Difference between revisions of "RunMode"
From BP Wiki
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* Backtracking: none. | * Backtracking: none. | ||
* Stops: When all b-threads end, or when there are no enabled events. | * Stops: When all b-threads end, or when there are no enabled events. | ||
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| + | == -DrunMode=MCSafety == | ||
| + | * Description: A model-checking run. Explore all possible executions paths – looking to validate safety properties. | ||
| + | * Use: Model checking: explore safety properties (including deadlocks), discover desired paths, etc. | ||
| + | * Nondeterminism specification: Allowed (actually required by definition). | ||
| + | * Event selection: Systematically makes all possible combinations of event selections | ||
| + | * Backtracking: systematic as part of exploring the state-graph - as described in [[Nondeterminism | section on nondetermism]]. | ||
| + | * Stops: When counterexample is found, or when verification of all transitions / states is complete. | ||
| + | * Additional related parameters: -Dsearch=BFS/DFS, -Drecursive=true/false | ||
| + | |||
| + | == -DrunMode=MCLiveness == | ||
| + | * Description: A model-checking run– explore all execution paths looking to validate liveness properties subject to fairness assumptions. | ||
| + | * Use: Model checking for liveness properties - (with fairness assumptions),. | ||
| + | * Non-determinism specification: Allowed (actually required by definition). | ||
| + | * Event selection: Systematically makes all possible combinations of event selections. | ||
| + | * Backtracking: systematic as part of exploring the state-graph - as described in [[Nondeterminism | section on nondetermism]]. | ||
| + | Stops: When counterexample is found, or when verification of all transitions / states is complete. | ||
| + | * Additional related parameters: Conditional, strong and weak fairness assumptions provided as sets of events | ||
== -DrunMode=Random == | == -DrunMode=Random == | ||
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* Stops: When the last run of all possible runs ends (all possible combinations of event selections exhausted). | * Stops: When the last run of all possible runs ends (all possible combinations of event selections exhausted). | ||
| − | + | == -DrunMode=MCDet == | |
| − | + | Description: A deterministic run, with model-checking instrumentation. No non-determinism. Always pick 1st event that is requested and not blocked. See [[MCInstrumentation | Application Assistance and Instrumentation for BPmc]] | |
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| − | == -DrunMode=MCDet == | + | |
| − | Description: A deterministic run, with model-checking instrumentation. No non-determinism. Always pick 1st event that is requested and not blocked. See [[MCInstrumentation | Application Assistance and Instrumentation for BPmc]] | + | |
| − | == -DrunMode=Learning/Training == | + | == -DrunMode=Learning/Training == |
(In development) | (In development) | ||
Revision as of 14:19, 4 August 2013
Contents
Specifying Run Modes
BPmc is activated by specifying the runmode paramater in the run configuration, under VM parameters, as follows:
-DrunMode=Det
- Description: “Normal” / standard / deterministic run.
- Use: when you want the program to “do something”.
- Nondeterminism specification: Ignored. All priorities are considered distinct.
- Event Selection: Always the first requested event that is not blocked.
- Backtracking: none.
- Stops: When all b-threads end, or when there are no enabled events.
-DrunMode=MCSafety
- Description: A model-checking run. Explore all possible executions paths – looking to validate safety properties.
- Use: Model checking: explore safety properties (including deadlocks), discover desired paths, etc.
- Nondeterminism specification: Allowed (actually required by definition).
- Event selection: Systematically makes all possible combinations of event selections
- Backtracking: systematic as part of exploring the state-graph - as described in section on nondetermism.
- Stops: When counterexample is found, or when verification of all transitions / states is complete.
- Additional related parameters: -Dsearch=BFS/DFS, -Drecursive=true/false
-DrunMode=MCLiveness
- Description: A model-checking run– explore all execution paths looking to validate liveness properties subject to fairness assumptions.
- Use: Model checking for liveness properties - (with fairness assumptions),.
- Non-determinism specification: Allowed (actually required by definition).
- Event selection: Systematically makes all possible combinations of event selections.
- Backtracking: systematic as part of exploring the state-graph - as described in section on nondetermism.
Stops: When counterexample is found, or when verification of all transitions / states is complete.
- Additional related parameters: Conditional, strong and weak fairness assumptions provided as sets of events
-DrunMode=Random
- Description: One possible run out of many.
- Use: Demonstration or manual exploration of different possible runs.
- Non-determinism specification: Allowed.
- Event selection: Random among all non-deterministic choices.
- Backtracking: none.
- Stops: When all b-threads end, or when there are no enabled events.
- Additional related parameters: -DrandomSeed= nnnn.
-DrunMode=Iter
- Description: An iterative run – explore all possible executions.
- Use: to assess traces and results of all possible runs resulting from non-deterministic choices.
- Non-determinism specification: Allowed.
- Event selection: Systematically makes all possible combinations of event selections - in different runs.
- Backtracking: When a run ends , it is restarted , and a new combination of event selections is used - from the beginning - not at the next higher nondeterminstic choice.
- Stops: When the last run of all possible runs ends (all possible combinations of event selections exhausted).
-DrunMode=MCDet
Description: A deterministic run, with model-checking instrumentation. No non-determinism. Always pick 1st event that is requested and not blocked. See Application Assistance and Instrumentation for BPmc
-DrunMode=Learning/Training
(In development)
