Hierarchical Computations on Manycore Architectures Research Group
Professor David Keyes leads the so-called HiCMA research group, which stands for
Hierarchical Computations on Manycore Architectures
Research group areas of expertise and current scientific interests:
optimal algorithms, high-intensity computations, matrix-free methods
The activities of the group are mostly centered around network security problematics and, as the name of the group implies, the emphasis is put on the experimental validation of the novel solutions derived from our research. Several axes of research are explored in various projects, but they all have in common to start from a real-world problem that needs to be solved thanks to novel and concrete solutions. Among the topics studied by members of the team, it is worth mentioning the security issues related to IoT and OT networks, e-gaming environments, or web scraping bots.
Some algorithms achieve optimal arithmetic complexity with low arithmetic intensity (flops/Byte), or possess high arithmetic intensity but lack optimal complexity, while some hierarchical algorithms, such as Fast Multipole and its H-matrix algebraic generalizations, realize a combination of optimal complexity and high intensity. Implemented with task-based dynamic runtime systems, such methods also have potential for relaxed synchrony, which is important for future energy-austere architectures, since there may be significant nonuniformity in processing rates of different cores even if task sizes can be controlled. We describe modules of KAUST's Hierarchical Computations on Manycore Architectures (HiCMA) software toolkit that illustrate these features and are intended as building blocks of more sophisticated applications, such as matrix-free higher-order methods in optimization.
ECRC-HiCMA.
HiCMA's target is hierarchical algorithms on emerging architectures, which have hierarchies of their own that generally do not align well with those of the algorithm. Some modules of this open source project have been adopted in the software libraries of major vendors. We describe what is currently available and some motivating applications.
