Trace number 2080943

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 0.3.2SAT 0.636902 0.649721

DiagnosticValue
ASSIGNMENTS302

General information on the benchmark

Namecsp/langford3/
normalized-langford-3-9.xml
MD5SUM4946dac57d3a5f718abc011f73dae562
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 benchmark0.030994
Satisfiable
(Un)Satisfiability was proved
Number of variables27
Number of constraints369
Maximum constraint arity2
Maximum domain size27
Number of constraints which are defined in extension0
Number of constraints which are defined in intension369
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
0.17/0.21	c Seed is 657821808
0.17/0.21	c Constructing HOME/instance-2080943-1247719156.xml 
0.17/0.21	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,V0)
0.17/0.21	c  with 370 constraints
0.17/0.21	c Solving 302 backtracks 5 restarts
0.57/0.64	s SATISFIABLE
0.57/0.64	c V0=22, V1=14, V2=0, V3=1, V4=7, V5=9, V6=2, V7=3, V8=5, V9=24, V10=17, V11=4, V12=6, V13=13, V14=16, V15=10, V16=12, V17=15, V18=26, V19=20, V20=8, V21=11, V22=19, V23=23, V24=18, V25=21, V26=25, 
0.57/0.64	v 22 14 0 1 7 9 2 3 5 24 17 4 6 13 16 10 12 15 26 20 8 11 19 23 18 21 25 
0.57/0.64	d ASSIGNMENTS 302

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-2080943-1247719156/watcher-2080943-1247719156 -o /tmp/evaluation-result-2080943-1247719156/solver-2080943-1247719156 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 657821808 HOME/instance-2080943-1247719156.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 4/81 12437
/proc/meminfo: memFree=1475880/2055920 swapFree=4192812/4192956
[pid=12437] ppid=12435 vsize=5356 CPUtime=0
/proc/12437/stat : 12437 (pcssolve) R 12435 12437 10284 0 -1 4194304 273 0 0 0 0 0 0 0 20 0 1 0 58978933 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 248761608863 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/12437/statm: 1339 241 200 169 0 50 0
[pid=12438] ppid=12437 vsize=5356 CPUtime=0
/proc/12438/stat : 12438 (pcssolve) R 12437 12437 10284 0 -1 4194368 0 0 0 0 0 0 0 0 20 0 1 0 58978933 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 248761608863 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/12438/statm: 1339 241 200 169 0 50 0

[startup+0.017621 s]
/proc/loadavg: 1.92 1.98 1.99 4/81 12437
/proc/meminfo: memFree=1475880/2055920 swapFree=4192812/4192956
[pid=12437] ppid=12435 vsize=5360 CPUtime=0
/proc/12437/stat : 12437 (pcssolve) R 12435 12437 10284 0 -1 4194304 375 823 0 0 0 0 0 0 24 0 1 0 58978933 5488640 245 996147200 4194304 4889804 548682068800 18446744073709551615 4375873 0 0 4100 65536 0 0 0 17 1 0 0
/proc/12437/statm: 1340 245 203 169 0 51 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 5360

[startup+0.10163 s]
/proc/loadavg: 1.92 1.98 1.99 4/81 12437
/proc/meminfo: memFree=1475880/2055920 swapFree=4192812/4192956
[pid=12437] ppid=12435 vsize=4764 CPUtime=0.08
/proc/12437/stat : 12437 (pcs.big) R 12435 12437 10284 0 -1 4194304 907 823 0 0 8 0 0 0 18 0 1 0 58978933 4878336 516 996147200 134512640 135215973 4294956304 18446744073709551615 134583815 0 0 4096 0 0 0 0 17 1 0 0
/proc/12437/statm: 1191 516 408 171 0 116 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4764

[startup+0.301646 s]
/proc/loadavg: 1.92 1.98 1.99 4/81 12437
/proc/meminfo: memFree=1475880/2055920 swapFree=4192812/4192956
[pid=12437] ppid=12435 vsize=5152 CPUtime=0.27
/proc/12437/stat : 12437 (pcs.big) R 12435 12437 10284 0 -1 4194304 1017 823 0 0 27 0 0 0 19 0 1 0 58978933 5275648 626 996147200 134512640 135215973 4294956304 18446744073709551615 134739651 0 0 4096 0 0 0 0 17 1 0 0
/proc/12437/statm: 1288 626 408 171 0 213 0
Current children cumulated CPU time (s) 0.27
Current children cumulated vsize (KiB) 5152

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

[startup+0.501665 s]
/proc/loadavg: 1.92 1.98 1.99 4/81 12437
/proc/meminfo: memFree=1475880/2055920 swapFree=4192812/4192956
[pid=12437] ppid=12435 vsize=5544 CPUtime=0.47
/proc/12437/stat : 12437 (pcs.big) R 12435 12437 10284 0 -1 4194304 1111 823 0 0 47 0 0 0 21 0 1 0 58978933 5677056 720 996147200 134512640 135215973 4294956304 18446744073709551615 134583607 0 0 4096 0 0 0 0 17 1 0 0
/proc/12437/statm: 1386 720 408 171 0 311 0
Current children cumulated CPU time (s) 0.47
Current children cumulated vsize (KiB) 5544

[startup+0.601675 s]
/proc/loadavg: 1.92 1.98 1.99 4/81 12437
/proc/meminfo: memFree=1475880/2055920 swapFree=4192812/4192956
[pid=12437] ppid=12435 vsize=5808 CPUtime=0.57
/proc/12437/stat : 12437 (pcs.big) R 12435 12437 10284 0 -1 4194304 1159 823 0 0 57 0 0 0 22 0 1 0 58978933 5947392 768 996147200 134512640 135215973 4294956304 18446744073709551615 134583815 0 0 4096 0 0 0 0 17 1 0 0
/proc/12437/statm: 1452 768 408 171 0 377 0
Current children cumulated CPU time (s) 0.57
Current children cumulated vsize (KiB) 5808

Child status: 0
Real time (s): 0.649721
CPU time (s): 0.636902
CPU user time (s): 0.625904
CPU system time (s): 0.010998
CPU usage (%): 98.027
Max. virtual memory (cumulated for all children) (KiB): 5808

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.625904
system time used= 0.010998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2006
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= 22
involuntary context switches= 35

runsolver used 0.003999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node55 at 2009-07-16 06:39:16
IDJOB=2080943
IDBENCH=57196
IDSOLVER=733
FILE ID=node55/2080943-1247719156
PBS_JOBID= 9521446
Free space on /tmp= 66376 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/langford3/normalized-langford-3-9.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2080943-1247719156/watcher-2080943-1247719156 -o /tmp/evaluation-result-2080943-1247719156/solver-2080943-1247719156 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 657821808 HOME/instance-2080943-1247719156.xml

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

MD5SUM BENCH= 4946dac57d3a5f718abc011f73dae562
RANDOM SEED=657821808

node55.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		: 3000.231
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		: 3000.231
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:       1476360 kB
Buffers:         80532 kB
Cached:         366500 kB
SwapCached:          0 kB
Active:         225648 kB
Inactive:       281920 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1476360 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1808 kB
Writeback:           0 kB
Mapped:          80976 kB
Slab:            57240 kB
Committed_AS:   606328 kB
PageTables:       1884 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= 66372 MiB
End job on node55 at 2009-07-16 06:39:17