FIG. 9 illustrates an embodiment of a process for performing hierarchical dynamic scheduling. In some embodiments, process 900 is performed by a hyper-kernel, such as in conjunction with the assignProcessor routine. The process begins at 902 when an indication is received that a hyperthread should be assigned. Process 900 can be invoked in multiple ways. As one example, process 900 can be invoked when a hyperthread is available (i.e., has no current work to do). This can occur, for example, when the hyper-kernel determines (e.g., at 804) that a continuation should be made. The previously blocked hyperthread will become available because it is no longer responsible for handling the computation on which it blocked (i.e., the hyperthread becomes an “anonymous shadow processor”). As a second example, process 900 can be invoked when a message is received (e.g., by the hyper-kernel) that a previously unavailable resource is now available. The hyper-kernel will need to locate a hyperthread to resume the computation that needed the resource. Note that the hyperthread that was originally blocked by the lack of a resource need not be the one that resumes the computation once the resource is received.
