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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-boeing2.opb
MD5SUM9d4981de84e8fd488c4493c292301fa3
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 3114
Biggest coefficient in the objective function 40265318400000
Number of bits for the biggest coefficient in the objective function 46
Sum of the numbers in the objective function 2533036563346675
Number of bits of the sum of numbers in the objective function 52
Biggest number in a constraint 431563682611200
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 17042207919312540
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.033994
Number of variables3371
Total number of constraints213
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints213
Minimum length of a constraint12
Maximum length of a constraint2370

Trace number 23090 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-04-22 04:33:07 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=10588 boxname=wulflinc4 idbench=815 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  9d4981de84e8fd488c4493c292301fa3  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-boeing2.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-boeing2.opb
IDLAUNCH: 10588
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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:        594684 kB
Buffers:         23332 kB
Cached:         396000 kB
SwapCached:        364 kB
Active:         126376 kB
Inactive:       295096 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        594432 kB
SwapTotal:     2097136 kB
SwapFree:      2096008 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5728 kB
Slab:            12808 kB
Committed_AS:    71784 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-22 04:33:07 (client local time) WITH STATUS 20 IN 0.033994 SECONDS
stats: 10588 7 0.033994 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-boeing2.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.006999
#### 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): 1.07 1.01 0.94 2/54 24306
Raw data (stat): 24306 (runsolver) R 24305 5897 5896 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 492643978 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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+0.03844 s]
Raw data (loadavg): 1.07 1.01 0.94 1/53 24306
Raw data (stat): 24306 (runsolver) R 24305 5897 5896 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 492643978 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 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): 0.038146
CPU time (s): 0.033994
CPU user time (s): 0.022996
CPU system time (s): 0.010998
CPU usage (%): 89.1155
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####