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).
    Note that some very long lines in this section may be truncated by your web browser !
  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

Namesubmitted/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 YES
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 benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark1.36079
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 2393

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-18 19:47:45 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3798 boxname=wulflinc23 idbench=282 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  f1840a9f0b03b6ae7284b9e5be9bb3b7  /oldhome/oroussel/tmp/wulflinc23/normalized-stein27.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc23/normalized-stein27.opb
IDLAUNCH: 3798
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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	: 3
cpu MHz		: 451.037
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:        914040 kB
Buffers:         33188 kB
Cached:          60404 kB
SwapCached:        792 kB
Active:          55228 kB
Inactive:        40968 kB
HighTotal:      131008 kB
HighFree:        67396 kB
LowTotal:       903652 kB
LowFree:        846644 kB
SwapTotal:     2097136 kB
SwapFree:      2095868 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5692 kB
Slab:            18768 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 19:48:06 (client local time) WITH STATUS 30 IN 19.544 SECONDS
stats: 3798 0 19.544 30

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc23/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=19.528

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/13453/stat): 13453 (PBS4) R 13452 13453 5299 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1843903041 978944 2 4294967295 134512640 135450776 3221224576 3221224576 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/13453/statm): 239 2 232 232 0 7 0
[pid=13453] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-stein27.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-stein27.opb

[startup+10.0025 s]
Raw data (loadavg): 0.93 0.96 0.91 1/56 13453
Raw data (/proc/13453/stat): 13453 (PBS4) T 13452 13453 5299 0 -1 0 951 0 0 0 921 27 0 0 25 0 1 0 1843903041 4362240 885 4294967295 134512640 135450776 3221224576 3221223436 135126769 0 0 5 0 3222434794 0 0 17 1 0 0
Raw data (/proc/13453/statm): 1065 885 232 232 0 833 0
[pid=13453] vsize: 4260
Current children cumulated CPU time (s) 9.48
Current children cumulated vsize (Kb) 4260

[startup+20.0032 s]
Raw data (loadavg): 0.94 0.96 0.91 1/56 13453
Raw data (/proc/13453/stat): 13453 (PBS4) T 13452 13453 5299 0 -1 0 1368 0 0 0 1872 45 0 0 25 0 1 0 1843903041 7520256 1205 4294967295 134512640 135450776 3221224576 3221223436 135126769 0 0 5 0 3222434794 0 0 17 0 0 0
Raw data (/proc/13453/statm): 1836 1205 232 232 0 1604 0
[pid=13453] vsize: 7344
Current children cumulated CPU time (s) 19.17
Current children cumulated vsize (Kb) 7344
One traced child (pid=13453) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 20.3775
CPU time (s): 19.544
CPU user time (s): 19.0741
CPU system time (s): 0.469928
CPU usage (%): 95.9097
Max. virtual memory (cumulated for all children) (Kb): 7344

Verifier Data

Verifier:	OK	18