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/miplib2003/normalized-mps-v2-20-10-markshare2.opb
MD5SUMc00b2eef1eabd5880b83093b756a5dd4
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 429056
Optimality of the best value was proved NO
Number of terms in the objective function 210
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 7516192761
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 536870912
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 7516192761
Number of bits of the biggest sum of numbers33
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1201.34
Number of variables270
Total number of constraints67
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)60
Number of constraints which are nor clauses,nor cardinality constraints7
Minimum length of a constraint1
Maximum length of a constraint90

Trace number 28438 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc29 THE 2005-05-25 02:39:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=12652 boxname=wulflinc29 idbench=974 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  c00b2eef1eabd5880b83093b756a5dd4  /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-markshare2.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-markshare2.opb
IDLAUNCH: 12652
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.020
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		: 451.020
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:        751664 kB
Buffers:         18680 kB
Cached:         237856 kB
SwapCached:        572 kB
Active:          20712 kB
Inactive:       241388 kB
HighTotal:      131008 kB
HighFree:        99204 kB
LowTotal:       903652 kB
LowFree:        652460 kB
SwapTotal:     2097892 kB
SwapFree:      2096728 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5608 kB
Slab:            15100 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-25 02:39:10 (client local time) WITH STATUS 20 IN 0.100984 SECONDS
stats: 12652 7 0.100984 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Initial problem consists of 270 variables and 14 constraints.
c After prepocess the problem consists of 207 variables and 14 constraints.
c preprocess terminated 0.089 s
c Initial Lower Bound: 0
c Lower Bound Elapsed time: 0
c Use computed LB before first solution.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 0.091 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): 0.86 0.95 0.94 2/54 26738
Raw data (stat): 26738 (runsolver) R 26737 20001 20000 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 835339902 1052672 99 4294967295 134512640 135381576 3221224480 3221219696 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+0.142364 s]
Raw data (loadavg): 0.86 0.95 0.94 1/53 26738
Raw data (stat): 26738 (runsolver) R 26737 20001 20000 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 835339902 1052672 99 4294967295 134512640 135381576 3221224480 3221219696 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: 20
Real time (s): 0.136711
CPU time (s): 0.100984
CPU user time (s): 0.083987
CPU system time (s): 0.016997
CPU usage (%): 73.8668
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####