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-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-misc02.opb
MD5SUM5128a094f3f47af1a66bc4eb5109f150
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1264768
Optimality of the best value was proved NO
Number of terms in the objective function 21
Biggest coefficient in the objective function 1048576
Number of bits for the biggest coefficient in the objective function 21
Sum of the numbers in the objective function 2097151
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 1048576
Number of bits of the biggest number in a constraint 21
Biggest sum of numbers in a constraint 4762239
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.080987
Number of variables79
Total number of constraints97
Number of constraints which are clauses7
Number of constraints which are cardinality constraints (but not clauses)65
Number of constraints which are nor clauses,nor cardinality constraints25
Minimum length of a constraint1
Maximum length of a constraint69

Trace number 40277 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-06-08 05:57:30 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=28348 boxname=wulflinc1 idbench=1304 idsolver=20 numberseed=0
MD5SUM SOLVER: f6aa7fb267fa9710116626be7e6d3048  /oldhome/oroussel/solvers/bsolo_lpr-v2
MD5SUM BENCH:  5128a094f3f47af1a66bc4eb5109f150  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-misc02.opb
REAL COMMAND:  bsolo_lpr-v2 /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-misc02.opb
IDLAUNCH: 28348
/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:        624252 kB
Buffers:         27780 kB
Cached:         357840 kB
SwapCached:       1164 kB
Active:          36204 kB
Inactive:       351688 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        624000 kB
SwapTotal:     2097136 kB
SwapFree:      2094844 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5256 kB
Slab:            16644 kB
Committed_AS:    92712 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-08 05:57:32 (client local time) WITH STATUS 30 IN 1.18182 SECONDS
stats: 28348 0 1.18182 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 79 variables and 53 constraints.
c After prepocess the problem consists of 72 variables and 67 constraints.
c preprocess terminated 0.095 s
c Initial Lower Bound: 1177728
c Lower Bound Elapsed time: 0.00775
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 1415808 @ 0.393
c NEW SOLUTION FOUND: 1406208 @ 0.398
c NEW SOLUTION FOUND: 1396608 @ 0.399
c NEW SOLUTION FOUND: 1356288 @ 0.41
c NEW SOLUTION FOUND: 1317888 @ 0.413
c NEW SOLUTION FOUND: 1292288 @ 0.504
c NEW SOLUTION FOUND: 1283328 @ 0.588
c NEW SOLUTION FOUND: 1264768 @ 0.742
s OPTIMUM FOUND
v -COL059_bit_7 -COL059_bit_6 -COL059_bit_5 -COL059_bit_4 -COL059_bit_3 -COL059_bit_2 -COL059_bit_1 COL059_bit0 -COL059_bit1 -COL059_bit2 COL059_bit3 COL059_bit4 -COL059_bit5 -COL059_bit6 COL059_bit7 -COL059_bit8 COL059_bit9 COL059_bit10 -COL059_bit11 -COL059_bit12 COL059_bit13 -COL003_bit0 -COL004_bit0 -COL005_bit0 -COL006_bit0 -COL007_bit0 -COL008_bit0 COL009_bit0 -COL010_bit0 COL011_bit0 -COL012_bit0 -COL015_bit0 -COL016_bit0 -COL017_bit0 -COL018_bit0 -COL019_bit0 -COL020_bit0 -COL021_bit0 -COL022_bit0 -COL023_bit0 -COL024_bit0 -COL027_bit0 -COL028_bit0 -COL029_bit0 COL030_bit0 -COL031_bit0 -COL032_bit0 -COL033_bit0 -COL034_bit0 -COL035_bit0 -COL036_bit0 -COL039_bit0 -COL040_bit0 -COL041_bit0 -COL042_bit0 COL043_bit0 -COL044_bit0 -COL045_bit0 COL046_bit0 -COL047_bit0 -COL048_bit0 -COL051_bit0 COL052_bit0 -COL053_bit0 COL054_bit0 -COL055_bit0 COL056_bit0 -COL057_bit0 COL058_bit0 -COL001_bit0 -COL002_bit0 -COL013_bit0 -COL014_bit0 -COL025_bit0 -COL026_bit0 -COL037_bit0 -COL038_bit0 -COL049_bit0 -COL050_bit0 
c Exit Code: 30
c Total time: 1.169 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): 0.86 0.94 0.90 2/55 19081
Raw data (stat): 19081 (runsolver) R 19080 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 842432582 884736 94 4294967295 134512640 135332820 3221224464 3221219644 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+1.19812 s]
Raw data (loadavg): 0.86 0.94 0.90 1/54 19081
Raw data (stat): 19081 (runsolver) R 19080 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 842432582 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0

Child status: 30
Real time (s): 1.19784
CPU time (s): 1.18182
CPU user time (s): 1.12983
CPU system time (s): 0.051992
CPU usage (%): 98.6624
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	1264768
#### END VERIFIER DATA ####