This example shows how to integrate Intel Threading Building Block and Geant4 to achieve event-level parallelism.

Note that this is a preliminary version which should not be considered a feature-complete example and which presents some limitations (no merging of output, no correct clean-up of heap). It will be substantially improved in 2014.

This example adds to B2b example, originally provided in basic example, the TBB based classes:

tbbMasterRunManager

tbbMasterRunManager class implements the master model run manager for TBB bases application.

It is instantiated by user main (or equivalent function) instead of G4[MT]RunManager. It controls the creation of tbb::tasks. See G4MTRunManager for documentation of methods relative to base class. Only class specific methods are documented here.

tbbWorkerRunManager

tbbWorkerRunManager class implements the worker model run manager for TBB based application.

It is instantiated by tbbUserWorkerInitialization and used by tbbMasterRunManager. See G4WorkerRunManager for documentation of methods relative to base class. Only class specific methods are documented here.

tbbUserWorkerInitialization

tbbUserWorkerInitialization class implements TBB specific worker initialization. It is a sub-class of G4UserWorkerThreadInitialization. Its role is to instantiate a tbbWorkerRunManager to be used by tbb tasks.

tbbTask

tbbTask class represents one TBB task.