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 27430 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc27 THE 2005-05-24 22:03:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=16942 boxname=wulflinc27 idbench=1304 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  5128a094f3f47af1a66bc4eb5109f150  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-misc02.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-13-7-misc02.opb
IDLAUNCH: 16942
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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		: 451.169
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:        858044 kB
Buffers:         12060 kB
Cached:         143156 kB
SwapCached:        640 kB
Active:          37432 kB
Inactive:       120236 kB
HighTotal:      131008 kB
HighFree:         1260 kB
LowTotal:       903652 kB
LowFree:        856784 kB
SwapTotal:     2097892 kB
SwapFree:      2096760 kB
Dirty:              48 kB
Writeback:           0 kB
Mapped:           5644 kB
Slab:            13284 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 22:03:10 (client local time) WITH STATUS 30 IN 0.274957 SECONDS
stats: 16942 0 0.274957 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Initial problem consists of 79 variables and 53 constraints.
c After prepocess the problem consists of 72 variables and 53 constraints.
c preprocess terminated 0.068 s
c Initial Lower Bound: 1048576
c Lower Bound Elapsed time: 0
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 1409408 @ 0.092
c NEW SOLUTION FOUND: 1399808 @ 0.092
c NEW SOLUTION FOUND: 1390208 @ 0.093
c NEW SOLUTION FOUND: 1381248 @ 0.098
c NEW SOLUTION FOUND: 1369088 @ 0.102
c NEW SOLUTION FOUND: 1331328 @ 0.103
c NEW SOLUTION FOUND: 1325568 @ 0.129
c NEW SOLUTION FOUND: 1276288 @ 0.13
c NEW SOLUTION FOUND: 1264768 @ 0.167
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: 0.267 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): 0.63 0.88 0.88 2/54 8642
Raw data (stat): 8642 (runsolver) R 8641 3394 3393 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833682673 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.284784 s]
Raw data (loadavg): 0.63 0.88 0.88 1/53 8642
Raw data (stat): 8642 (runsolver) R 8641 3394 3393 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 833682673 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 30
Real time (s): 0.284494
CPU time (s): 0.274957
CPU user time (s): 0.25696
CPU system time (s): 0.017997
CPU usage (%): 96.6477
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	1264768
#### END VERIFIER DATA ####