Contemporary state-of-the-art runtime systems underlying widely utilized general purpose parallel programming languages and libraries like OpenMP, MPI, or OpenCL provide the foundation for accessing the parallel capabilities of modern computing architectures. In the tradition of their respective imperative host languages those runtime systems' main focus is on providing means for the distribution and synchronization of operations --- while the organization and management of manipulated data is left to application developers. Consequently, the distribution of data remains inaccessible to those runtime systems. However, many desirable system-level features depend on a runtime system's ability to exercise control on the distribution of data. Thus, program models underlying traditional systems lack the potential for the support of those features.
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