Trace number 2087456

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
pcs-restart 0.3.2SAT 0.210967 0.218495

DiagnosticValue
ASSIGNMENTS1

General information on the benchmark

Namecsp/queens/
normalized-queens-30.xml
MD5SUM8ee67e9ea63e7269661dbf55146a7059
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 benchmark0.128979
Satisfiable
(Un)Satisfiability was proved
Number of variables30
Number of constraints435
Maximum constraint arity2
Maximum domain size30
Number of constraints which are defined in extension0
Number of constraints which are defined in intension435
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c has operations which may create big domains
0.00/0.01	c big-domain mode
0.00/0.02	c Seed is 1383313519
0.00/0.02	c Constructing HOME/instance-2087456-1247727680.xml 
0.00/0.05	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V18,V19,V20,V21,V22,V23,V24,V25,V26,V27,V28,V29,V0)
0.00/0.05	c  with 1741 constraints
0.00/0.05	c Solving 1 backtracks
0.18/0.21	s SATISFIABLE
0.18/0.21	c V0=19, V1=12, V2=15, V3=6, V4=30, V5=20, V6=4, V7=28, V8=14, V9=3, V10=1, V11=7, V12=26, V13=17, V14=22, V15=27, V16=8, V17=24, V18=2, V19=29, V20=25, V21=11, V22=5, V23=23, V24=9, V25=18, V26=21, V27=13, V28=16, V29=10, 
0.18/0.21	v 19 12 15 6 30 20 4 28 14 3 1 7 26 17 22 27 8 24 2 29 25 11 5 23 9 18 21 13 16 10 
0.18/0.21	d ASSIGNMENTS 1

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-2087456-1247727680/watcher-2087456-1247727680 -o /tmp/evaluation-result-2087456-1247727680/solver-2087456-1247727680 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1383313519 HOME/instance-2087456-1247727680.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: 2.09 2.10 2.03 4/81 9448
/proc/meminfo: memFree=1307080/2055920 swapFree=4192812/4192956
[pid=9448] ppid=9446 vsize=18576 CPUtime=0
/proc/9448/stat : 9448 (runsolver) R 9446 9448 8865 0 -1 4194368 15 0 0 0 0 0 0 0 22 0 1 0 59834579 19021824 284 996147200 4194304 4302564 548682068496 18446744073709551615 273952599335 0 0 4096 24578 0 0 0 17 1 0 0
/proc/9448/statm: 4644 284 249 26 0 2626 0

[startup+0.0933461 s]
/proc/loadavg: 2.09 2.10 2.03 4/81 9448
/proc/meminfo: memFree=1307080/2055920 swapFree=4192812/4192956
[pid=9448] ppid=9446 vsize=5852 CPUtime=0.07
/proc/9448/stat : 9448 (pcs.big) R 9446 9448 8865 0 -1 4194304 1223 827 0 0 7 0 0 0 25 0 1 0 59834579 5992448 779 996147200 134512640 135215973 4294956304 18446744073709551615 134610603 0 0 4096 0 0 0 0 17 1 0 0
/proc/9448/statm: 1463 779 407 171 0 388 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 5852

[startup+0.101342 s]
/proc/loadavg: 2.09 2.10 2.03 4/81 9448
/proc/meminfo: memFree=1307080/2055920 swapFree=4192812/4192956
[pid=9448] ppid=9446 vsize=5852 CPUtime=0.08
/proc/9448/stat : 9448 (pcs.big) R 9446 9448 8865 0 -1 4194304 1234 827 0 0 8 0 0 0 25 0 1 0 59834579 5992448 790 996147200 134512640 135215973 4294956304 18446744073709551615 134641038 0 0 4096 0 0 0 0 17 1 0 0
/proc/9448/statm: 1463 790 407 171 0 388 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5852

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

[startup+0.201357 s]
/proc/loadavg: 2.09 2.10 2.03 4/81 9448
/proc/meminfo: memFree=1307080/2055920 swapFree=4192812/4192956
[pid=9448] ppid=9446 vsize=7060 CPUtime=0.18
/proc/9448/stat : 9448 (pcs.big) R 9446 9448 8865 0 -1 4194304 1630 827 0 0 18 0 0 0 25 0 1 0 59834579 7229440 1081 996147200 134512640 135215973 4294956304 18446744073709551615 4158960000 0 0 4096 0 0 0 0 17 1 0 0
/proc/9448/statm: 1765 1081 407 171 0 690 0
Current children cumulated CPU time (s) 0.18
Current children cumulated vsize (KiB) 7060

Child status: 0
Real time (s): 0.218495
CPU time (s): 0.210967
CPU user time (s): 0.197969
CPU system time (s): 0.012998
CPU usage (%): 96.5546
Max. virtual memory (cumulated for all children) (KiB): 7060

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.197969
system time used= 0.012998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2497
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= 21
involuntary context switches= 23

runsolver used 0.004999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node20 at 2009-07-16 09:01:20
IDJOB=2087456
IDBENCH=58728
IDSOLVER=734
FILE ID=node20/2087456-1247727680
PBS_JOBID= 9521579
Free space on /tmp= 66296 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/queens/normalized-queens-30.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2087456-1247727680/watcher-2087456-1247727680 -o /tmp/evaluation-result-2087456-1247727680/solver-2087456-1247727680 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1383313519 HOME/instance-2087456-1247727680.xml

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

MD5SUM BENCH= 8ee67e9ea63e7269661dbf55146a7059
RANDOM SEED=1383313519

node20.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		: 3000.236
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		: 3000.236
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:       1307560 kB
Buffers:         90680 kB
Cached:         534376 kB
SwapCached:          0 kB
Active:         156292 kB
Inactive:       501944 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1307560 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2348 kB
Writeback:           0 kB
Mapped:          53580 kB
Slab:            75248 kB
Committed_AS:   492404 kB
PageTables:       1892 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= 66296 MiB
End job on node20 at 2009-07-16 09:01:20