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/submitted/een/normalized-stein27.opb
MD5SUMf1840a9f0b03b6ae7284b9e5be9bb3b7
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 18
Optimality of the best value was proved NO
Number of terms in the objective function 27
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 27
Number of bits of the sum of numbers in the objective function 5
Biggest number in a constraint 13
Number of bits of the biggest number in a constraint 4
Biggest sum of numbers in a constraint 40
Number of bits of the biggest sum of numbers6
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02084
Number of variables27
Total number of constraints118
Number of constraints which are clauses117
Number of constraints which are cardinality constraints (but not clauses)1
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint3
Maximum length of a constraint27

Trace number 7939 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc7 THE 2005-04-17 17:40:13 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=5167 boxname=wulflinc7 idbench=398 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  f1840a9f0b03b6ae7284b9e5be9bb3b7  /oldhome/oroussel/tmp/wulflinc7/normalized-stein27.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc7/normalized-stein27.opb
IDLAUNCH: 5167
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.050
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		: 451.050
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:        804024 kB
Buffers:         39272 kB
Cached:         170100 kB
SwapCached:          0 kB
Active:         110116 kB
Inactive:       102100 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        803772 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6932 kB
Slab:            12784 kB
Committed_AS:    63480 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-17 17:40:31 (client local time) WITH STATUS 30 IN 18.2352 SECONDS
stats: 5167 0 18.2352 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc7/normalized-stein27.opb ......
c The optimum solution is:18
s OPTIMUM FOUND
v -x0 -x1 -x10 -x11 x12 -x13 -x14 x15 x16 x17 x18 x19 x2 x20 x21 x22 x23 x24 x25 -x26 x3 -x4 x5 x6 x7 -x8 x9 
c Done, CPU Time=18.2232
#### 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 0.89 2/54 16160
Raw data (stat): 16160 (runsolver) R 16159 22932 22931 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 454170584 1052672 99 4294967295 134512640 135381576 3221224544 3221219792 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+9.99985 s]
Raw data (loadavg): 0.82 0.93 0.90 2/54 16160
Raw data (stat): 16160 (PBS4) R 16159 22932 22931 0 -1 0 1024 0 0 0 993 5 0 0 25 0 1 0 454170584 6705152 971 4294967295 134512640 135450300 3221224640 3221223376 134538443 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 1637 971 231 231 0 1406 0
vsize: 6548
[startup+18.2401 s]
Raw data (loadavg): 0.83 0.93 0.90 1/53 16160
Raw data (stat): 16160 (PBS4) R 16159 22932 22931 0 -1 0 1024 0 0 0 993 5 0 0 25 0 1 0 454170584 6705152 971 4294967295 134512640 135450300 3221224640 3221223376 134538443 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 1637 971 231 231 0 1406 0
vsize: 0

Child status: 30
Real time (s): 18.2395
CPU time (s): 18.2352
CPU user time (s): 18.1402
CPU system time (s): 0.094985
CPU usage (%): 99.9764
Max. virtual memory (Kb): 6548
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	18
#### END VERIFIER DATA ####