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:
  1. 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.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
  3. 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.
  4. 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

Namenormalized-opb/submitted/manquinho/routing/normalized-s4-4-3-6pb.opb
MD5SUMc12951e903009dc00793ce72594cf3ba
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 66
Optimality of the best value was proved NO
Number of terms in the objective function 624
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 624
Number of bits of the sum of numbers in the objective function 10
Biggest number in a constraint 3
Number of bits of the biggest number in a constraint 2
Biggest sum of numbers in a constraint 624
Number of bits of the biggest sum of numbers10
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.03684
Number of variables624
Total number of constraints1884
Number of constraints which are clauses1860
Number of constraints which are cardinality constraints (but not clauses)24
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint2
Maximum length of a constraint26

Trace number 24348

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-09 19:04:42 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2171 boxname=wulflinc31 idbench=242 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  c12951e903009dc00793ce72594cf3ba  /oldhome/oroussel/tmp/wulflinc31/normalized-s4-4-3-6pb.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc31/normalized-s4-4-3-6pb.opb
IDLAUNCH: 2171
/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:        136980 kB
Buffers:         45204 kB
Cached:         818024 kB
SwapCached:        644 kB
Active:         492488 kB
Inactive:       373060 kB
HighTotal:      131008 kB
HighFree:          532 kB
LowTotal:       903652 kB
LowFree:        136448 kB
SwapTotal:     2097892 kB
SwapFree:      2096612 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5608 kB
Slab:            26284 kB
Committed_AS:    63652 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-09 19:05:15 (client local time) WITH STATUS 30 IN 32.4691 SECONDS
stats: 2171 0 32.4691 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 624 variables and 1884 constraints.
c After prepocess the problem consists of 520 variables and 1568 constraints.
c preprocess terminated 0.471 s
c Initial Lower Bound: 65
c Lower Bound Elapsed time: 0.454333
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 66 @ 9.566
s OPTIMUM FOUND
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c Exit Code: 30
c Total time: 32.44 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): 0.90 0.94 0.90 2/54 1302
Raw data (stat): 1302 (runsolver) R 1301 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 702982832 1056768 100 4294967295 134512640 135381576 3221221680 3221216896 135158418 0 2147483391 1 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+10.0009 s]
Raw data (loadavg): 0.91 0.95 0.91 2/54 1302
Raw data (stat): 1302 (bsolo_lpr_cuts) R 1301 7876 7672 0 -1 0 4653 0 0 0 982 13 0 0 25 0 1 0 702982832 9351168 1438 4294967295 134512640 134714508 3221221776 3221217984 1074815247 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 2283 1438 1111 63 0 2220 0
vsize: 9132
[startup+20.0019 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 1302
Raw data (stat): 1302 (bsolo_lpr_cuts) R 1301 7876 7672 0 -1 0 9131 0 0 0 1969 26 0 0 25 0 1 0 702982832 9461760 1477 4294967295 134512640 134714508 3221221776 3221218016 1075115696 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 2310 1477 1111 63 0 2247 0
vsize: 9240
[startup+30.0018 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 1302
Raw data (stat): 1302 (bsolo_lpr_cuts) R 1301 7876 7672 0 -1 0 13744 0 0 0 2958 37 0 0 25 0 1 0 702982832 8376320 1373 4294967295 134512640 134714508 3221221776 3221220160 1074153782 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 2045 1373 1111 63 0 1982 0
vsize: 8180
[startup+32.5075 s]
Raw data (loadavg): 0.94 0.95 0.91 1/53 1302
Raw data (stat): 1302 (bsolo_lpr_cuts) R 1301 7876 7672 0 -1 0 13744 0 0 0 2958 37 0 0 25 0 1 0 702982832 8376320 1373 4294967295 134512640 134714508 3221221776 3221220160 1074153782 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 2045 1373 1111 63 0 1982 0
vsize: 0

Child status: 30
Real time (s): 32.5072
CPU time (s): 32.4691
CPU user time (s): 32.0541
CPU system time (s): 0.414936
CPU usage (%): 99.8826
Max. virtual memory (Kb): 9240
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	66
#### END VERIFIER DATA ####