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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-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 benchmark37.6673
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 27972 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc26 THE 2005-05-25 00:12:37 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=14745 boxname=wulflinc26 idbench=1135 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  74f2ccfaf3fc18110d6ed0b0b3cd2342  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-neos8.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-neos8.opb
IDLAUNCH: 14745
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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		: 451.061
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:        782828 kB
Buffers:         29792 kB
Cached:         198100 kB
SwapCached:        656 kB
Active:          65088 kB
Inactive:       165408 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        782576 kB
SwapTotal:     2097892 kB
SwapFree:      2096880 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           6032 kB
Slab:            15692 kB
Committed_AS:    63732 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-25 00:13:31 (client local time) WITH STATUS 0 IN 53.2489 SECONDS
stats: 14745 7 53.2489 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): 0.79 0.92 0.90 2/54 27675
Raw data (stat): 27675 (runsolver) R 27674 20687 20686 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 834471597 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+10.0039 s]
Raw data (loadavg): 0.82 0.92 0.90 2/54 27675
Raw data (stat): 27675 (bsolo_mis) R 27674 20687 20686 0 -1 0 65815 0 0 0 863 136 0 0 25 0 1 0 834471597 283336704 65793 4294967295 134512640 134714540 3221224592 3221222868 1077414358 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 69174 65793 1111 63 0 69111 0
vsize: 276696
[startup+20.011 s]
Raw data (loadavg): 0.85 0.93 0.90 2/54 27675
Raw data (stat): 27675 (bsolo_mis) R 27674 20687 20686 0 -1 0 99425 0 0 0 1801 199 0 0 25 0 1 0 834471597 421224448 99403 4294967295 134512640 134714540 3221224592 3221222868 1077414435 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 102838 99403 1111 63 0 102775 0
vsize: 411352
[startup+30.1135 s]
Raw data (loadavg): 0.87 0.93 0.90 2/54 27675
Raw data (stat): 27675 (bsolo_mis) R 27674 20687 20686 0 -1 0 118824 0 0 0 2778 232 0 0 25 0 1 0 834471597 500641792 118802 4294967295 134512640 134714540 3221224592 3221222868 1077414383 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 122227 118802 1111 63 0 122164 0
vsize: 488908
[startup+40.1131 s]
Raw data (loadavg): 0.89 0.93 0.90 2/54 27675
Raw data (stat): 27675 (bsolo_mis) R 27674 20687 20686 0 -1 0 128732 0 0 0 3761 249 0 0 25 0 1 0 834471597 541339648 128710 4294967295 134512640 134714540 3221224592 3221222896 134566799 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 132163 128710 1111 63 0 132100 0
vsize: 528652
[startup+50.1197 s]
Raw data (loadavg): 0.91 0.93 0.90 2/54 27675
Raw data (stat): 27675 (bsolo_mis) R 27674 20687 20686 0 -1 0 138159 0 0 0 4744 266 0 0 25 0 1 0 834471597 580005888 138137 4294967295 134512640 134714540 3221224592 3221221132 1077090836 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 141603 138137 1111 63 0 141540 0
vsize: 566412
[startup+53.2737 s]
Raw data (loadavg): 0.91 0.93 0.90 1/53 27675
Raw data (stat): 27675 (bsolo_mis) R 27674 20687 20686 0 -1 0 138159 0 0 0 4744 266 0 0 25 0 1 0 834471597 580005888 138137 4294967295 134512640 134714540 3221224592 3221221132 1077090836 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 141603 138137 1111 63 0 141540 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 53.2734
CPU time (s): 53.2489
CPU user time (s): 50.2714
CPU system time (s): 2.97755
CPU usage (%): 99.9541
Max. virtual memory (Kb): 566412
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####