PB'05 competition: run trace

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 in four parts:

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 provide some useful information on the computer.
SOLVER DATA
This is the output of the solver (stdout and stderr).
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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
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.
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.

General information on the benchmark

Name	normalized-opb/mps-v2-13-7/MIPLIB/miplib3/normalized-mps-v2-13-7-stein27.opb
MD5SUM	5cfd2609faa97ca60458112609ce37ee
Bench Category	optimization, small integers (OPTSMALLINT)
Has Objective Function	YES
Satisfiable	YES
(Un)Satisfiability was proved	YES
Best value of the objective function	18
Optimality of the best value was proved	NO
Number of terms in the objective function	27
Biggest coefficient in the objective function	1
Number of bits for the biggest coefficient in the objective function	1
Sum of the numbers in the objective function	27
Number of bits of the sum of numbers in the objective function	5
Biggest number in a constraint	13
Number of bits of the biggest number in a constraint	4
Biggest sum of numbers in a constraint	40
Number of bits of the biggest sum of numbers	6
Best result obtained on this benchmark	SAT
Best CPU time to get the best result obtained on this benchmark	1.01684
Number of variables	27
Total number of constraints	145
Number of constraints which are clauses	117
Number of constraints which are cardinality constraints (but not clauses)	28
Number of constraints which are nor clauses,nor cardinality constraints	0
Minimum length of a constraint	1
Maximum length of a constraint	27

Trace number 25604

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-21 04:46:06 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=18891 boxname=wulflinc31 idbench=1454 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  5cfd2609faa97ca60458112609ce37ee  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-stein27.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-stein27.opb
IDLAUNCH: 18891
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        583648 kB
Buffers:         34956 kB
Cached:         395536 kB
SwapCached:       1172 kB
Active:         299876 kB
Inactive:       132988 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        583396 kB
SwapTotal:     2097892 kB
SwapFree:      2095980 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5356 kB
Slab:            12524 kB
Committed_AS:    63848 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-21 04:47:07 (client local time) WITH STATUS 30 IN 60.1759 SECONDS
stats: 18891 0 60.1759 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 27 variables and 118 constraints.
c After prepocess the problem consists of 27 variables and 118 constraints.
c preprocess terminated 0.064 s
c Initial Lower Bound: 13
c Lower Bound Elapsed time: 0.013
c Not use computed LB before first solution.
c NEW SOLUTION FOUND: 24 @ 0.117
c NEW SOLUTION FOUND: 23 @ 0.121
c NEW SOLUTION FOUND: 22 @ 0.123
c NEW SOLUTION FOUND: 21 @ 0.128
c NEW SOLUTION FOUND: 20 @ 0.141
c NEW SOLUTION FOUND: 19 @ 0.144
c NEW SOLUTION FOUND: 18 @ 0.169
s OPTIMUM FOUND
v -V0001_bit0 V0002_bit0 -V0003_bit0 V0004_bit0 V0005_bit0 V0006_bit0 -V0007_bit0 V0008_bit0 -V0009_bit0 V0010_bit0 -V0011_bit0 -V0012_bit0 V0013_bit0 V0014_bit0 -V0015_bit0 -V0016_bit0 V0017_bit0 V0018_bit0 -V0019_bit0 V0020_bit0 V0021_bit0 V0022_bit0 V0023_bit0 V0024_bit0 V0025_bit0 V0026_bit0 V0027_bit0 
c Exit Code: 30
c Total time: 60.153 s
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Raw data (loadavg): 0.92 0.98 0.91 2/55 5426
Raw data (stat): 5426 (runsolver) R 5425 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 801522575 1056768 100 4294967295 134512640 135381576 3221221680 3221216896 135158418 0 2147483391 1 90112 0 0 0 17 0 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+10.0012 s]
Raw data (loadavg): 0.93 0.98 0.91 2/55 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 14045 0 0 0 950 45 0 0 25 0 1 0 801522575 7110656 1049 4294967295 134512640 134714508 3221221776 3221219616 1074057961 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 1736 1049 1111 63 0 1673 0
vsize: 6944
[startup+20.0023 s]
Raw data (loadavg): 0.94 0.98 0.91 2/55 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 31753 0 0 0 1904 92 0 0 25 0 1 0 801522575 8069120 1284 4294967295 134512640 134714508 3221221776 3221219692 1077377556 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 1970 1284 1111 63 0 1907 0
vsize: 7880
[startup+30.0019 s]
Raw data (loadavg): 0.95 0.98 0.91 2/55 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 47663 0 0 0 2862 134 0 0 25 0 1 0 801522575 8908800 1422 4294967295 134512640 134714508 3221221776 3221218608 1075115403 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2175 1422 1111 63 0 2112 0
vsize: 8700
[startup+40.0019 s]
Raw data (loadavg): 0.96 0.98 0.91 2/55 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 62760 0 0 0 3822 174 0 0 25 0 1 0 801522575 9121792 1547 4294967295 134512640 134714508 3221221776 3221219776 1074916669 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2227 1547 1111 63 0 2164 0
vsize: 8908
[startup+50.0021 s]
Raw data (loadavg): 0.96 0.98 0.91 2/55 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 79067 0 0 0 4780 216 0 0 25 0 1 0 801522575 10031104 1710 4294967295 134512640 134714508 3221221776 3221218300 1076047682 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2449 1710 1111 63 0 2386 0
vsize: 9796
[startup+60.0027 s]
Raw data (loadavg): 0.97 0.98 0.91 2/55 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 97189 0 0 0 5735 261 0 0 25 0 1 0 801522575 10477568 1830 4294967295 134512640 134714508 3221221776 3221219980 1077781665 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2558 1830 1111 63 0 2495 0
vsize: 10232
[startup+60.2102 s]
Raw data (loadavg): 0.97 0.98 0.91 1/54 5426
Raw data (stat): 5426 (bsolo_lpr_cuts) R 5425 7876 7672 0 -1 0 97189 0 0 0 5735 261 0 0 25 0 1 0 801522575 10477568 1830 4294967295 134512640 134714508 3221221776 3221219980 1077781665 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2558 1830 1111 63 0 2495 0
vsize: 0

Child status: 30
Real time (s): 60.21
CPU time (s): 60.1759
CPU user time (s): 57.5393
CPU system time (s): 2.6366
CPU usage (%): 99.9433
Max. virtual memory (Kb): 10232
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	18
#### END VERIFIER DATA ####