Flexibility.

The Bayanihan framework heavily exploits the object-oriented features of the Java language to provide flexibility in the kinds of systems that can be implemented using it. Implementations of Bayanihan can be varied at three main levels:

1.

Applications. At the highest level, application programmers can write their own data objects and GUIs, and create their own problem objects by putting together appropriate engine, manager, and data pool components chosen from a component library. Given a component library for eager-scheduling, for example, one can write applications for rendering, RC5, and many other applications simply by varying the work data and GUI classes. Within a single application, it is also possible write different user interfaces. For example, different data GUIs may be written to display data in different ways.

2.

Components. Programmers can also write their own engines, managers, and data pools to implement different computation models. This would allow us, for example, to experiment with different forms of adaptive parallelism, or different fault-tolerance mechanisms.

3.

Infrastructure. It is also possible to change other support objects such as the chassis, and the problem table. For example, there may be an application chassis and an applet chassis. Also, different chassis objects may provide different ways to let the user select problems from the problem table. Making changes at this level may allow us to implement different security mechanisms, or address scalability issues.