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/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-ship04l.opb
MD5SUM96cffa4027013d4e1e663a2c8e2c78bc
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 42360
Biggest coefficient in the objective function 1930952704000
Number of bits for the biggest coefficient in the objective function 41
Sum of the numbers in the objective function 425698145420625
Number of bits of the sum of numbers in the objective function 49
Biggest number in a constraint 1930952704000
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 425698145420625
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.365943
Number of variables42360
Total number of constraints352
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 constraints352
Minimum length of a constraint20
Maximum length of a constraint1680

Trace number 19413 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc18 THE 2005-04-21 19:18:20 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=16399 boxname=wulflinc18 idbench=1262 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  96cffa4027013d4e1e663a2c8e2c78bc  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-ship04l.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-ship04l.opb
IDLAUNCH: 16399
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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		: 451.177
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:        803692 kB
Buffers:         16344 kB
Cached:         191176 kB
SwapCached:        764 kB
Active:          69404 kB
Inactive:       140072 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        803440 kB
SwapTotal:     2097892 kB
SwapFree:      2096152 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5100 kB
Slab:            15792 kB
Committed_AS:    63816 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 19:18:21 (client local time) WITH STATUS 20 IN 0.365943 SECONDS
stats: 16399 7 0.365943 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-ship04l.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.130981
#### 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): 0.69 0.92 0.92 2/55 5126
Raw data (stat): 5126 (runsolver) R 5125 20024 20023 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 547532041 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+0.370276 s]
Raw data (loadavg): 0.69 0.92 0.92 1/54 5126
Raw data (stat): 5126 (runsolver) R 5125 20024 20023 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 547532041 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): 0.369975
CPU time (s): 0.365943
CPU user time (s): 0.286956
CPU system time (s): 0.078987
CPU usage (%): 98.9102
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####