:39 UTC 2007