Trace number 2082242

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 0.532918 0.540495

DiagnosticValue
ASSIGNMENTS82

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-40.xml
MD5SUMa208359cddbd3b9552cce431975a353a
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 benchmark0.12498
Satisfiable
(Un)Satisfiability was proved
Number of variables80
Number of constraints3200
Maximum constraint arity2
Maximum domain size80
Number of constraints which are defined in extension0
Number of constraints which are defined in intension3200
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c has big domains
0.00/0.01	c big-domain mode
0.00/0.02	c Seed is 1411706384
0.00/0.02	c Constructing HOME/instance-2082242-1247720825.xml 
0.08/0.12	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,V30,V31,V32,V33,V34,V35,V36,V37,V38,V39,V40,V41,V42,V43,V44,V45,V46,V47,V48,V49,V50,V51,V52,V53,V54,V55,V56,V57,V58,V59,V60,V61,V62,V63,V64,V65,V66,V67,V68,V69,V70,V71,V72,V73,V74,V75,V76,V77,V78,V79,V0)
0.08/0.12	c  with 3201 constraints
0.08/0.12	c Solving 82 backtracks 3 restarts
0.48/0.53	s SATISFIABLE
0.48/0.53	c V0=0, V1=55, V2=74, V3=27, V4=5, V5=62, V6=68, V7=38, V8=4, V9=17, V10=52, V11=7, V12=63, V13=8, V14=13, V15=16, V16=12, V17=53, V18=31, V19=44, V20=57, V21=25, V22=19, V23=10, V24=40, V25=46, V26=39, V27=41, V28=45, V29=6, V30=18, V31=3, V32=22, V33=26, V34=24, V35=34, V36=21, V37=15, V38=9, V39=1, V40=2, V41=58, V42=78, V43=32, V44=11, V45=69, V46=76, V47=47, V48=14, V49=28, V50=64, V51=20, V52=77, V53=23, V54=29, V55=33, V56=30, V57=72, V58=51, V59=65, V60=79, V61=48, V62=43, V63=35, V64=66, V65=73, V66=67, V67=70, V68=75, V69=37, V70=50, V71=36, V72=56, V73=61, V74=60, V75=71, V76=59, V77=54, V78=49, V79=42, 
0.48/0.53	v 0 55 74 27 5 62 68 38 4 17 52 7 63 8 13 16 12 53 31 44 57 25 19 10 40 46 39 41 45 6 18 3 22 26 24 34 21 15 9 1 2 58 78 32 11 69 76 47 14 28 64 20 77 23 29 33 30 72 51 65 79 48 43 35 66 73 67 70 75 37 50 36 56 61 60 71 59 54 49 42 
0.48/0.53	d ASSIGNMENTS 82

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-2082242-1247720825/watcher-2082242-1247720825 -o /tmp/evaluation-result-2082242-1247720825/solver-2082242-1247720825 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1411706384 HOME/instance-2082242-1247720825.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: 1.92 1.98 1.99 4/72 12447
/proc/meminfo: memFree=1404968/2055920 swapFree=4192812/4192956
[pid=12447] ppid=12445 vsize=5356 CPUtime=0
/proc/12447/stat : 12447 (pcssolve) R 12445 12447 8839 0 -1 4194304 290 0 0 0 0 0 0 0 21 0 1 0 59149002 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 272467815071 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/12447/statm: 1339 241 200 169 0 50 0
[pid=12448] ppid=12447 vsize=3676 CPUtime=0
/proc/12448/stat : 12448 (fgrep) R 12447 12447 8839 0 -1 4194304 138 0 0 0 0 0 0 0 22 0 1 0 59149003 3764224 105 996147200 4194304 4274172 548682068976 18446744073709551615 272467984466 0 0 4096 0 0 0 0 17 1 0 0
/proc/12448/statm: 919 105 85 19 0 43 0
[pid=12449] ppid=12447 vsize=5356 CPUtime=0
/proc/12449/stat : 12449 (pcssolve) R 12447 12447 8839 0 -1 4194368 0 0 0 0 0 0 0 0 21 0 1 0 59149003 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 272467815071 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/12449/statm: 1339 241 200 169 0 50 0

[startup+0.029646 s]
/proc/loadavg: 1.92 1.98 1.99 4/72 12447
/proc/meminfo: memFree=1404968/2055920 swapFree=4192812/4192956
[pid=12447] ppid=12445 vsize=4492 CPUtime=0.01
/proc/12447/stat : 12447 (pcs.big) R 12445 12447 8839 0 -1 4194304 817 656 0 0 1 0 0 0 23 0 1 0 59149002 4599808 448 996147200 134512640 135215973 4294956304 18446744073709551615 134773465 0 0 4096 0 0 0 0 17 1 0 0
/proc/12447/statm: 1123 448 384 171 0 48 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 4492

[startup+0.101656 s]
/proc/loadavg: 1.92 1.98 1.99 4/72 12447
/proc/meminfo: memFree=1404968/2055920 swapFree=4192812/4192956
[pid=12447] ppid=12445 vsize=5076 CPUtime=0.08
/proc/12447/stat : 12447 (pcs.big) R 12445 12447 8839 0 -1 4194304 927 656 0 0 8 0 0 0 23 0 1 0 59149002 5197824 558 996147200 134512640 135215973 4294956304 18446744073709551615 5119617 0 0 4096 0 0 0 0 17 1 0 0
/proc/12447/statm: 1269 558 384 171 0 194 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5076

[startup+0.301687 s]
/proc/loadavg: 1.92 1.98 1.99 4/72 12447
/proc/meminfo: memFree=1404968/2055920 swapFree=4192812/4192956
[pid=12447] ppid=12445 vsize=5932 CPUtime=0.28
/proc/12447/stat : 12447 (pcs.big) R 12445 12447 8839 0 -1 4194304 1183 656 0 0 28 0 0 0 25 0 1 0 59149002 6074368 814 996147200 134512640 135215973 4294956304 18446744073709551615 5144158 0 0 4096 0 0 0 0 17 1 0 0
/proc/12447/statm: 1483 814 408 171 0 408 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5932

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

[startup+0.501718 s]
/proc/loadavg: 1.92 1.98 1.99 4/72 12447
/proc/meminfo: memFree=1404968/2055920 swapFree=4192812/4192956
[pid=12447] ppid=12445 vsize=6192 CPUtime=0.48
/proc/12447/stat : 12447 (pcs.big) R 12445 12447 8839 0 -1 4194304 1234 656 0 0 48 0 0 0 25 0 1 0 59149002 6340608 865 996147200 134512640 135215973 4294956304 18446744073709551615 134583640 0 0 4096 0 0 0 0 17 1 0 0
/proc/12447/statm: 1548 865 408 171 0 473 0
Current children cumulated CPU time (s) 0.48
Current children cumulated vsize (KiB) 6192

Child status: 0
Real time (s): 0.540495
CPU time (s): 0.532918
CPU user time (s): 0.517921
CPU system time (s): 0.014997
CPU usage (%): 98.5982
Max. virtual memory (cumulated for all children) (KiB): 6192

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.517921
system time used= 0.014997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1978
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= 23

runsolver used 0.004999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node22 at 2009-07-16 07:07:05
IDJOB=2082242
IDBENCH=57559
IDSOLVER=734
FILE ID=node22/2082242-1247720825
PBS_JOBID= 9521360
Free space on /tmp= 66384 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-40.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082242-1247720825/watcher-2082242-1247720825 -o /tmp/evaluation-result-2082242-1247720825/solver-2082242-1247720825 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1411706384 HOME/instance-2082242-1247720825.xml

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

MD5SUM BENCH= a208359cddbd3b9552cce431975a353a
RANDOM SEED=1411706384

node22.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		: 3000.278
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		: 3000.278
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	: 5636.09
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1405448 kB
Buffers:         87264 kB
Cached:         343652 kB
SwapCached:          0 kB
Active:         179840 kB
Inactive:       384424 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1405448 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2112 kB
Writeback:           0 kB
Mapped:         144904 kB
Slab:            71376 kB
Committed_AS:   679112 kB
PageTables:       1924 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= 66384 MiB
End job on node22 at 2009-07-16 07:07:06