6:43 a.m.
I wrote a program in Drools. But it does not do anything. As the logs show,
the solver finishes in 2 ms and the 'best solution' is an untouched version
of the initial state.
I also noted that not a single movefactory object was created. And at 500
moves/sec and 2 milliseconds of execution, only one move was attempted.
Where do I start troubleshooting?
SudokuGenerator sg = new SudokuGenerator();
Solution sudoku = sg.createSudoku();
Solver solver = createSolver();
solver.setPlanningProblem(sudoku);
solver.solve();
System.out.println("solver over");
Sudoku result = (Sudoku) solver.getBestSolution();
result.displaySolution(); //a method that prints the state of the solution
*Output logs in TRACE mode*
jesvin@Jesvin-Technovia:~/dev/drools/sudoku$ java in.co.technovia.sudoku.App
2012-01-30 17:23:33,795 [main] INFO Solver started: time spend (1), score
(0), new best score (0), random seed (0).
2012-01-30 17:23:33,796 [main] INFO Solved: time spend (2), best score (0),
average calculate count per second (500).
*Contents of the solver XML*
<?xml version="1.0" encoding="UTF-8"?>
<solver>
<environmentMode>DEBUG</environmentMode>
<solutionClass>in.co.technovia.sudoku.domain.Sudoku</solutionClass>
<planningEntityClass>in.co.technovia.sudoku.domain.Digit</planningEntityClass>
<scoreDrl>/score.drl</scoreDrl>
<scoreDefinition>
<scoreDefinitionType>SIMPLE</scoreDefinitionType>
</scoreDefinition>
<termination>
<scoreAttained>0</scoreAttained>
</termination>
<constructionHeuristic>
<constructionHeuristicType>FIRST_FIT</constructionHeuristicType>
</constructionHeuristic>
<localSearch>
<selector>
<moveFactoryClass>in.co.technovia.sudoku.solution.RowChangeMoveFactory</moveFactoryClass>
</selector>
<acceptor>
<completeSolutionTabuSize>1000</completeSolutionTabuSize>
</acceptor>
<forager>
</forager>
</localSearch>
</solver>
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6:49 a.m.
That's weird:
If there are no solver phases configured, it fails-fast,
yet it doesn't log any solver phase messages.
Logging has improved for 5.4.0.Beta1, try upgrading to that
and put the logging level to trace for org.drools.planner.
Alternatively, put a breakpoint in a method in
DefaultLocalSearchSolverPhase.
Op 30-01-12 13:43, aitchnyu schreef:
I wrote a program in Drools. But it does not do anything. As the logs
show,
the solver finishes in 2 ms and the 'best solution' is an untouched version
of the initial state.
I also noted that not a single movefactory object was created. And at 500
moves/sec and 2 milliseconds of execution, only one move was attempted.
Where do I start troubleshooting?
SudokuGenerator sg = new SudokuGenerator();
Solution sudoku = sg.createSudoku();
Solver solver = createSolver();
solver.setPlanningProblem(sudoku);
solver.solve();
System.out.println("solver over");
Sudoku result = (Sudoku) solver.getBestSolution();
result.displaySolution(); //a method that prints the state of the solution
*Output logs in TRACE mode*
jesvin@Jesvin-Technovia:~/dev/drools/sudoku$ java in.co.technovia.sudoku.App
2012-01-30 17:23:33,795 [main] INFO Solver started: time spend (1), score
(0), new best score (0), random seed (0).
2012-01-30 17:23:33,796 [main] INFO Solved: time spend (2), best score (0),
average calculate count per second (500).
*Contents of the solver XML*
<?xml version="1.0" encoding="UTF-8"?>
<solver>
<environmentMode>DEBUG</environmentMode>
<solutionClass>in.co.technovia.sudoku.domain.Sudoku</solutionClass>
<planningEntityClass>in.co.technovia.sudoku.domain.Digit</planningEntityClass>
<scoreDrl>/score.drl</scoreDrl>
<scoreDefinition>
<scoreDefinitionType>SIMPLE</scoreDefinitionType>
</scoreDefinition>
<termination>
<scoreAttained>0</scoreAttained>
</termination>
<constructionHeuristic>
<constructionHeuristicType>FIRST_FIT</constructionHeuristicType>
</constructionHeuristic>
<localSearch>
<selector>
<moveFactoryClass>in.co.technovia.sudoku.solution.RowChangeMoveFactory</moveFactoryClass>
</selector>
<acceptor>
<completeSolutionTabuSize>1000</completeSolutionTabuSize>
</acceptor>
<forager>
</forager>
</localSearch>
</solver>
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With kind regards,
Geoffrey De Smet
7:19 a.m.
I upgraded the binaries (and sources) to 5.4 . Here is the new logs. I noted
that the clone operation is called once. But not a single move factory
instance is created.
Clone -- this displays the entire stuff when a clone is called
Digit:1 (Row 1,Column 1) block code[5]
Digit:2 (Row n/a,Column 1) block code[n/a]
...and more
18:45:18.066 [main] INFO o.d.p.core.solver.DefaultSolver - Solver started:
time spend (8), score (0), new best score (0), random seed (0).
18:45:18.068 [main] INFO o.d.p.core.solver.DefaultSolver - Solved: time
spend (12), best score (0), average calculate count per second (83).
solver over
--the solution displayed
Digit:1 (Row 1,Column 1) block code[5]
Digit:2 (Row n/a,Column 1) block code[n/a]
...
ge0ffrey wrote
That's weird:
If there are no solver phases configured, it fails-fast,
yet it doesn't log any solver phase messages.
Logging has improved for 5.4.0.Beta1, try upgrading to that
and put the logging level to trace for org.drools.planner.
Alternatively, put a breakpoint in a method in
DefaultLocalSearchSolverPhase.
Op 30-01-12 13:43, aitchnyu schreef:
> I wrote a program in Drools. But it does not do anything. As the logs
> show,
> the solver finishes in 2 ms and the 'best solution' is an untouched
> version
> of the initial state.
>
> I also noted that not a single movefactory object was created. And at 500
> moves/sec and 2 milliseconds of execution, only one move was attempted.
>
> Where do I start troubleshooting?
>
> SudokuGenerator sg = new SudokuGenerator();
> Solution sudoku = sg.createSudoku();
> Solver solver = createSolver();
> solver.setPlanningProblem(sudoku);
> solver.solve();
> System.out.println("solver over");
> Sudoku result = (Sudoku) solver.getBestSolution();
> result.displaySolution(); //a method that prints the state of the
> solution
>
> *Output logs in TRACE mode*
>
> jesvin@Jesvin-Technovia:~/dev/drools/sudoku$ java
> in.co.technovia.sudoku.App
> 2012-01-30 17:23:33,795 [main] INFO Solver started: time spend (1),
> score
> (0), new best score (0), random seed (0).
> 2012-01-30 17:23:33,796 [main] INFO Solved: time spend (2), best score
> (0),
> average calculate count per second (500).
>
>
> *Contents of the solver XML*
>
> <?xml version="1.0" encoding="UTF-8"?>
> <solver>
> <environmentMode>DEBUG</environmentMode>
>
> <solutionClass>in.co.technovia.sudoku.domain.Sudoku</solutionClass>
>
>
<planningEntityClass>in.co.technovia.sudoku.domain.Digit</planningEntityClass>
> <scoreDrl>/score.drl</scoreDrl>
> <scoreDefinition>
> <scoreDefinitionType>SIMPLE</scoreDefinitionType>
> </scoreDefinition>
>
> <termination>
> <scoreAttained>0</scoreAttained>
> </termination>
>
> <constructionHeuristic>
> <constructionHeuristicType>FIRST_FIT</constructionHeuristicType>
>
> </constructionHeuristic>
> <localSearch>
> <selector>
>
>
>
<moveFactoryClass>in.co.technovia.sudoku.solution.RowChangeMoveFactory</moveFactoryClass>
> </selector>
> <acceptor>
> <completeSolutionTabuSize>1000</completeSolutionTabuSize>
> </acceptor>
> <forager>
>
> </forager>
> </localSearch>
> </solver>
>
>
> --
> View this message in context:
>
http://drools.46999.n3.nabble.com/How-to-troubleshoot-Drools-planner-doin...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users@.jboss
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
With kind regards,
Geoffrey De Smet
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aitchnyu -
Geoffrey De Smet