Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 28 for “"auto-tuning"”.
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Auto-tuning on the macro scale : high level algorithmic auto-tuning for scientific applications
… this thesis, we describe a new classification of auto-tuning methodologies spanning from low-level optimizations to high-level algorithmic tuning. This classification spectrum of auto-tuning methods encompasses the space of tuning parameters from low-level optimizations (such as block sizes, …
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Program auto-tuning through population-based stochastic optimization
… innate logic. In various domains, program autotuners have been developed which can automatically search for optimal program configurations using established optimization methods. OpenTuner is a general-purpose autotuner which provides a flexible search domain representation and robust …
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TOWARDS RELAY FEEDBACK AUTO-TUNING OF MULTI-LOOP SYSTEMS
… fashion. This thesis is a step towards the autotuning of these controllers using the relay feedback technique. The thesis discusses the following; the effect of placing cascade and m x m multivariable plants under relay feedback, the information that can be derived from the oscillations that …
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Deep Mining : scaling Bayesian auto-tuning of data science pipelines
Within the automated machine learning movement, hyperparameter optimization has emerged as a particular focus. Researchers have introduced various search algorithms and open-source systems in order to automatically explore the hyperparameter space of machine learning methods. While these approaches …
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PID Auto-Tuning and Control System for Heaters in μGC Systems
… the desired response. The conventional method of tuning the PID control parameters by trial and error is a tedious process and time-consuming process. This thesis aims to develop a PID auto-tuning and control system for auto-tuning microfabricated heaters in modular μGC systems. The developed …
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Directive-Based Data Partitioning and Pipelining and Auto-Tuning for High-Performance GPU Computing
… can require extensive refactoring and hand-tuning to apply data transfer optimizations, and users must manually partition their dataset whenever its size is larger than device memory, which can be highly difficult when the device memory size is not exposed to the user. As the systems are …
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Optimizing I/O performance for high performance computing applications: from auto-tuning to a feedback-driven approach
… in-depth application’s performance analysis and tuning.
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Methodology for Zero-Cost Auto-tuning of Embedded PID Controllers for Actuators: A Study on Proportional Valves in Micro Gas Chromatography Systems
… thesis describes the implementation of zero-cost auto-tuning techniques for embedded Proportional Integral and Derivative (PID) controllers, specifically focusing on their application in the control of proportional valves within Micro Gas Chromatography (uGC) systems. uGC systems are miniaturized …
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AUTOMATIC TUNING OF PROCESS CONTROLLERS : PRACTICAL APPROACHES
This thesis focuses on practical tuning approaches for PID controllers - the most widely used controller in the process industry. Through analysis and approximation, analytical tuning formulas based on gain margin and phase margin are derived. These analytical formulas are particularly useful in …
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Fractional Order Systems:PID Controller Design and Fractional Order Element Modeling
… The Ph.D. Thesis' purpose is to present the auto-tuning procedure of Fractional Order PID Controllers PID proposing also a future implementation via fractional order elements. The Thesis is organized in four chapters to outline the different research activity phases developed during the Ph.D. …
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Auto-tuned optimized parallel I/O for GIScience and spatial applications
… and Block-Wise I/O. We then establish an auto-tuning framework for finding optimal parallel I/O configurations. This auto-tuning framework is based on genetic algorithm and works on a range of configurations from the parallel file system all the way up to spatial data-analysis …
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Vibration Suppression Using Smart Materials in the Presence of Temperature Changes
… changes of the structural dynamics. Aircraft, automotive, and satellite structures are also subject to various vibration sources. Passive and active vibration suppression techniques have been developed to minimize acoustic noise and fatigue stress damage. Featuring low weight solutions and high …
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Distributed data as a choice in PetaBricks
… computation order and data placement with auto-tuning, programmers do not need to modify the programs when migrating to a new system. In this thesis, we address the problem of automatically partitioning PetaBricks programs across a cluster of distributed memory machines. It is complicated …
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Towards Enhancing Performance, Programmability, and Portability in Heterogeneous Computing
… (e.g., in compilers, programming languages, and auto-tuning), we propose the introduction of grid-based data structures as the basis of programming frameworks and present a prototype unified framework (GLAF) that encompasses a novel visual programming environment with code generation, …
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Automated Discovery of Big Data Workload Types
… part of big data workload prediction and auto-tuning big data applications. Due to many different ways of applying big data frameworks and applications, there are various categories that these workloads can belong. Clustering techniques are applied in this research to detect Apache Spark …
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Dynamic Pile-Soil Interaction in Laterally Spreading Slopes
… This study recommends that this potential for “auto tuning” should be anticipated in design and proposes a new limiting pseudo-static backbone p-y curve for use in the design of piles subjected to lateral spreading ground deformation.
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Advanced Control Schemes for High-Bandwidth Multiphase Voltage Regulators
… design. Then, the existing state-of-the-art auto-tuning method used to improve current-sensing accuracy is reviewed, and the deficiency of using this method in a multiphase VR is identified. After that, enlightened by the proposed model, a novel auto-tuning method is proposed. This novel …
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On Communication-Computation Overlap in High-Performance Computing
… at the end-user level. This is achieved by an automatic run-time tuning of non-blocking collective-communication operations, which allows the communication library to maximize communication-computation overlap, and choose the best performing implementation for a non-blocking-collective …
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Synthesis of domain specific CNF encoders for bit-vector solvers
… In this thesis, we propose a system that can automatically generate parts of SMT solvers in a way that is tailored to particular problem domains. In particular, we target the translation from high-level constraints to CNF clauses which is one of the crucial parts of all SMT solvers. We achieve …
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