Models for computational steering

This paper describes a conceptual model for computational program steering. By exploiting previous results attained in program monitoring, debugging, and connguration, the abstractions and mechanisms derived from this model are shown suitable for both algorithmic and human interactive steering. A characterization of existing systems for computational steering using the model's abstractions demonstrate such generality. The model is illustrated through its use for steering a large-scale scientiic code. Mechanisms for computational steering derived from the model are presented that include sensors, probes, and actuators.