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/miplib/normalized-mps-v2-13-7-mod013.opb
MD5SUM	b964292d4197638ce79b3f213e8fe89b
Bench Category	optimization, medium integers (OPTMEDINT)
Has Objective Function	YES
Satisfiable	YES
(Un)Satisfiability was proved	YES
Best value of the objective function	5130240
Optimality of the best value was proved	NO
Number of terms in the objective function	1008
Biggest coefficient in the objective function	366477312
Number of bits for the biggest coefficient in the objective function	29
Sum of the numbers in the objective function	12643636975
Number of bits of the sum of numbers in the objective function	34
Biggest number in a constraint	366477312
Number of bits of the biggest number in a constraint	29
Biggest sum of numbers in a constraint	12643636975
Number of bits of the biggest sum of numbers	34
Best result obtained on this benchmark	SAT
Best CPU time to get the best result obtained on this benchmark	1189.01
Number of variables	1008
Total number of constraints	110
Number of constraints which are clauses	0
Number of constraints which are cardinality constraints (but not clauses)	48
Number of constraints which are nor clauses,nor cardinality constraints	62
Minimum length of a constraint	1
Maximum length of a constraint	160

Trace number 27472

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc30 THE 2005-05-24 22:21:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=17044 boxname=wulflinc30 idbench=1312 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  b964292d4197638ce79b3f213e8fe89b  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-mod013.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-mod013.opb
IDLAUNCH: 17044
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        898600 kB
Buffers:         12216 kB
Cached:         101948 kB
SwapCached:       1572 kB
Active:          22280 kB
Inactive:        94896 kB
HighTotal:      131008 kB
HighFree:        79212 kB
LowTotal:       903652 kB
LowFree:        819388 kB
SwapTotal:     2097892 kB
SwapFree:      2095420 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5004 kB
Slab:            13144 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 22:21:57 (client local time) WITH STATUS 20 IN 1.9597 SECONDS
stats: 17044 7 1.9597 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 1008 variables and 76 constraints.
c After prepocess the problem consists of 581 variables and 101 constraints.
c preprocess terminated 0.59 s
c Initial Lower Bound: 3277024
c Lower Bound Elapsed time: 0.1168
c Use computed LB before first solution.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 1.947 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): 0.91 0.97 0.98 2/54 27585
Raw data (stat): 27585 (runsolver) R 27584 22056 22055 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833795755 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+1.97951 s]
Raw data (loadavg): 0.91 0.97 0.98 1/53 27585
Raw data (stat): 27585 (runsolver) R 27584 22056 22055 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833795755 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 20
Real time (s): 1.97922
CPU time (s): 1.9597
CPU user time (s): 1.87871
CPU system time (s): 0.080987
CPU usage (%): 99.0137
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####