Search for dissertations about: "exascale"

Found 5 swedish dissertations containing the word exascale.

2. 1. HPC scheduling in a brave new world

   Author : Rodrigo Gonzalo P.; Erik Elmroth; Lavanya Ramakrishnan; Per-Olov Östberg; Ewa Deelman; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; High Performance Computing; HPC; supercomputing; scheduling; workflows; workloads; exascale; business data processing; administrativ databehandling;

   Abstract : Many breakthroughs in scientific and industrial research are supported by simulations and calculations performed on high performance computing (HPC) systems. These systems typically consist of uniform, largely parallel compute resources and high bandwidth concurrent file systems interconnected by low latency synchronous networks. READ MORE

4. 2. High-Performance I/O Programming Models for Exascale Computing

   Author : Sergio Rivas-Gomez; Stefano Markidis; Erwin Laure; Martin Schulz; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : The success of the exascale supercomputer is largely dependent on novel breakthroughs that overcome the increasing demands for high-performance I/O on HPC. Scientists are aggressively taking advantage of the available compute power of petascale supercomputers to run larger scale and higher-fidelity simulations. READ MORE

5. 3. Implementation of complex polarization propagator theory for linear response properties of large molecular systems

   Author : Manuel Brand; Patrick Norman; Berta Fernández Rodríguez; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical Chemistry and Biology; Teoretisk kemi och biologi;

   Abstract : Since its beginning, the remarkable development from the first commercially available computers toward exascale supercomputers just within the span of a lifetime has been closely intertwined with the perpetual quest for the utilization of the arising computing power for the avail of theoretical chemistry. With the aim of further pushing the limits of computationally accessible molecular system sizes, this thesis includes the presentation of programming efforts, which brought forth two quantum chemical software codes, as well as a range of ab initio studies on carbon-based systems, enabled by the former. READ MORE

6. 4. Towards adaptive mesh refinement in Nek5000

   Author : Nicolas Offermans; Philipp Schlatter; Adam Peplinski; Paul Fischer; Chris Cantwell; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Error estimators; mesh refinement; adaptivity; spectral element method; algebraic multigrid method; Engineering Mechanics; Teknisk mekanik;

   Abstract : The development of adaptive mesh refinement capabilities in the field of computational fluid dynamics is an essential tool for enabling the simulation of larger and more complex physical problems. While such techniques have been known for a long time, most simulations do not make use of them because of the lack of a robust implementation. READ MORE

7. 5. Aspects of adaptive mesh refinement in the spectral element method

   Author : Nicolas Offermans; Philipp Schlatter; Ananias Tomboulides; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Error estimators; mesh refinement; adaptivity; spectral element method; algebraic multigrid method; NACA4412; periodic hill case.; Engineering Mechanics; Teknisk mekanik;

   Abstract : This thesis deals with the improvement of the efficiency of numerical simulations in computational fluid dynamics. Some of the limitations of current algorithms on future exascale supercomputers are addressed with the main goal of using adaptive mesh refinement for the simulation of turbulent and three-dimensional flows. READ MORE