Trace number 253210

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
Diarmuid-wtdi 2006-12-21UNSAT 0.041992 0.0428459

DiagnosticValue
CHECKS996
CHECKS498
NODES2
NODES4

General information on the benchmark

Namecoloring/
geom-40-2-ext.xml
MD5SUM4b03e5504b43f1baf966786915db3fbb
Bench Category2-ARY-EXT (binary constraints in extension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.003998
SatisfiableNO
(Un)Satisfiability was proved
Number of variables40
Number of constraints78
Maximum constraint arity2
Maximum domain size2
Number of constraints which are defined in extension78
Number of constraints which are defined in intension0
Global constraints used (with number of constraints)

Solver Data (download as text)

0.04	c Nodes on final run 2
0.04	s UNSATISFIABLE
0.04	d NODES 2
0.04	d CHECKS 498
0.04	c Nodes on final run 2
0.04	s UNSATISFIABLE
0.04	d NODES 4
0.04	d CHECKS 996
0.04	c Solved on restart 1
c 
c 
c 
c conversion script
c 
c

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/node42/watcher-253210-1168703638 -o ROOT/results/node42/solver-253210-1168703638 -C 1800 -M 900 /tmp/evaluation/253210-1168703638/solver 

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: 0.32 1.38 1.62 4/68 29460
/proc/meminfo: memFree=1233720/2055920 swapFree=4191892/4192956
[pid=29459] ppid=29457 vsize=5352 CPUtime=0
/proc/29459/stat : 29459 (solver) R 29457 29459 29100 0 -1 4194304 283 174 0 0 0 0 0 0 18 0 1 0 218765652 5480448 229 18446744073709551615 4194304 4889804 548682069344 18446744073709551615 259415312121 0 65536 4100 65536 0 0 0 17 1 0 0
/proc/29459/statm: 1338 229 192 169 0 49 0

Child status: 0
Real time (s): 0.0428459
CPU time (s): 0.041992
CPU user time (s): 0.033994
CPU system time (s): 0.007998
CPU usage (%): 98.007
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.033994
system time used= 0.007998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1136
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= 33
involuntary context switches= 5

runsolver used 0.001999 s user time and 0.007998 s system time

The end

Launcher Data (download as text)

Begin job on node42 on Sat Jan 13 15:54:09 UTC 2007


IDJOB= 253210
IDBENCH= 12984
IDSOLVER= 62
FILE ID= node42/253210-1168703638

PBS_JOBID= 3547189

Free space on /tmp= 66564 MiB

SOLVER NAME= Diarmuid-wtdi 2006-12-21
BENCH NAME= HOME/pub/bench/CPAI06/coloring/geom-40-2-ext.xml
COMMAND LINE= /tmp/evaluation/253210-1168703638/solver
CONVERSION COMMAND LINE= runsolver -w ROOT/results/node42/convwatcher-253210-1168703638 -o ROOT/results/node42/conversion-253210-1168703638 -C 600 -M 900 /tmp/evaluation/253210-1168703638/conversion /tmp/evaluation/253210-1168703638/unknown
CONVERSION RUNSOLVER STATUS CODE= 0
CONVERSION STATUS CODE= 0

RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node42/watcher-253210-1168703638 -o ROOT/results/node42/solver-253210-1168703638 -C 1800 -M 900  /tmp/evaluation/253210-1168703638/solver

META MD5SUM SOLVER= d524ecf1110edbc743abd2f199c280bf
MD5SUM BENCH=  4b03e5504b43f1baf966786915db3fbb

RANDOM SEED= 704232955

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		: 3000.229
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		: 3000.229
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:       1234120 kB
Buffers:         45648 kB
Cached:         678536 kB
SwapCached:        492 kB
Active:          72036 kB
Inactive:       672412 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1234120 kB
SwapTotal:     4192956 kB
SwapFree:      4191892 kB
Dirty:             612 kB
Writeback:           0 kB
Mapped:          28932 kB
Slab:            63112 kB
Committed_AS:  4465780 kB
PageTables:       1616 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= 66564 MiB



End job on node42 on Sat Jan 13 15:54:25 UTC 2007