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 40108 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc2 THE 2005-06-08 02:45:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=28179 boxname=wulflinc2 idbench=1135 idsolver=20 numberseed=0
MD5SUM SOLVER: f6aa7fb267fa9710116626be7e6d3048  /oldhome/oroussel/solvers/bsolo_lpr-v2
MD5SUM BENCH:  74f2ccfaf3fc18110d6ed0b0b3cd2342  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-neos8.opb
REAL COMMAND:  bsolo_lpr-v2 /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-neos8.opb
IDLAUNCH: 28179
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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	: 2
cpu MHz		: 451.191
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:        639572 kB
Buffers:         24820 kB
Cached:         347244 kB
SwapCached:       1392 kB
Active:          31020 kB
Inactive:       343100 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        639320 kB
SwapTotal:     2097136 kB
SwapFree:      2094692 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           4984 kB
Slab:            15172 kB
Committed_AS:    71788 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-08 02:46:21 (client local time) WITH STATUS 0 IN 53.1549 SECONDS
stats: 28179 7 53.1549 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
#### 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
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.81 0.93 0.90 2/54 3516
Raw data (stat): 3516 (runsolver) R 3515 31399 31398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 898140727 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0009 s]
Raw data (loadavg): 0.84 0.93 0.90 2/54 3516
Raw data (stat): 3516 (bsolo_lpr-v2) R 3515 31399 31398 0 -1 0 65971 0 0 0 860 137 0 0 25 0 1 0 898140727 283430912 65891 4294967295 134512640 134716908 3221224576 3221222852 1077414395 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 69197 65891 1111 63 0 69134 0
vsize: 276788
[startup+20.0006 s]
Raw data (loadavg): 0.86 0.93 0.90 2/54 3516
Raw data (stat): 3516 (bsolo_lpr-v2) R 3515 31399 31398 0 -1 0 99584 0 0 0 1798 200 0 0 25 0 1 0 898140727 421318656 99504 4294967295 134512640 134716908 3221224576 3221222852 1077414351 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 102861 99504 1111 63 0 102798 0
vsize: 411444
[startup+30.0002 s]
Raw data (loadavg): 0.88 0.93 0.90 2/54 3516
Raw data (stat): 3516 (bsolo_lpr-v2) R 3515 31399 31398 0 -1 0 118986 0 0 0 2760 238 0 0 25 0 1 0 898140727 500854784 118906 4294967295 134512640 134716908 3221224576 3221222852 1077414435 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 122279 118906 1111 63 0 122216 0
vsize: 489116
[startup+40.001 s]
Raw data (loadavg): 0.90 0.93 0.90 2/54 3516
Raw data (stat): 3516 (bsolo_lpr-v2) R 3515 31399 31398 0 -1 0 128889 0 0 0 3745 253 0 0 25 0 1 0 898140727 541433856 128809 4294967295 134512640 134716908 3221224576 3221222860 1077399562 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 132186 128809 1111 63 0 132123 0
vsize: 528744
[startup+50.0007 s]
Raw data (loadavg): 0.92 0.93 0.90 2/54 3516
Raw data (stat): 3516 (bsolo_lpr-v2) R 3515 31399 31398 0 -1 0 138322 0 0 0 4726 272 0 0 25 0 1 0 898140727 580104192 138242 4294967295 134512640 134716908 3221224576 3221221052 1077191702 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 141627 138242 1111 63 0 141564 0
vsize: 566508
[startup+53.1625 s]
Raw data (loadavg): 0.92 0.94 0.90 1/53 3516
Raw data (stat): 3516 (bsolo_lpr-v2) R 3515 31399 31398 0 -1 0 138322 0 0 0 4726 272 0 0 25 0 1 0 898140727 580104192 138242 4294967295 134512640 134716908 3221224576 3221221052 1077191702 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 141627 138242 1111 63 0 141564 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 53.1623
CPU time (s): 53.1549
CPU user time (s): 50.1324
CPU system time (s): 3.02254
CPU usage (%): 99.9861
Max. virtual memory (Kb): 566508
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####