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/mps-v2-20-10/MIPLIB/miplib3/normalized-mps-v2-20-10-stein27.opb
MD5SUM5cfd2609faa97ca60458112609ce37ee
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
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 numbers6
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02284
Number of variables27
Total number of constraints145
Number of constraints which are clauses117
Number of constraints which are cardinality constraints (but not clauses)28
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint27

Trace number 41215 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-06-09 08:20:35 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29286 boxname=wulflinc1 idbench=1070 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  5cfd2609faa97ca60458112609ce37ee  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-stein27.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-stein27.opb
IDLAUNCH: 29286
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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	: 2
cpu MHz		: 451.053
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        899080 kB
Buffers:         14876 kB
Cached:          97136 kB
SwapCached:       1140 kB
Active:          25960 kB
Inactive:        88188 kB
HighTotal:      131008 kB
HighFree:        31668 kB
LowTotal:       903652 kB
LowFree:        867412 kB
SwapTotal:     2097136 kB
SwapFree:      2094820 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5260 kB
Slab:            15624 kB
Committed_AS:    92708 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 08:21:09 (client local time) WITH STATUS 30 IN 33.8878 SECONDS
stats: 29286 0 33.8878 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 0.065 s
c Initial Lower Bound: 13
c Lower Bound Elapsed time: 0.021
c Not use computed LB before first solution.
c NEW SOLUTION FOUND: 25 @ 0.087
c NEW SOLUTION FOUND: 24 @ 0.091
c NEW SOLUTION FOUND: 23 @ 0.093
c NEW SOLUTION FOUND: 22 @ 0.096
c NEW SOLUTION FOUND: 21 @ 0.098
c NEW SOLUTION FOUND: 20 @ 0.1
c NEW SOLUTION FOUND: 19 @ 0.103
c NEW SOLUTION FOUND: 18 @ 0.131
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: 33.879 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
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.91 0.95 0.90 1/55 1443
Raw data (stat): 1443 (runsolver) R 1442 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 851932253 884736 94 4294967295 134512640 135332820 3221224448 3221219628 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0009 s]
Raw data (loadavg): 0.93 0.95 0.90 2/55 1443
Raw data (stat): 1443 (bsolo_lpr_cuts-) R 1442 8378 8377 0 -1 0 7328 0 0 0 960 37 0 0 25 0 1 0 851932253 7462912 1102 4294967295 134512640 134716908 3221224560 3221220832 1074799270 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1822 1102 1111 63 0 1759 0
vsize: 7288
[startup+20.0012 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 1443
Raw data (stat): 1443 (bsolo_lpr_cuts-) R 1442 8378 8377 0 -1 0 22745 0 0 0 1913 84 0 0 25 0 1 0 851932253 8314880 1345 4294967295 134512640 134716908 3221224560 3221222916 1077374583 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2030 1345 1111 63 0 1967 0
vsize: 8120
[startup+30.0019 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 1443
Raw data (stat): 1443 (bsolo_lpr_cuts-) R 1442 8378 8377 0 -1 0 39815 0 0 0 2866 130 0 0 25 0 1 0 851932253 9379840 1526 4294967295 134512640 134716908 3221224560 3221221548 1077404742 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2290 1528 1111 63 0 2227 0
vsize: 9160
[startup+33.9212 s]
Raw data (loadavg): 0.95 0.96 0.91 1/54 1443
Raw data (stat): 1443 (bsolo_lpr_cuts-) R 1442 8378 8377 0 -1 0 39815 0 0 0 2866 130 0 0 25 0 1 0 851932253 9379840 1526 4294967295 134512640 134716908 3221224560 3221221548 1077404742 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2290 1528 1111 63 0 2227 0
vsize: 0

Child status: 30
Real time (s): 33.921
CPU time (s): 33.8878
CPU user time (s): 32.3791
CPU system time (s): 1.50877
CPU usage (%): 99.9023
Max. virtual memory (Kb): 9160
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	18
#### END VERIFIER DATA ####