Trace number 2082363

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 0.3.2UNSAT 6.27105 6.30749

DiagnosticValue
ASSIGNMENTS7906

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-9.xml
MD5SUMa6e5333bd6daf1b78d27284171344f47
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 benchmark0.199968
Satisfiable
(Un)Satisfiability was proved
Number of variables18
Number of constraints162
Maximum constraint arity2
Maximum domain size18
Number of constraints which are defined in extension0
Number of constraints which are defined in intension162
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
0.00/0.01	c Seed is 192494191
0.00/0.02	c Constructing HOME/instance-2082363-1247720990.xml 
0.00/0.02	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V0)
0.00/0.02	c  with 163 constraints
0.00/0.02	c Solving 7906 backtracks 13 restarts
6.25/6.30	s UNSATISFIABLE
6.25/6.30	d ASSIGNMENTS 7906

Verifier Data

No possible verification on an UNSAT instance

Watcher Data

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2082363-1247720990/watcher-2082363-1247720990 -o /tmp/evaluation-result-2082363-1247720990/solver-2082363-1247720990 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 192494191 HOME/instance-2082363-1247720990.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: 2.01 2.05 2.00 4/83 14451
/proc/meminfo: memFree=837928/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=5356 CPUtime=0
/proc/14451/stat : 14451 (pcssolve) R 14449 14451 12947 0 -1 4194304 283 0 0 0 0 0 0 0 20 0 1 0 59164335 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 214944875403 0 65536 4100 65536 0 0 0 17 0 0 0
/proc/14451/statm: 1339 241 200 169 0 50 0
[pid=14452] ppid=14451 vsize=0 CPUtime=0
/proc/14452/stat : 14452 (fgrep) Z 14451 14451 12947 0 -1 4194316 151 0 0 0 0 0 0 0 20 0 1 0 59164336 0 0 996147200 0 0 0 0 0 0 0 4096 0 18446744071563351923 0 0 17 1 0 0
/proc/14452/statm: 0 0 0 0 0 0 0

[startup+0.040458 s]
/proc/loadavg: 2.01 2.05 2.00 4/83 14451
/proc/meminfo: memFree=837928/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=4492 CPUtime=0.02
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 863 814 0 0 2 0 0 0 23 0 1 0 59164335 4599808 472 996147200 134512640 135215973 4294956304 18446744073709551615 134935943 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 1123 472 408 171 0 48 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4492

[startup+0.102465 s]
/proc/loadavg: 2.01 2.05 2.00 4/83 14451
/proc/meminfo: memFree=837928/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=4752 CPUtime=0.08
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 908 814 0 0 8 0 0 0 23 0 1 0 59164335 4866048 517 996147200 134512640 135215973 4294956304 18446744073709551615 134609879 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 1188 517 408 171 0 113 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4752

[startup+0.301483 s]
/proc/loadavg: 2.01 2.05 2.00 4/83 14451
/proc/meminfo: memFree=837928/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=5320 CPUtime=0.28
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 1045 814 0 0 27 1 0 0 24 0 1 0 59164335 5447680 654 996147200 134512640 135215973 4294956304 18446744073709551615 4158960243 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 1330 654 408 171 0 255 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5320

[startup+0.701529 s]
/proc/loadavg: 2.01 2.05 2.00 4/83 14451
/proc/meminfo: memFree=837928/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=6376 CPUtime=0.68
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 1311 814 0 0 67 1 0 0 25 0 1 0 59164335 6529024 920 996147200 134512640 135215973 4294956304 18446744073709551615 134901847 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 1594 920 408 171 0 519 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6376

[startup+1.50162 s]
/proc/loadavg: 2.01 2.05 2.00 3/84 14457
/proc/meminfo: memFree=834848/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=8584 CPUtime=1.47
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 1870 814 0 0 146 1 0 0 25 0 1 0 59164335 8790016 1446 996147200 134512640 135215973 4294956304 18446744073709551615 134901777 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 2146 1446 408 171 0 1071 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 8584

[startup+3.1018 s]
/proc/loadavg: 2.01 2.05 2.00 3/84 14457
/proc/meminfo: memFree=831968/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=12876 CPUtime=3.06
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 3025 814 0 0 304 2 0 0 25 0 1 0 59164335 13185024 2503 996147200 134512640 135215973 4294956304 18446744073709551615 134741705 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 3219 2503 408 171 0 2144 0
Current children cumulated CPU time (s) 3.06
Current children cumulated vsize (KiB) 12876

[startup+6.30117 s]
/proc/loadavg: 2.01 2.05 2.00 3/84 14457
/proc/meminfo: memFree=823520/2055920 swapFree=4192812/4192956
[pid=14451] ppid=14449 vsize=20420 CPUtime=6.25
/proc/14451/stat : 14451 (pcs.big) R 14449 14451 12947 0 -1 4194304 5098 814 0 0 622 3 0 0 25 0 1 0 59164335 20910080 4383 996147200 134512640 135215973 4294956304 18446744073709551615 134626114 0 0 4096 0 0 0 0 17 0 0 0
/proc/14451/statm: 5105 4383 408 171 0 4030 0
Current children cumulated CPU time (s) 6.25
Current children cumulated vsize (KiB) 20420

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

Child status: 0
Real time (s): 6.30749
CPU time (s): 6.27105
CPU user time (s): 6.22705
CPU system time (s): 0.043993
CPU usage (%): 99.4222
Max. virtual memory (cumulated for all children) (KiB): 20548

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 6.22705
system time used= 0.043993
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5915
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= 19
involuntary context switches= 107

runsolver used 0.015997 second user time and 0.015997 second system time

The end

Launcher Data

Begin job on node85 at 2009-07-16 07:09:50
IDJOB=2082363
IDBENCH=57578
IDSOLVER=734
FILE ID=node85/2082363-1247720990
PBS_JOBID= 9521464
Free space on /tmp= 126536 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-9.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082363-1247720990/watcher-2082363-1247720990 -o /tmp/evaluation-result-2082363-1247720990/solver-2082363-1247720990 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 192494191 HOME/instance-2082363-1247720990.xml

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

MD5SUM BENCH= a6e5333bd6daf1b78d27284171344f47
RANDOM SEED=192494191

node85.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		: 3000.220
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		: 3000.220
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:        838408 kB
Buffers:         89184 kB
Cached:         456040 kB
SwapCached:          0 kB
Active:         801620 kB
Inactive:       341568 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        838408 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1740 kB
Writeback:           0 kB
Mapped:         618292 kB
Slab:            58460 kB
Committed_AS:  1231112 kB
PageTables:       2964 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= 126532 MiB
End job on node85 at 2009-07-16 07:09:57