Trace number 268160

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, and are wall clock time (not CPU 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
VALCSP 3.1UNSAT 1.21881 1.22135

DiagnosticValue
CHECKS56817300
NODES0

General information on the benchmark

Nameknights/
knights-20-5.xml
MD5SUM5042df59376f87303bcd262d9d1478d3
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 benchmark0.84787
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables5
Number of constraints10
Maximum constraint arity2
Maximum domain size400
Number of constraints which are defined in extension0
Number of constraints which are defined in intension10
Global constraints used (with number of constraints)

Solver Data (download as text)

1.21	s UNSATISFIABLE
1.21	d CHECKS 5.68173e+07
1.21	d NODES 0

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node41/watcher-268160-1168978054 -o ROOT/results/node41/solver-268160-1168978054 -C 1800 -M 900 /tmp/evaluation/268160-1168978054/VALCSP /tmp/evaluation/268160-1168978054/unknown.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 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

/proc/loadavg: 0.65 0.20 0.06 5/73 11949
/proc/meminfo: memFree=1627064/2055920 swapFree=4191892/4192956
[pid=11948] ppid=11946 vsize=2128 CPUtime=0
/proc/11948/stat : 11948 (VALCSP) R 11946 11948 11397 0 -1 4194304 269 0 0 0 0 0 0 0 18 0 1 0 246205096 2179072 247 18446744073709551615 134512640 134547260 4294956736 18446744073709551615 134529339 0 0 4096 0 0 0 0 17 1 0 0
/proc/11948/statm: 532 247 64 8 0 204 0

[startup+0.103628 s]
/proc/loadavg: 0.65 0.20 0.06 5/73 11949
/proc/meminfo: memFree=1627064/2055920 swapFree=4191892/4192956
[pid=11948] ppid=11946 vsize=2656 CPUtime=0.1
/proc/11948/stat : 11948 (VALCSP) R 11946 11948 11397 0 -1 4194304 427 0 0 0 10 0 0 0 18 0 1 0 246205096 2719744 405 18446744073709551615 134512640 134547260 4294956736 18446744073709551615 134529392 0 0 4096 0 0 0 0 17 1 0 0
/proc/11948/statm: 664 405 64 8 0 336 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2656

[startup+0.511662 s]
/proc/loadavg: 0.65 0.20 0.06 5/73 11949
/proc/meminfo: memFree=1627064/2055920 swapFree=4191892/4192956
[pid=11948] ppid=11946 vsize=5824 CPUtime=0.51
/proc/11948/stat : 11948 (VALCSP) R 11946 11948 11397 0 -1 4194304 1215 0 0 0 51 0 0 0 21 0 1 0 246205096 5963776 1193 18446744073709551615 134512640 134547260 4294956736 18446744073709551615 134528866 0 0 4096 0 0 0 0 17 1 0 0
/proc/11948/statm: 1456 1193 64 8 0 1128 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 5824

Child status: 0
Real time (s): 1.22135
CPU time (s): 1.21881
CPU user time (s): 1.21481
CPU system time (s): 0.003999
CPU usage (%): 99.792
Max. virtual memory (cumulated for all children) (KiB): 7804

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.21481
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1721
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= 8
involuntary context switches= 3

runsolver used 0.002999 s user time and 0.008998 s system time

The end

Launcher Data (download as text)

Begin job on node41 on Tue Jan 16 20:07:36 UTC 2007


IDJOB= 268160
IDBENCH= 3601
IDSOLVER= 90
FILE ID= node41/268160-1168978054

PBS_JOBID= 3566165

Free space on /tmp= 66565 MiB

SOLVER NAME= VALCSP 3.1
BENCH NAME= HOME/pub/bench/CPAI06/knights/knights-20-5.xml
COMMAND LINE= /tmp/evaluation/268160-1168978054/VALCSP /tmp/evaluation/268160-1168978054/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-268160-1168978054 -o ROOT/results/node41/solver-268160-1168978054 -C 1800 -M 900  /tmp/evaluation/268160-1168978054/VALCSP /tmp/evaluation/268160-1168978054/unknown.xml

META MD5SUM SOLVER= d4fc2c4e0b0392ee9c79e754aa39e238
MD5SUM BENCH=  5042df59376f87303bcd262d9d1478d3

RANDOM SEED= 730146365

TIME LIMIT= 1800 seconds

MEMORY LIMIT= 900 MiB


/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		: 3000.234
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		: 3000.234
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:       1627576 kB
Buffers:         48756 kB
Cached:         280972 kB
SwapCached:        276 kB
Active:         159840 kB
Inactive:       190944 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1627576 kB
SwapTotal:     4192956 kB
SwapFree:      4191892 kB
Dirty:             116 kB
Writeback:           0 kB
Mapped:          30828 kB
Slab:            63056 kB
Committed_AS:  4740004 kB
PageTables:       1820 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= 66565 MiB



End job on node41 on Tue Jan 16 20:07:43 UTC 2007