Trace number 2080834

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 2.88156 2.91417

DiagnosticValue
ASSIGNMENTS794

General information on the benchmark

Namecsp/langford3/
normalized-langford-3-19.xml
MD5SUMaaae6bd1bcabe60d1f4e8682f4b12268
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 benchmark2.88156
Satisfiable
(Un)Satisfiability was proved
Number of variables57
Number of constraints1634
Maximum constraint arity2
Maximum domain size57
Number of constraints which are defined in extension0
Number of constraints which are defined in intension1634
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 806142990
0.00/0.02	c Constructing HOME/instance-2080834-1247718858.xml 
0.00/0.07	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,V0)
0.00/0.07	c  with 1635 constraints
0.00/0.07	c Solving 794 backtracks 8 restarts
2.86/2.91	s SATISFIABLE
2.86/2.91	c V0=52, V1=13, V2=3, V3=4, V4=41, V5=36, V6=24, V7=28, V8=25, V9=1, V10=27, V11=5, V12=6, V13=0, V14=17, V15=21, V16=8, V17=10, V18=2, V19=54, V20=16, V21=7, V22=9, V23=47, V24=43, V25=32, V26=37, V27=35, V28=12, V29=39, V30=18, V31=20, V32=15, V33=33, V34=38, V35=26, V36=29, V37=22, V38=56, V39=19, V40=11, V41=14, V42=53, V43=50, V44=40, V45=46, V46=45, V47=23, V48=51, V49=31, V50=34, V51=30, V52=49, V53=55, V54=44, V55=48, V56=42, 
2.86/2.91	v 52 13 3 4 41 36 24 28 25 1 27 5 6 0 17 21 8 10 2 54 16 7 9 47 43 32 37 35 12 39 18 20 15 33 38 26 29 22 56 19 11 14 53 50 40 46 45 23 51 31 34 30 49 55 44 48 42 
2.86/2.91	d ASSIGNMENTS 794

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-2080834-1247718858/watcher-2080834-1247718858 -o /tmp/evaluation-result-2080834-1247718858/solver-2080834-1247718858 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 806142990 HOME/instance-2080834-1247718858.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: 1.99 2.00 2.00 4/81 13513
/proc/meminfo: memFree=1119264/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=18576 CPUtime=0
/proc/13513/stat : 13513 (runsolver) R 13511 13513 12740 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 58949000 19021824 284 996147200 4194304 4302564 548682068496 18446744073709551615 218076081447 0 0 4096 24578 0 0 0 17 1 0 0
/proc/13513/statm: 4644 284 249 26 0 2626 0

[startup+0.014947 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13513
/proc/meminfo: memFree=1119264/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=5356 CPUtime=0
/proc/13513/stat : 13513 (pcssolve) S 13511 13513 12740 0 -1 4194304 339 474 0 0 0 0 0 0 23 0 1 0 58949000 5484544 242 996147200 4194304 4889804 548682068800 18446744073709551615 218076078916 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/13513/statm: 1339 242 201 169 0 50 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 5356

[startup+0.102964 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13513
/proc/meminfo: memFree=1119264/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=5308 CPUtime=0.08
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 1014 656 0 0 8 0 0 0 23 0 1 0 58949000 5435392 645 996147200 134512640 135215973 4294956304 18446744073709551615 4158853402 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 1327 645 408 171 0 252 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5308

[startup+0.301996 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13513
/proc/meminfo: memFree=1119264/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=5440 CPUtime=0.28
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 1062 656 0 0 28 0 0 0 25 0 1 0 58949000 5570560 693 996147200 134512640 135215973 4294956304 18446744073709551615 134609994 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 1360 693 408 171 0 285 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5440

[startup+0.702064 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13513
/proc/meminfo: memFree=1119264/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=6480 CPUtime=0.67
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 1302 656 0 0 67 0 0 0 25 0 1 0 58949000 6635520 933 996147200 134512640 135215973 4294956304 18446744073709551615 4158960146 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 1620 933 408 171 0 545 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 6480

[startup+1.5012 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13518
/proc/meminfo: memFree=1116440/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=8056 CPUtime=1.47
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 1716 656 0 0 147 0 0 0 25 0 1 0 58949000 8249344 1347 996147200 134512640 135215973 4294956304 18446744073709551615 134599865 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 2014 1347 408 171 0 939 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 8056

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

[startup+2.30133 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13518
/proc/meminfo: memFree=1113816/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=10144 CPUtime=2.26
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 2212 656 0 0 226 0 0 0 25 0 1 0 58949000 10387456 1810 996147200 134512640 135215973 4294956304 18446744073709551615 7835399 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 2536 1810 408 171 0 1461 0
Current children cumulated CPU time (s) 2.26
Current children cumulated vsize (KiB) 10144

[startup+2.7014 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13518
/proc/meminfo: memFree=1113816/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=11192 CPUtime=2.66
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 2480 656 0 0 265 1 0 0 25 0 1 0 58949000 11460608 2078 996147200 134512640 135215973 4294956304 18446744073709551615 134590078 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 2798 2078 408 171 0 1723 0
Current children cumulated CPU time (s) 2.66
Current children cumulated vsize (KiB) 11192

[startup+2.90144 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13518
/proc/meminfo: memFree=1113816/2055920 swapFree=4192812/4192956
[pid=13513] ppid=13511 vsize=11588 CPUtime=2.86
/proc/13513/stat : 13513 (pcs.big) R 13511 13513 12740 0 -1 4194304 2580 656 0 0 285 1 0 0 25 0 1 0 58949000 11866112 2178 996147200 134512640 135215973 4294956304 18446744073709551615 134526966 0 0 4096 0 0 0 0 17 1 0 0
/proc/13513/statm: 2897 2178 408 171 0 1822 0
Current children cumulated CPU time (s) 2.86
Current children cumulated vsize (KiB) 11588

Child status: 0
Real time (s): 2.91417
CPU time (s): 2.88156
CPU user time (s): 2.86556
CPU system time (s): 0.015997
CPU usage (%): 98.8811
Max. virtual memory (cumulated for all children) (KiB): 11588

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.86556
system time used= 0.015997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3239
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= 129

runsolver used 0.004999 second user time and 0.014997 second system time

The end

Launcher Data

Begin job on node57 at 2009-07-16 06:34:18
IDJOB=2080834
IDBENCH=57180
IDSOLVER=734
FILE ID=node57/2080834-1247718858
PBS_JOBID= 9521441
Free space on /tmp= 66356 MiB

SOLVER NAME= pcs-restart 0.2.restart
BENCH NAME= CPAI08/csp/langford3/normalized-langford-3-19.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2080834-1247718858/watcher-2080834-1247718858 -o /tmp/evaluation-result-2080834-1247718858/solver-2080834-1247718858 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 806142990 HOME/instance-2080834-1247718858.xml

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

MD5SUM BENCH= aaae6bd1bcabe60d1f4e8682f4b12268
RANDOM SEED=806142990

node57.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		: 3000.261
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		: 3000.261
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:       1119744 kB
Buffers:         84060 kB
Cached:         702428 kB
SwapCached:          0 kB
Active:         265560 kB
Inactive:       598392 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1119744 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2148 kB
Writeback:           0 kB
Mapped:          97888 kB
Slab:            57312 kB
Committed_AS:   609160 kB
PageTables:       1968 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= 66356 MiB
End job on node57 at 2009-07-16 06:34:21