Trace number 2087684

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 09UNSAT 0.093984 0.101536

General information on the benchmark

Namecsp/os-taillard-7/
normalized-os-taillard-7-95-8.xml
MD5SUM4dcd5adff23a10b18590d338d8ee17e8
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 benchmark0.070988
Satisfiable
(Un)Satisfiability was proved
Number of variables49
Number of constraints294
Maximum constraint arity2
Maximum domain size430
Number of constraints which are defined in extension0
Number of constraints which are defined in intension294
Global constraints used (with number of constraints)

Solver Data 

0.00/0.02	c bpsolver version 6.29.2009
0.00/0.02	c converting(HOME/instance-2087684-1247386524)
0.00/0.08	c Converted in 23 ms
0.00/0.09	c solving(HOME/instance-2087684-1247386524,1800000)
0.00/0.09	c solving(HOME/instance-2087684-1247386524,1800000)
0.00/0.10	c before_labeling
0.00/0.10	s UNSATISFIABLE
0.00/0.10	
0.00/0.10	
0.00/0.10	c Time=12 ms Backtracks=0
0.00/0.10

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2087684-1247386524/watcher-2087684-1247386524 -o /tmp/evaluation-result-2087684-1247386524/solver-2087684-1247386524 -C 1800 -W 2000 -M 900 HOME/solver HOME/instance-2087684-1247386524 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): 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: 2.00 2.00 2.00 4/80 31530
/proc/meminfo: memFree=1206616/2055920 swapFree=4192812/4192956
[pid=31530] ppid=31528 vsize=7000 CPUtime=0
/proc/31530/stat : 31530 (bprolog) R 31528 31530 30366 0 -1 4194304 586 0 0 0 0 0 0 0 20 0 1 0 25716264 7168000 304 996147200 134512640 135105188 4294956096 18446744073709551615 134530920 0 0 4096 0 0 0 0 17 1 0 0
/proc/31530/statm: 1750 304 72 144 0 1234 0

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

Child status: 0
Real time (s): 0.101536
CPU time (s): 0.093984
CPU user time (s): 0.052991
CPU system time (s): 0.040993
CPU usage (%): 92.5622
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.052991
system time used= 0.040993
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1213
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= 31

runsolver used 0.002999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node43 at 2009-07-12 10:15:24
IDJOB=2087684
IDBENCH=58771
IDSOLVER=770
FILE ID=node43/2087684-1247386524
PBS_JOBID= 9507160
Free space on /tmp= 66224 MiB

SOLVER NAME= bpsolver 09
BENCH NAME= CPAI08/csp/os-taillard-7/normalized-os-taillard-7-95-8.xml
COMMAND LINE= HOME/solver BENCHNAMENOEXT TIMEOUT
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2087684-1247386524/watcher-2087684-1247386524 -o /tmp/evaluation-result-2087684-1247386524/solver-2087684-1247386524 -C 1800 -W 2000 -M 900  HOME/solver HOME/instance-2087684-1247386524 1800

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

MD5SUM BENCH= 4dcd5adff23a10b18590d338d8ee17e8
RANDOM SEED=1091252621

node43.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		: 3000.213
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	: 5931.00
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		: 3000.213
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:       1207096 kB
Buffers:         68460 kB
Cached:         342192 kB
SwapCached:          0 kB
Active:         554812 kB
Inactive:       214212 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1207096 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1436 kB
Writeback:           0 kB
Mapped:         376172 kB
Slab:            64476 kB
Committed_AS:   967084 kB
PageTables:       2524 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= 66224 MiB
End job on node43 at 2009-07-12 10:15:24