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/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos8.opb
MD5SUM74f2ccfaf3fc18110d6ed0b0b3cd2342
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -3719
Optimality of the best value was proved NO
Number of terms in the objective function 68
Biggest coefficient in the objective function 2700
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 54380
Number of bits of the sum of numbers in the objective function 16
Biggest number in a constraint 2700
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 54380
Number of bits of the biggest sum of numbers16
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark37.5293
Number of variables23264
Total number of constraints69552
Number of constraints which are clauses20804
Number of constraints which are cardinality constraints (but not clauses)23228
Number of constraints which are nor clauses,nor cardinality constraints25520
Minimum length of a constraint1
Maximum length of a constraint2747

Trace number 25241 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-17 22:52:46 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=19750 boxname=wulflinc31 idbench=1520 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  74f2ccfaf3fc18110d6ed0b0b3cd2342  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-neos8.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-neos8.opb
IDLAUNCH: 19750
/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:        770664 kB
Buffers:         32780 kB
Cached:         206328 kB
SwapCached:       2836 kB
Active:         118896 kB
Inactive:       125384 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        770412 kB
SwapTotal:     2097892 kB
SwapFree:      2094220 kB
Dirty:           14664 kB
Writeback:           0 kB
Mapped:           5380 kB
Slab:            14196 kB
Committed_AS:    63860 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-17 22:53:41 (client local time) WITH STATUS 0 IN 53.9198 SECONDS
stats: 19750 7 53.9198 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
#### 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): 0.96 0.98 0.96 2/55 31188
Raw data (stat): 31188 (runsolver) R 31187 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 773479344 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+10.0006 s]
Raw data (loadavg): 0.97 0.98 0.96 2/55 31188
Raw data (stat): 31188 (bsolo_mis) R 31187 7876 7672 0 -1 0 65816 0 0 0 857 139 0 0 25 0 1 0 773479344 283336704 65793 4294967295 134512640 134714540 3221221776 3221220052 1077414338 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 69174 65793 1111 63 0 69111 0
vsize: 276696
[startup+20.0006 s]
Raw data (loadavg): 0.97 0.98 0.96 2/55 31188
Raw data (stat): 31188 (bsolo_mis) R 31187 7876 7672 0 -1 0 99424 0 0 0 1791 205 0 0 25 0 1 0 773479344 421224448 99401 4294967295 134512640 134714540 3221221776 3221220064 134566785 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 102838 99401 1111 63 0 102775 0
vsize: 411352
[startup+30.0011 s]
Raw data (loadavg): 0.97 0.98 0.96 2/55 31188
Raw data (stat): 31188 (bsolo_mis) R 31187 7876 7672 0 -1 0 118732 0 0 0 2756 240 0 0 25 0 1 0 773479344 500359168 118709 4294967295 134512640 134714540 3221221776 3221220060 1077399562 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 122158 118710 1111 63 0 122095 0
vsize: 488632
[startup+40.0012 s]
Raw data (loadavg): 0.98 0.98 0.96 2/55 31188
Raw data (stat): 31188 (bsolo_mis) R 31187 7876 7672 0 -1 0 128418 0 0 0 3739 257 0 0 25 0 1 0 773479344 540028928 128395 4294967295 134512640 134714540 3221221776 3221220052 1077414358 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 131843 128395 1111 63 0 131780 0
vsize: 527372
[startup+50.0024 s]
Raw data (loadavg): 0.98 0.98 0.96 2/55 31188
Raw data (stat): 31188 (bsolo_mis) R 31187 7876 7672 0 -1 0 137475 0 0 0 4721 274 0 0 25 0 1 0 773479344 577183744 137452 4294967295 134512640 134714540 3221221776 3221218396 1077253766 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 140914 137452 1111 63 0 140851 0
vsize: 563656
[startup+53.9598 s]
Raw data (loadavg): 0.98 0.98 0.96 1/54 31188
Raw data (stat): 31188 (bsolo_mis) R 31187 7876 7672 0 -1 0 137475 0 0 0 4721 274 0 0 25 0 1 0 773479344 577183744 137452 4294967295 134512640 134714540 3221221776 3221218396 1077253766 0 0 1 0 0 0 0 17 1 0 0
Raw data (statm): 140914 137452 1111 63 0 140851 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 53.9592
CPU time (s): 53.9198
CPU user time (s): 50.8583
CPU system time (s): 3.06153
CPU usage (%): 99.927
Max. virtual memory (Kb): 563656
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####