The macro-dataflow model of execution has been used in scheduling heuristics for directed acyclic graphs. Since this model was developed for the scheduling of parallel applications on distributed computing systems, it is inadequate when applied to the multicore shared-memory computers prevalent in the market today. The pulled-macro-dataflow model is put forth as an alternative to the macro-dataflow model, having been designed specifically to accurately describe the memory bandwidth limitations and request-driven nature of communications characteristic of today's machines. The performance of the common scheduling heuristics DSC and CASS-II are evaluated under the pulled-macro-dataflow model and it is shown that their poor performance motivates the development of a new scheduling heuristic. The Concurrent Tournament Reducer (ConTouR) is developed as a scheduling heuristic which operates well with the pulled-macro-dataflow model. ConTouR is compared to the existing heuristics Load Balancing and Communication Minimization in scheduling two programs. For both programs, the other reducers are shown to outperform ConTouR.

This dissertation presents a Parsesciencing study of the universal humanuniverse living experience of feeling pulled in different directions. Concept inventing reveals feeling pulled in different directions as pondering inspirations surfaces with desire amid tenuous integrity in a whirling inertia of possibility. Personal foreknowings illuminate feeling pulled in different directions as aw(e)ful delight surfaces with the struggles of taking a bearing along an unfolding, diverging way. Stories of ten historians, as presented and heuristically interpreted through several levels of abstraction, reveal feeling pulled in different directions as constrained vigor surfaces with wavering amid cherished potentials which is transmogrified as restricted endeavoring surfaces with capricious yearning. Core ideas of constrained vigor and wavering with cherished potentials are discussed in relation to extant literature. To inspire future inquiry, new knowings of this Parsesciencing are discussed in relation to nursing education, research, and care. / Graduate / 2022-12-31