Difference between revisions of "RunMode"
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| − | =Specifying Run Modes = | + | =Specifying Run Modes = |
BPmc is activated by specifying the runmode paramater in the run configuration, under VM parameters, as follows: | BPmc is activated by specifying the runmode paramater in the run configuration, under VM parameters, as follows: | ||
== -DrunMode=Det == | == -DrunMode=Det == | ||
| − | Description: “Normal” / standard / deterministic run . | + | * Description: “Normal” / standard / deterministic run. |
| − | Use: when you want the program to “do something”. | + | * 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. | + | * Event Selection: Always the first requested event that is not blocked. |
| − | Backtracking | + | * Backtracking: none. |
| − | + | * Stops: When all b-threads end, or when there are no enabled events. | |
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| − | Stops: When all b-threads end, or when there are no enabled events | + | |
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| − | -DrunMode=MCSafety | + | == -DrunMode=Random == |
| − | Description: A model-checking | + | * Description: One possible run out of many. |
| − | Use: Model checking: explore safety properties (including deadlocks), liveness properties (with fairness assumptions), discover desired paths, etc. | + | * Use: Demonstration or manual exploration of different possible runs. |
| − | + | * Non-determinism specification: Allowed. | |
| − | Event selection: Systematically makes all possible combinations of event selections | + | * Event selection: Random among all non-deterministic choices. |
| − | Backtracking | + | * Backtracking: none. |
| + | * Stops: When all b-threads end, or when there are no enabled events. | ||
| + | * Additional related parameters: -DrandomSeed= nnnn. | ||
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| + | == -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). | ||
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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), liveness properties (with fairness assumptions), 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. | Stops: When counterexample is found, or when verification of all transitions / states is complete. | ||
Additional related parameters: -Dsearch=BFS/DFS, -Drecursive=true/false | Additional related parameters: -Dsearch=BFS/DFS, -Drecursive=true/false | ||
Revision as of 14:12, 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=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=MCSafety
- Description: A model-checking run. Explore all possible executions paths – looking to validate safety properties.
- Use: Model checking: explore safety properties (including deadlocks), liveness properties (with fairness assumptions), 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: explore safety properties (including deadlocks), liveness properties (with fairness assumptions), discover desired paths, etc. Non-determinism specification: Allowed (actually required by definition) of MC. Event selection: Systematically makes all possible combinations of event selections Backtracking/rerun: extensive backtracking as part of exploring the state-graph 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=MCDet Description: A deterministic run, with model-checking instrumentation. No non-determinism. Always pick 1st event -DrunMode=Learning/Training (In development)
