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 295

Launcher Data

LAUNCH ON wulflinc13 THE 2005-09-18 09:19:57 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=282 boxname=wulflinc13 idbench=282 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  f1840a9f0b03b6ae7284b9e5be9bb3b7  /oldhome/oroussel/tmp/wulflinc13/normalized-stein27.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc13/normalized-stein27.opb
IDLAUNCH: 282
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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	: 2
cpu MHz		: 451.242
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        948860 kB
Buffers:         33356 kB
Cached:          26184 kB
SwapCached:        708 kB
Active:          53380 kB
Inactive:         8708 kB
HighTotal:      131008 kB
HighFree:       101248 kB
LowTotal:       903652 kB
LowFree:        847612 kB
SwapTotal:     2097136 kB
SwapFree:      2095936 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5740 kB
Slab:            18052 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 09:20:41 (client local time) WITH STATUS 30 IN 37.3033 SECONDS
stats: 282 0 37.3033 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 27 variables and 118 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.056
c After prepocess the problem consists of 27 variables and 118 constraints.
c Initial Lower Bound: 0
c NEW SOLUTION FOUND: 20 @ 0.058 @ #Dec. 20
c NEW SOLUTION FOUND: 19 @ 0.062 @ #Dec. 51
c NEW SOLUTION FOUND: 18 @ 0.066 @ #Dec. 91
c Restart #1 #Var: 27 #Dec: 317 LB: 0 @ 0.131
c Restart #2 #Var: 27 #Dec: 740 LB: 0 @ 0.315
c Restart #3 #Var: 27 #Dec: 1384 LB: 0 @ 0.652
c Restart #4 #Var: 27 #Dec: 2238 LB: 0 @ 1.29
c CHANGE to LPR mode... 	UB: 18	MIS: 0	LPR: 13 (0.021)	Diff: 0
c Restart #0 #Var: 27 #Dec: 3289 LB: 0 @ 2.357
c Restart #1 #Var: 27 #Dec: 3496 LB: 13 @ 5.305
c Restart #2 #Var: 27 #Dec: 3902 LB: 13 @ 10.161
c Restart #3 #Var: 27 #Dec: 4507 LB: 13 @ 18.403
c Restart #4 #Var: 24 #Dec: 5312 LB: 13 @ 31.74
s OPTIMUM FOUND
v x0 -x1 x2 -x3 x4 x5 -x6 -x7 x8 x9 x10 x11 -x12 x13 x14 x15 x16 x17 x18 x19 x20 x21 -x22 x23 -x24 -x25 -x26 
c Cost: 18
c Exit Code: 30
c Total time: 37.288 s

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/2546/stat): 2546 (bsolo) R 2545 2546 1333 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1781916937 438272 3 4294967295 134512640 134736556 3221224576 3221224576 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2546/statm): 107 3 90 68 0 39 0
[pid=2546] vsize: 428
open syscall for file /etc/ld.so.preload
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open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/tmp/wulflinc13/normalized-stein27.opb

[startup+10.0036 s]
Raw data (loadavg): 0.88 0.95 0.90 1/56 2546
Raw data (/proc/2546/stat): 2546 (bsolo) T 2545 2546 1333 0 -1 0 4060 0 0 0 765 73 0 0 19 0 1 0 1781916937 11747328 2164 4294967295 134512640 134736556 3221224576 3221222908 1077781665 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/2546/statm): 2868 2164 1116 68 0 2800 0
[pid=2546] vsize: 11472
Current children cumulated CPU time (s) 8.38
Current children cumulated vsize (Kb) 11472

[startup+20.0043 s]
Raw data (loadavg): 0.90 0.95 0.91 1/56 2546
Raw data (/proc/2546/stat): 2546 (bsolo) T 2545 2546 1333 0 -1 0 6671 0 0 0 1499 147 0 0 17 0 1 0 1781916937 12681216 2390 4294967295 134512640 134736556 3221224576 3221222972 1077781665 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/2546/statm): 3096 2390 1116 68 0 3028 0
[pid=2546] vsize: 12384
Current children cumulated CPU time (s) 16.46
Current children cumulated vsize (Kb) 12384

[startup+30.005 s]
Raw data (loadavg): 0.91 0.95 0.91 1/56 2546
Raw data (/proc/2546/stat): 2546 (bsolo) T 2545 2546 1333 0 -1 0 8977 0 0 0 2256 222 0 0 21 0 1 0 1781916937 13516800 2597 4294967295 134512640 134736556 3221224576 3221222940 1077781665 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/2546/statm): 3300 2597 1116 68 0 3232 0
[pid=2546] vsize: 13200
Current children cumulated CPU time (s) 24.78
Current children cumulated vsize (Kb) 13200

[startup+40.0056 s]
Raw data (loadavg): 0.93 0.96 0.91 1/56 2546
Raw data (/proc/2546/stat): 2546 (bsolo) T 2545 2546 1333 0 -1 0 11016 0 0 0 3041 290 0 0 20 0 1 0 1781916937 14233600 2772 4294967295 134512640 134736556 3221224576 3221222972 1077781665 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/2546/statm): 3475 2772 1116 68 0 3407 0
[pid=2546] vsize: 13900
Current children cumulated CPU time (s) 33.31
Current children cumulated vsize (Kb) 13900
One traced child (pid=2546) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 44.6271
CPU time (s): 37.3033
CPU user time (s): 34.0818
CPU system time (s): 3.22151
CPU usage (%): 83.5889
Max. virtual memory (cumulated for all children) (Kb): 13900

Verifier Data

Verifier:	OK	18