Abstract L. Groenewegen and E.P. de Vink
Evolution-On-The-Fly with Paradigm

The coordination language Paradigm allows for a flexible and
orthogonal modeling of interprocess relationships at the
architectural level. It is shown how dynamic system adaptation can be
captured in Paradigm by means of a special evolution component and
associated evolution coordination scheme. The component, called McPal,
drives the migration following a just-in-time strategy in its own view
of the system, independent of other coordination relations. A
restricted scheme of McPal that supports various forms of
self-adaptation is presented. A simple but generic example of a
scheduler and workers illustrates on-the-fly updating of coordination
and run-time adaptation of scheduling policies using McPal.