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-harp2.opb
MD5SUMede9b90804f45c5dc7aa110230ebb14b
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -61747740
Optimality of the best value was proved NO
Number of terms in the objective function 2993
Biggest coefficient in the objective function 17006200
Number of bits for the biggest coefficient in the objective function 25
Sum of the numbers in the objective function 4415092451
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 4208540000
Number of bits of the biggest number in a constraint 32
Biggest sum of numbers in a constraint 46909379837
Number of bits of the biggest sum of numbers36
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1288.69
Number of variables2993
Total number of constraints3105
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)3066
Number of constraints which are nor clauses,nor cardinality constraints39
Minimum length of a constraint1
Maximum length of a constraint73

Trace number 26372 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc30 THE 2005-05-24 15:38:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13456 boxname=wulflinc30 idbench=1036 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  ede9b90804f45c5dc7aa110230ebb14b  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-harp2.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-harp2.opb
IDLAUNCH: 13456
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        515864 kB
Buffers:         34256 kB
Cached:         452788 kB
SwapCached:        448 kB
Active:          19460 kB
Inactive:       470436 kB
HighTotal:      131008 kB
HighFree:        65184 kB
LowTotal:       903652 kB
LowFree:        450680 kB
SwapTotal:     2097892 kB
SwapFree:      2097356 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:           6276 kB
Slab:            23400 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 15:38:57 (client local time) WITH STATUS 20 IN 2.67459 SECONDS
stats: 13456 7 2.67459 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 2993 variables and 168 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 2.63 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): 0.93 0.98 1.05 2/54 22920
Raw data (stat): 22920 (runsolver) R 22919 22056 22055 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 831377424 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+2.88943 s]
Raw data (loadavg): 0.93 0.98 1.05 1/53 22920
Raw data (stat): 22920 (runsolver) R 22919 22056 22055 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 831377424 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 20
Real time (s): 2.88919
CPU time (s): 2.67459
CPU user time (s): 2.17167
CPU system time (s): 0.502923
CPU usage (%): 92.5724
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####