Open problems in scheduling self-suspending tasks

Self-suspension intervals are becoming increasingly common in various systems such as: (i) multi-core proces-sors, where tasks running on one core have to synchronize with tasks running on other cores, (ii) heterogeneous ISA multi-core processors, where certain instructions can only be executed on specific processor cores, and (iii) systems with accelerated co-processors such as Digital Signal Pro-cessors (DSPs) or Graphics Processing Units (GPUs). In the light of these developments, a few key questions arise: (a) What should be the standard task model for specifying suspension intervals in such systems? (b) Given that clas-sical scheduling algorithms such as Earliest-Deadline First (EDF) suffer from scheduling anomalies in self-suspending task systems, does there exist a competitive anomaly-fre