Trace number 1081655

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
bpsolver 2008-06-27UNSAT 0.547916 0.557715

General information on the benchmark

Namecsp/knights/
normalized-knights-15-9.xml
MD5SUM4ca04c2b4cff6eaa31c1b1eda93cff1e
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 benchmark0.547916
Satisfiable
(Un)Satisfiability was proved
Number of variables9
Number of constraints36
Maximum constraint arity2
Maximum domain size225
Number of constraints which are defined in extension0
Number of constraints which are defined in intension36
Global constraints used (with number of constraints)

Solver Data (download as text)

0.00/0.02	c bpsolver version 6.27.2008
0.00/0.02	c converting(HOME/instance-1081655-1215218212)
0.00/0.03	c Converted in 4 ms
0.00/0.03	c solving(HOME/instance-1081655-1215218212,1800000)
0.48/0.55	c (ffc_inout)
0.48/0.55	s UNSATISFIABLE
0.48/0.55	
0.48/0.55	c Time=515 ms
0.48/0.55

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.5 (c) roussel@cril.univ-artois.fr

command line: /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1081655-1215218212/watcher-1081655-1215218212 -o /tmp/evaluation-result-1081655-1215218212/solver-1081655-1215218212 -C 1800 -W 2200 -M 900 --output-limit 1,15 HOME/solver HOME/instance-1081655-1215218212 1800 

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): 2200 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.00 2.00 2.00 4/73 16627
/proc/meminfo: memFree=1795208/2055920 swapFree=4179680/4192956
[pid=16627] ppid=16625 vsize=18572 CPUtime=0
/proc/16627/stat : 16627 (runsolver) R 16625 16627 13008 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 2000793847 19017728 292 996147200 4194304 4296836 548682068480 18446744073709551615 234211568935 0 0 4096 24578 0 0 0 17 1 0 0
/proc/16627/statm: 4643 292 257 25 0 2626 0

[startup+0.040379 s]
/proc/loadavg: 2.00 2.00 2.00 4/73 16627
/proc/meminfo: memFree=1795208/2055920 swapFree=4179680/4192956
[pid=16627] ppid=16625 vsize=56072 CPUtime=0.02
/proc/16627/stat : 16627 (bprolog) R 16625 16627 13008 0 -1 4194304 1132 0 0 0 2 0 0 0 20 0 1 0 2000793847 57417728 842 996147200 134512640 134990860 4294956096 18446744073709551615 134739827 0 0 4096 2 0 0 0 17 1 0 0
/proc/16627/statm: 14018 842 189 116 0 13529 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 56072

[startup+0.102389 s]
/proc/loadavg: 2.00 2.00 2.00 4/73 16627
/proc/meminfo: memFree=1795208/2055920 swapFree=4179680/4192956
[pid=16627] ppid=16625 vsize=66316 CPUtime=0.08
/proc/16627/stat : 16627 (bprolog) R 16625 16627 13008 0 -1 4194304 1208 0 0 0 8 0 0 0 20 0 2 0 2000793847 67907584 918 996147200 134512640 134990860 4294956096 18446744073709551615 134716894 0 0 4096 2 18446744073709551615 0 0 17 1 0 0
/proc/16627/statm: 16579 918 195 116 0 16090 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 66316

[startup+0.30143 s]
/proc/loadavg: 2.00 2.00 2.00 4/73 16627
/proc/meminfo: memFree=1795208/2055920 swapFree=4179680/4192956
[pid=16627] ppid=16625 vsize=66316 CPUtime=0.28
/proc/16627/stat : 16627 (bprolog) R 16625 16627 13008 0 -1 4194304 1209 0 0 0 28 0 0 0 22 0 2 0 2000793847 67907584 919 996147200 134512640 134990860 4294956096 18446744073709551615 134716955 0 0 4096 2 18446744073709551615 0 0 17 1 0 0
/proc/16627/statm: 16579 919 195 116 0 16090 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 66316

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

[startup+0.501471 s]
/proc/loadavg: 2.00 2.00 2.00 4/73 16627
/proc/meminfo: memFree=1795208/2055920 swapFree=4179680/4192956
[pid=16627] ppid=16625 vsize=66316 CPUtime=0.48
/proc/16627/stat : 16627 (bprolog) R 16625 16627 13008 0 -1 4194304 1210 0 0 0 48 0 0 0 24 0 2 0 2000793847 67907584 920 996147200 134512640 134990860 4294956096 18446744073709551615 134746489 0 0 4096 2 18446744073709551615 0 0 17 1 0 0
/proc/16627/statm: 16579 920 195 116 0 16090 0
Current children cumulated CPU time (s) 0.48
Current children cumulated vsize (KiB) 66316

Child status: 0
Real time (s): 0.557715
CPU time (s): 0.547916
CPU user time (s): 0.536918
CPU system time (s): 0.010998
CPU usage (%): 98.243
Max. virtual memory (cumulated for all children) (KiB): 66316

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.536918
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= 1210
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= 4
involuntary context switches= 44

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node54 at 2008-07-05 02:36:52
IDJOB=1081655
IDBENCH=57121
IDSOLVER=347
FILE ID=node54/1081655-1215218212
PBS_JOBID= 7881665
Free space on /tmp= 66528 MiB

SOLVER NAME= bpsolver 2008-06-27
BENCH NAME= CPAI08/csp/knights/normalized-knights-15-9.xml
COMMAND LINE= HOME/solver BENCHNAMENOEXT TIMEOUT
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1081655-1215218212/watcher-1081655-1215218212 -o /tmp/evaluation-result-1081655-1215218212/solver-1081655-1215218212 -C 1800 -W 2200 -M 900 --output-limit 1,15  HOME/solver HOME/instance-1081655-1215218212 1800

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB

MD5SUM BENCH= 4ca04c2b4cff6eaa31c1b1eda93cff1e
RANDOM SEED=540707967

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		: 3000.279
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		: 3000.279
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:       1795688 kB
Buffers:         30060 kB
Cached:         138304 kB
SwapCached:       6328 kB
Active:         166564 kB
Inactive:        38084 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1795688 kB
SwapTotal:     4192956 kB
SwapFree:      4179680 kB
Dirty:            1356 kB
Writeback:           0 kB
Mapped:          43984 kB
Slab:            40856 kB
Committed_AS:  3920428 kB
PageTables:       1740 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= 66528 MiB
End job on node54 at 2008-07-05 02:36:53