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-p0033.opb
MD5SUMaadd007771d1c99eca3f8fae045a6c02
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3089
Optimality of the best value was proved YES
Number of terms in the objective function 33
Biggest coefficient in the objective function 517
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 7276
Number of bits of the sum of numbers in the objective function 13
Biggest number in a constraint 1656
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 7276
Number of bits of the biggest sum of numbers13
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.070989
Number of variables33
Total number of constraints15
Number of constraints which are clauses1
Number of constraints which are cardinality constraints (but not clauses)3
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint2
Maximum length of a constraint19

Trace number 283

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-18 09:14:17 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=275 boxname=wulflinc30 idbench=275 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  aadd007771d1c99eca3f8fae045a6c02  /oldhome/oroussel/tmp/wulflinc30/normalized-p0033.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc30/normalized-p0033.opb
IDLAUNCH: 275
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        944420 kB
Buffers:         36472 kB
Cached:          23804 kB
SwapCached:        788 kB
Active:          52476 kB
Inactive:        10424 kB
HighTotal:      131008 kB
HighFree:       106456 kB
LowTotal:       903652 kB
LowFree:        837964 kB
SwapTotal:     2097892 kB
SwapFree:      2096636 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            21700 kB
Committed_AS:    64172 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 09:14:18 (client local time) WITH STATUS 30 IN 0.319951 SECONDS
stats: 275 0 0.319951 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 33 variables and 15 constraints.
c	preprocess terminated. Elapsed time: 0.036
c After prepocess the problem consists of 32 variables and 15 constraints.
c Initial Lower Bound: 0
c NEW SOLUTION FOUND: 3347 @ 0.051 @ #Dec. 64
c NEW SOLUTION FOUND: 3188 @ 0.055 @ #Dec. 73
c NEW SOLUTION FOUND: 3089 @ 0.071 @ #Dec. 119
c Restart #1 #Var: 32 #Dec: 346 LB: 0 @ 0.156
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 x27 x28 x29 -x30 -x31 -x32 
c Cost: 3089
c Exit Code: 30
c Total time: 0.31 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/6543/stat): 6543 (bsolo) R 6542 6543 5245 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1840078549 438272 3 4294967295 134512640 134736556 3221224576 3221224576 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6543/statm): 107 3 90 68 0 39 0
[pid=6543] vsize: 428
open syscall for file /etc/ld.so.preload
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One traced child (pid=6543) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.398792
CPU time (s): 0.319951
CPU user time (s): 0.281957
CPU system time (s): 0.037994
CPU usage (%): 80.23
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	3089