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-pipex.opb
MD5SUMb9c1029cc1d97a8d60e984f96f5d3267
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 788263
Optimality of the best value was proved NO
Number of terms in the objective function 48
Biggest coefficient in the objective function 107865
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 2514082
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 107865
Number of bits of the biggest number in a constraint 17
Biggest sum of numbers in a constraint 2514082
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02684
Number of variables48
Total number of constraints73
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint1
Maximum length of a constraint16

Trace number 25850 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-22 23:28:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=17187 boxname=wulflinc31 idbench=1323 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  b9c1029cc1d97a8d60e984f96f5d3267  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-pipex.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-pipex.opb
IDLAUNCH: 17187
/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:        847380 kB
Buffers:         30368 kB
Cached:         137248 kB
SwapCached:       1024 kB
Active:         104952 kB
Inactive:        64784 kB
HighTotal:      131008 kB
HighFree:         4620 kB
LowTotal:       903652 kB
LowFree:        842760 kB
SwapTotal:     2097892 kB
SwapFree:      2095884 kB
Dirty:              60 kB
Writeback:           0 kB
Mapped:           5096 kB
Slab:            11940 kB
Committed_AS:    63844 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-22 23:29:25 (client local time) WITH STATUS 30 IN 58.1262 SECONDS
stats: 17187 0 58.1262 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 48 variables and 41 constraints.
c After prepocess the problem consists of 48 variables and 41 constraints.
c preprocess terminated 0.059 s
c Initial Lower Bound: 773839
c Lower Bound Elapsed time: 0.008
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 860146 @ 0.316
c NEW SOLUTION FOUND: 839325 @ 0.747
c NEW SOLUTION FOUND: 836685 @ 0.751
c NEW SOLUTION FOUND: 835008 @ 0.85
c NEW SOLUTION FOUND: 827319 @ 1.392
c NEW SOLUTION FOUND: 819381 @ 8.145
c NEW SOLUTION FOUND: 804391 @ 11.016
c NEW SOLUTION FOUND: 801381 @ 38.436
c NEW SOLUTION FOUND: 794954 @ 48.109
c NEW SOLUTION FOUND: 790836 @ 57.302
s OPTIMUM FOUND
v QUAN0101_bit0 QUAN0102_bit0 -QUAN0103_bit0 -QUAN0104_bit0 -QUAN0105_bit0 -QUAN0106_bit0 -QUAN0107_bit0 -QUAN0108_bit0 QUAN0109_bit0 -QUAN0110_bit0 -QUAN0111_bit0 -QUAN0112_bit0 -QUAN0113_bit0 QUAN0114_bit0 -QUAN0115_bit0 -QUAN0116_bit0 -QUAN0201_bit0 -QUAN0202_bit0 -QUAN0203_bit0 -QUAN0204_bit0 -QUAN0205_bit0 -QUAN0206_bit0 QUAN0207_bit0 QUAN0208_bit0 -QUAN0209_bit0 -QUAN0210_bit0 -QUAN0211_bit0 QUAN0212_bit0 QUAN0213_bit0 -QUAN0214_bit0 QUAN0215_bit0 QUAN0216_bit0 -QUAN0301_bit0 -QUAN0302_bit0 QUAN0303_bit0 QUAN0304_bit0 QUAN0305_bit0 QUAN0306_bit0 -QUAN0307_bit0 -QUAN0308_bit0 -QUAN0309_bit0 QUAN0310_bit0 QUAN0311_bit0 -QUAN0312_bit0 -QUAN0313_bit0 -QUAN0314_bit0 -QUAN0315_bit0 -QUAN0316_bit0 
c Exit Code: 30
c Total time: 58.106 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): 0.89 0.93 0.90 2/55 31237
Raw data (stat): 31237 (runsolver) R 31236 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 816898287 1056768 100 4294967295 134512640 135381576 3221221680 3221216900 135158418 0 2147483391 1 90112 0 0 0 17 0 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+10.0003 s]
Raw data (loadavg): 0.91 0.93 0.90 2/55 31237
Raw data (stat): 31237 (bsolo_lpr) R 31236 7876 7672 0 -1 0 5172 0 0 0 966 28 0 0 25 0 1 0 816898287 8486912 1336 4294967295 134512640 134714508 3221221776 3221218152 1075112518 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 2072 1336 1111 63 0 2009 0
vsize: 8288
[startup+20.0013 s]
Raw data (loadavg): 0.92 0.93 0.91 2/55 31237
Raw data (stat): 31237 (bsolo_lpr) R 31236 7876 7672 0 -1 0 10297 0 0 0 1943 52 0 0 25 0 1 0 816898287 9580544 1576 4294967295 134512640 134714508 3221221776 3221218096 1075169457 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2339 1576 1111 63 0 2276 0
vsize: 9356
[startup+30.0026 s]
Raw data (loadavg): 0.93 0.93 0.91 2/55 31237
Raw data (stat): 31237 (bsolo_lpr) R 31236 7876 7672 0 -1 0 31411 0 0 0 2897 98 0 0 25 0 1 0 816898287 10366976 1768 4294967295 134512640 134714508 3221221776 3221218004 1075115136 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2531 1768 1111 63 0 2468 0
vsize: 10124
[startup+40.0022 s]
Raw data (loadavg): 0.94 0.93 0.91 2/55 31237
Raw data (stat): 31237 (bsolo_lpr) R 31236 7876 7672 0 -1 0 48145 0 0 0 3857 138 0 0 25 0 1 0 816898287 11022336 1929 4294967295 134512640 134714508 3221221776 3221217952 1074882604 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 2691 1929 1111 63 0 2628 0
vsize: 10764
[startup+50.003 s]
Raw data (loadavg): 0.95 0.94 0.91 2/55 31237
Raw data (stat): 31237 (bsolo_lpr) R 31236 7876 7672 0 -1 0 67034 0 0 0 4809 186 0 0 25 0 1 0 816898287 11251712 2058 4294967295 134512640 134714508 3221221776 3221220592 134622468 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2747 2058 1111 63 0 2684 0
vsize: 10988
[startup+58.1716 s]
Raw data (loadavg): 0.96 0.94 0.91 1/54 31237
Raw data (stat): 31237 (bsolo_lpr) R 31236 7876 7672 0 -1 0 67034 0 0 0 4809 186 0 0 25 0 1 0 816898287 11251712 2058 4294967295 134512640 134714508 3221221776 3221220592 134622468 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 2747 2058 1111 63 0 2684 0
vsize: 0

Child status: 30
Real time (s): 58.171
CPU time (s): 58.1262
CPU user time (s): 55.8655
CPU system time (s): 2.26066
CPU usage (%): 99.9229
Max. virtual memory (Kb): 10988
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	790836
#### END VERIFIER DATA ####