Trace number 2080856

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 4.5823 4.6297

DiagnosticValue
ASSIGNMENTS1385

General information on the benchmark

Namecsp/langford3/
normalized-langford-3-17.xml
MD5SUMefdff8831deb934c09d0d62684ee6d4a
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 benchmark0.975851
Satisfiable
(Un)Satisfiability was proved
Number of variables51
Number of constraints1309
Maximum constraint arity2
Maximum domain size51
Number of constraints which are defined in extension0
Number of constraints which are defined in intension1309
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
0.18/0.20	c Seed is 1303860007
0.18/0.20	c Constructing HOME/instance-2080856-1247718915.xml 
0.18/0.20	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,V0)
0.18/0.20	c  with 1310 constraints
0.18/0.20	c Solving 1385 backtracks 9 restarts
4.53/4.62	s SATISFIABLE
4.53/4.62	c V0=20, V1=5, V2=2, V3=34, V4=36, V5=0, V6=17, V7=3, V8=30, V9=27, V10=23, V11=15, V12=4, V13=16, V14=13, V15=9, V16=1, V17=22, V18=8, V19=6, V20=39, V21=42, V22=7, V23=25, V24=12, V25=40, V26=38, V27=35, V28=28, V29=18, V30=31, V31=29, V32=26, V33=19, V34=24, V35=11, V36=10, V37=44, V38=48, V39=14, V40=33, V41=21, V42=50, V43=49, V44=47, V45=41, V46=32, V47=46, V48=45, V49=43, V50=37, 
4.53/4.62	v 20 5 2 34 36 0 17 3 30 27 23 15 4 16 13 9 1 22 8 6 39 42 7 25 12 40 38 35 28 18 31 29 26 19 24 11 10 44 48 14 33 21 50 49 47 41 32 46 45 43 37 
4.53/4.62	d ASSIGNMENTS 1385

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-2080856-1247718915/watcher-2080856-1247718915 -o /tmp/evaluation-result-2080856-1247718915/solver-2080856-1247718915 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1303860007 HOME/instance-2080856-1247718915.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 2.01 2.00 4/82 10090
/proc/meminfo: memFree=1544408/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=5356 CPUtime=0
/proc/10090/stat : 10090 (pcssolve) R 10088 10090 9309 0 -1 4194304 265 0 0 0 0 0 0 0 20 0 1 0 58956310 5484544 233 996147200 4194304 4889804 548682068800 18446744073709551615 234211465365 0 0 4100 65536 0 0 0 17 1 0 0
/proc/10090/statm: 1339 233 194 169 0 50 0

[startup+0.072976 s]
/proc/loadavg: 2.01 2.01 2.00 4/82 10090
/proc/meminfo: memFree=1544408/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=4944 CPUtime=0.05
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 925 656 0 0 5 0 0 0 18 0 1 0 58956310 5062656 556 996147200 134512640 135215973 4294956304 18446744073709551615 134932084 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 1236 556 406 171 0 161 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 4944

[startup+0.102977 s]
/proc/loadavg: 2.01 2.01 2.00 4/82 10090
/proc/meminfo: memFree=1544408/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=5296 CPUtime=0.08
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 1000 656 0 0 8 0 0 0 18 0 1 0 58956310 5423104 631 996147200 134512640 135215973 4294956304 18446744073709551615 134924472 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 1324 631 408 171 0 249 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5296

[startup+0.303005 s]
/proc/loadavg: 2.01 2.01 2.00 4/82 10090
/proc/meminfo: memFree=1544408/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=5556 CPUtime=0.28
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 1068 656 0 0 28 0 0 0 19 0 1 0 58956310 5689344 699 996147200 134512640 135215973 4294956304 18446744073709551615 134590112 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 1389 699 408 171 0 314 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5556

[startup+0.702054 s]
/proc/loadavg: 2.01 2.01 2.00 4/82 10090
/proc/meminfo: memFree=1544408/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=6360 CPUtime=0.68
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 1286 656 0 0 68 0 0 0 23 0 1 0 58956310 6512640 917 996147200 134512640 135215973 4294956304 18446744073709551615 134524036 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 1590 917 408 171 0 515 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6360

[startup+1.50116 s]
/proc/loadavg: 2.01 2.01 2.00 3/83 10095
/proc/meminfo: memFree=1541584/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=7936 CPUtime=1.46
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 1680 656 0 0 146 0 0 0 25 0 1 0 58956310 8126464 1311 996147200 134512640 135215973 4294956304 18446744073709551615 134599870 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 1984 1311 408 171 0 909 0
Current children cumulated CPU time (s) 1.46
Current children cumulated vsize (KiB) 7936

[startup+3.10136 s]
/proc/loadavg: 2.01 2.01 2.00 3/83 10095
/proc/meminfo: memFree=1538960/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=11860 CPUtime=3.05
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 2668 656 0 0 304 1 0 0 25 0 1 0 58956310 12144640 2266 996147200 134512640 135215973 4294956304 18446744073709551615 134585720 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 2965 2266 408 171 0 1890 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 11860

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

[startup+3.90146 s]
/proc/loadavg: 2.01 2.01 2.00 3/83 10095
/proc/meminfo: memFree=1536464/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=13828 CPUtime=3.84
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 3175 656 0 0 383 1 0 0 25 0 1 0 58956310 14159872 2708 996147200 134512640 135215973 4294956304 18446744073709551615 4158960912 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 3457 2708 408 171 0 2382 0
Current children cumulated CPU time (s) 3.84
Current children cumulated vsize (KiB) 13828

[startup+4.30151 s]
/proc/loadavg: 2.01 2.01 2.00 3/83 10095
/proc/meminfo: memFree=1534224/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=14480 CPUtime=4.24
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 3348 656 0 0 423 1 0 0 25 0 1 0 58956310 14827520 2881 996147200 134512640 135215973 4294956304 18446744073709551615 4158960185 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 3620 2881 408 171 0 2545 0
Current children cumulated CPU time (s) 4.24
Current children cumulated vsize (KiB) 14480

[startup+4.50154 s]
/proc/loadavg: 2.01 2.01 2.00 3/83 10095
/proc/meminfo: memFree=1534224/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=14872 CPUtime=4.43
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 3443 656 0 0 442 1 0 0 25 0 1 0 58956310 15228928 2976 996147200 134512640 135215973 4294956304 18446744073709551615 4158960018 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 3718 2976 408 171 0 2643 0
Current children cumulated CPU time (s) 4.43
Current children cumulated vsize (KiB) 14872

[startup+4.60155 s]
/proc/loadavg: 2.01 2.01 2.00 3/83 10095
/proc/meminfo: memFree=1534224/2055920 swapFree=4192812/4192956
[pid=10090] ppid=10088 vsize=15004 CPUtime=4.53
/proc/10090/stat : 10090 (pcs.big) R 10088 10090 9309 0 -1 4194304 3482 656 0 0 452 1 0 0 25 0 1 0 58956310 15364096 3015 996147200 134512640 135215973 4294956304 18446744073709551615 134590055 0 0 4096 0 0 0 0 17 1 0 0
/proc/10090/statm: 3751 3015 408 171 0 2676 0
Current children cumulated CPU time (s) 4.53
Current children cumulated vsize (KiB) 15004

Child status: 0
Real time (s): 4.6297
CPU time (s): 4.5823
CPU user time (s): 4.55531
CPU system time (s): 0.026995
CPU usage (%): 98.9762
Max. virtual memory (cumulated for all children) (KiB): 15004

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.55531
system time used= 0.026995
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4145
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= 203

runsolver used 0.006998 second user time and 0.023996 second system time

The end

Launcher Data 

Begin job on node54 at 2009-07-16 06:35:15
IDJOB=2080856
IDBENCH=57185
IDSOLVER=734
FILE ID=node54/2080856-1247718915
PBS_JOBID= 9521379
Free space on /tmp= 66296 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/langford3/normalized-langford-3-17.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2080856-1247718915/watcher-2080856-1247718915 -o /tmp/evaluation-result-2080856-1247718915/solver-2080856-1247718915 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1303860007 HOME/instance-2080856-1247718915.xml

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

MD5SUM BENCH= efdff8831deb934c09d0d62684ee6d4a
RANDOM SEED=1303860007

node54.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		: 3000.232
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		: 3000.232
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:       1544888 kB
Buffers:         71792 kB
Cached:         300916 kB
SwapCached:          0 kB
Active:         132764 kB
Inactive:       289464 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1544888 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1880 kB
Writeback:           0 kB
Mapped:          69852 kB
Slab:            73924 kB
Committed_AS:   575012 kB
PageTables:       1876 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 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 node54 at 2009-07-16 06:35:20