Trace number 199104

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 3.0UNSAT 0.32495 0.33109

DiagnosticValue
CHECKS10090700
NODES0

General information on the benchmark

Nameknights/
knights-15-5.xml
MD5SUM41e76be07d6f85e9fae64f89592fb309
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 benchmark0.308952
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables5
Number of constraints10
Maximum constraint arity2
Maximum domain size225
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)

0.32	s UNSATISFIABLE
0.32	d CHECKS 1.00907e+07
0.32	d NODES 0
0.32

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/node10/watcher-199104-1168132504 -o ROOT/results/node10/solver-199104-1168132504 -C 1800 -M 900 /tmp/evaluation/199104-1168132504/VALCSP /tmp/evaluation/199104-1168132504/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: 1.75 1.88 1.94 5/87 15890
/proc/meminfo: memFree=1362392/2055920 swapFree=4178332/4192956
[pid=15889] ppid=15887 vsize=1600 CPUtime=0
/proc/15889/stat : 15889 (VALCSP) R 15887 15889 15710 0 -1 4194304 157 0 0 0 0 0 0 0 20 0 1 0 161645499 1638400 135 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 134530948 0 0 4096 0 0 0 0 17 1 0 0
/proc/15889/statm: 400 135 64 8 0 72 0

[startup+0.107349 s]
/proc/loadavg: 1.75 1.88 1.94 5/87 15890
/proc/meminfo: memFree=1362392/2055920 swapFree=4178332/4192956
[pid=15889] ppid=15887 vsize=2656 CPUtime=0.09
/proc/15889/stat : 15889 (VALCSP) R 15887 15889 15710 0 -1 4194304 407 0 0 0 9 0 0 0 20 0 1 0 161645499 2719744 385 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 134530234 0 0 4096 0 0 0 0 17 1 0 0
/proc/15889/statm: 664 385 64 8 0 336 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2656

Child status: 0
Real time (s): 0.33109
CPU time (s): 0.32495
CPU user time (s): 0.320951
CPU system time (s): 0.003999
CPU usage (%): 98.1455
Max. virtual memory (cumulated for all children) (KiB): 3448

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.320951
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= 640
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= 9

runsolver used 0.001999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node10 on Sun Jan  7 01:15:04 UTC 2007


IDJOB= 199104
IDBENCH= 3593
FILE ID= node10/199104-1168132504

PBS_JOBID= 3477761

Free space on /tmp= 66358 MiB

BENCH NAME= HOME/pub/bench/CPAI06/knights/knights-15-5.xml
COMMAND LINE= /tmp/evaluation/199104-1168132504/VALCSP /tmp/evaluation/199104-1168132504/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node10/watcher-199104-1168132504 -o ROOT/results/node10/solver-199104-1168132504 -C 1800 -M 900  /tmp/evaluation/199104-1168132504/VALCSP /tmp/evaluation/199104-1168132504/unknown.xml

META MD5SUM SOLVER= 6fc756be3a7e45a17a81a19ce431bc48
MD5SUM BENCH=  41e76be07d6f85e9fae64f89592fb309

RANDOM SEED= 710852032

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		: 3000.232
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:       1362872 kB
Buffers:         57464 kB
Cached:         509372 kB
SwapCached:       2120 kB
Active:         239816 kB
Inactive:       363492 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1362872 kB
SwapTotal:     4192956 kB
SwapFree:      4178332 kB
Dirty:             272 kB
Writeback:           0 kB
Mapped:          47584 kB
Slab:            74508 kB
Committed_AS:  3904396 kB
PageTables:       2184 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= 66358 MiB



End job on node10 on Sun Jan  7 01:15:04 UTC 2007