Trace number 37681

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 NameAnswerObjective functionCPU timeWall clock time
Pueblo 1.3OPT164393 9.8875 9.89706

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/
MIPLIB/miplib/normalized-reduced-mps-v2-20-10-pipex.opb
MD5SUMed5b5ce3af44efa2d285a6206b4187fd
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark164393
Best CPU time to get the best result obtained on this benchmark0.118981
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 164393
Optimality of the best value was proved YES
Number of variables48
Total number of constraints25
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)16
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint3
Maximum length of a constraint16
Number of terms in the objective function 48
Biggest coefficient in the objective function 22495
Number of bits for the biggest coefficient in the objective function 15
Sum of the numbers in the objective function 524314
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 22495
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 524314
Number of bits of the biggest sum of numbers20
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data (download as text)

0.00	c Pueblo version 1.4 (September 2005)
0.00	c Developed @ University of Michigan, Ann Arbor, MI
0.00	c  by Hossein Sheini
0.01	c starting to Solve
0.01	c #variables read: 48 - #constraints read: 42
0.01	o 183894
0.01	o 183452
0.01	o 182867
0.01	o 181803
0.02	o 181340
0.02	o 179223
0.03	o 172522
0.04	o 172007
0.04	o 168106
0.07	o 168047
0.55	o 167296
1.02	o 165167
3.28	o 165022
3.29	o 164731
3.31	o 164393
9.89	c optimum objective found = 164393
9.89	c total time              : 9.88 s
9.89	s OPTIMUM FOUND
9.89	v x1 x2 -x3 -x4 -x5 -x6 -x7 -x8 -x9 -x10 x11 -x12 x13 -x14 -x15 -x16 -x17 -x18 -x19 -x20 -x21 -x22 x23 x24 -x25 -x26 -x27 x28 -x29 x30
9.89	v x31 x32 -x33 -x34 x35 x36 x37 x38 -x39 -x40 x41 x42 -x43 -x44 -x45 -x46 -x47 -x48

Verifier Data (download as text)

OK	164393

Watcher Data (download as text)

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1830 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
runsolver version 3.0.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node17/watcher-37681-1149346162 -o ROOT/results/node17/solver-37681-1149346162 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user8/Pueblo13 ROOT/tmp/node17/37681-1149346162/instance-37681-1149346162.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.92 0.97 0.94 3/64 3856
/proc/meminfo: memFree=1750520/2055920 swapFree=4180988/4192956
[pid=3856] ppid=3854 vsize=172 CPUtime=0
/proc/3856/stat : 3856 (Pueblo13) D 3854 3856 3810 0 -1 4194304 38 0 0 0 0 0 0 0 19 0 1 0 200279529 176128 23 18446744073709551615 134512640 134579064 4294956672 18446744073709551615 2859812 0 2147483391 4096 0 18446744072099781622 0 0 17 1 0 0
/proc/3856/statm: 43 23 18 16 0 2 0

Child status: 30
Real time (s): 9.89706
CPU time (s): 9.8875
CPU user time (s): 9.64553
CPU system time (s): 0.241963
CPU usage (%): 99.9034
Max. virtual memory (cumulated for all children) (Kb): 0

Launcher Data (download as text)

Begin job on node17 on Sat Jun  3 14:49:22 UTC 2006


FILE ID= 37681-1149346162

PBS_JOBID= 310698

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/miplib/normalized-reduced-mps-v2-20-10-pipex.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user8/Pueblo13 ROOT/tmp/node17/37681-1149346162/instance-37681-1149346162.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node17/watcher-37681-1149346162 -o ROOT/results/node17/solver-37681-1149346162 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user8/Pueblo13 ROOT/tmp/node17/37681-1149346162/instance-37681-1149346162.opb

MD5SUM SOLVER= b45add8200bccdf53727749bff226bd1
MD5SUM BENCH=  ed5b5ce3af44efa2d285a6206b4187fd

RANDOM SEED= 78951834


/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		: 3000.278
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		: 3000.278
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:       1750664 kB
Buffers:         10096 kB
Cached:         229420 kB
SwapCached:       3584 kB
Active:          45832 kB
Inactive:       202312 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1750664 kB
SwapTotal:     4192956 kB
SwapFree:      4180988 kB
Dirty:             152 kB
Writeback:           0 kB
Mapped:          14664 kB
Slab:            43008 kB
Committed_AS:   347772 kB
PageTables:       1476 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node17 on Sat Jun  3 14:49:32 UTC 2006