Trace number 192134

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
CSPtoSAT+minisat 0.3SAT 0.228964 0.236527

General information on the benchmark

Namequeens/
queens-20.xml
MD5SUM3edea7185eba3deacaa79c92c3049b58
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 benchmark0.023996
SatisfiableYES
(Un)Satisfiability was provedYES
Number of variables20
Number of constraints190
Maximum constraint arity2
Maximum domain size20
Number of constraints which are defined in extension0
Number of constraints which are defined in intension190
Global constraints used (with number of constraints)

Solver Data (download as text)

0.20	c This is CSPtoSAT+minisat version 0.3
0.20	c (c) 2006 roussel@cril.univ-artois.fr
0.20	
0.20	c This solver internally uses a modified version of MiniSat2 version 061112
0.20	c MiniSat -- Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
0.20	
0.20	c parsing...
0.20	c ...done
0.20	c #SATvar=1162 #SATclauses=2260 #CSPpredicates=190
0.23	Verified 2260 original clauses.
0.23	c SAT problem is solved
0.23	restarts              : 6
0.23	conflicts             : 1816           (8108 /sec)
0.23	decisions             : 14519          (1.02 % random) (64827 /sec)
0.23	propagations          : 816234         (3644471 /sec)
0.23	conflict literals     : 4618           (0.00 % deleted)
0.23	Memory used           : 6.90 MB
0.23	CPU time              : 0.223965 s
0.23	c all predicates checked
0.23	
0.23	s SATISFIABLE
0.23	v 5 13 2 9 11 16 4 1 12 17 3 20 7 10 15 18 6 19 14 8 
0.23

Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node19/watcher-192134-1168048468 -o ROOT/results/node19/solver-192134-1168048468 -C 1800 -M 900 /tmp/evaluation/192134-1168048468/CSPtoSAT+minisat /tmp/evaluation/192134-1168048468/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: 1.91 1.94 1.46 5/86 17671
/proc/meminfo: memFree=1363496/2055920 swapFree=4171232/4192956
[pid=17670] ppid=17668 vsize=18540 CPUtime=0
/proc/17670/stat : 17670 (runsolver) R 17668 17670 17380 0 -1 4194368 16 0 0 0 0 0 0 0 20 0 1 0 153241450 18984960 279 18446744073709551615 4194304 4267372 548682068944 18446744073709551615 255236566311 0 0 4096 24578 0 0 0 17 1 0 0
/proc/17670/statm: 4635 279 244 17 0 2626 0

[startup+0.108048 s]
/proc/loadavg: 1.91 1.94 1.46 5/86 17671
/proc/meminfo: memFree=1363496/2055920 swapFree=4171232/4192956
[pid=17670] ppid=17668 vsize=7056 CPUtime=0.09
/proc/17670/stat : 17670 (CSPtoSAT+minisa) R 17668 17670 17380 0 -1 4194304 906 0 0 0 9 0 0 0 18 0 1 0 153241450 7225344 854 18446744073709551615 134512640 134728504 4294956592 18446744073709551615 134665620 0 0 4096 0 0 0 0 17 1 0 0
/proc/17670/statm: 1764 854 720 52 0 132 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 7056

Child status: 0
Real time (s): 0.236527
CPU time (s): 0.228964
CPU user time (s): 0.223965
CPU system time (s): 0.004999
CPU usage (%): 96.8024
Max. virtual memory (cumulated for all children) (KiB): 7056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.223965
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 934
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= 12
involuntary context switches= 27

runsolver used 0.003999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node19 on Sat Jan  6 01:54:28 UTC 2007


IDJOB= 192134
IDBENCH= 3092
FILE ID= node19/192134-1168048468

PBS_JOBID= 3475245

Free space on /tmp= 66267 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queens/queens-20.xml
COMMAND LINE= /tmp/evaluation/192134-1168048468/CSPtoSAT+minisat /tmp/evaluation/192134-1168048468/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node19/watcher-192134-1168048468 -o ROOT/results/node19/solver-192134-1168048468 -C 1800 -M 900  /tmp/evaluation/192134-1168048468/CSPtoSAT+minisat /tmp/evaluation/192134-1168048468/unknown.xml

META MD5SUM SOLVER= 0ab327eaa5be249b47b2f4b19927f0b0
MD5SUM BENCH=  3edea7185eba3deacaa79c92c3049b58

RANDOM SEED= 769516655

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		: 3000.260
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		: 3000.260
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:       1363976 kB
Buffers:         68804 kB
Cached:         483588 kB
SwapCached:      10036 kB
Active:         248348 kB
Inactive:       343732 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1363976 kB
SwapTotal:     4192956 kB
SwapFree:      4171232 kB
Dirty:            1644 kB
Writeback:           0 kB
Mapped:          52400 kB
Slab:            84684 kB
Committed_AS:  3538660 kB
PageTables:       2344 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= 66267 MiB



End job on node19 on Sat Jan  6 01:54:28 UTC 2007