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-markshare1_1.opb
MD5SUMf88781e3d6e9a5487d13eaa213c27b55
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 4272
Optimality of the best value was proved NO
Number of terms in the objective function 120
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 6291450
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 524288
Number of bits of the biggest number in a constraint 20
Biggest sum of numbers in a constraint 6291450
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1175.08
Number of variables205
Total number of constraints56
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)45
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint1
Maximum length of a constraint105

Trace number 17500 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc29 THE 2005-04-21 10:39:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=19480 boxname=wulflinc29 idbench=1499 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  f88781e3d6e9a5487d13eaa213c27b55  /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-13-7-markshare1_1.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-13-7-markshare1_1.opb
IDLAUNCH: 19480
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.020
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		: 451.020
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:        785212 kB
Buffers:         20152 kB
Cached:         202280 kB
SwapCached:       1968 kB
Active:          44156 kB
Inactive:       181952 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        784960 kB
SwapTotal:     2097892 kB
SwapFree:      2095196 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5296 kB
Slab:            17688 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 10:39:29 (client local time) WITH STATUS 0 IN 0.040993 SECONDS
stats: 19480 7 0.040993 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-13-7-markshare1_1.opb ......
*** glibc detected *** corrupted double-linked list: 0x08140428 ***
#### 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 0.97 0.93 2/54 29569
Raw data (stat): 29569 (runsolver) R 29568 27222 27221 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 544424247 1052672 99 4294967295 134512640 135381576 3221224512 3221219760 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+0.044363 s]
Raw data (loadavg): 0.96 0.97 0.93 1/53 29569
Raw data (stat): 29569 (runsolver) R 29568 27222 27221 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 544424247 1052672 99 4294967295 134512640 135381576 3221224512 3221219760 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 ended because it received signal 11 (SIGSEGV)
Real time (s): 0.044126
CPU time (s): 0.040993
CPU user time (s): 0.034994
CPU system time (s): 0.005999
CPU usage (%): 92.8999
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####