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.
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Showing 1 to 20 of 73 for “"stencil"”.
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Tiling optimizations for stencil computations
… the techniques of tiling optimizations for stencil programs. Traditionally, research on tiling optimizations mainly focuses on tessellating tiling, atomic tiles and regular tile shapes. This thesis studies several novel tiling techniques which are out of the scope of traditional research. In …
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Automatic Performance Optimization of Stencil Codes
A widely used class of codes are stencil codes. Their general structure is very simple: data points in a large grid are repeatedly recomputed from neighboring values. This predefined neighborhood is the so-called stencil. Despite their very simple structure, stencil codes are hard to optimize since …
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A haptic stencil for manufacturing applications
The haptic stencil consists of a 5 DOF haptic device and an anti-collision algorithm that acts as a geometric stencil and can be used for a variety of applications ranging from training to rapid prototyping and manufacturing. Online manipulation of a three-axis desktop milling machine was …
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Blackbox Stencil Interpolation Method for model reduction
… a new formulation of machine learning, Black-box Stencil Interpolation Method, for this purpose. It is a non-intrusive, data-oriented method to infer the underlying physics that governs a simulation, which can be combined with conventional intrusive model reduction techniques. This method is …
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Real time process monitoring of solder paste stencil printing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Polynomial time optimal algorithm for stencil row planning in e-beam lithography
… (CP) technique has been proposed, and its stencil planning can be optimized with awareness of overlapping characters. However, the top-level 2D stencil planning problem has been proven to be an NP-hard problem. As its most essential step, the 1D row ordering is believed hard as well, and no …
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Optimization of Reactive Ion Etching to Fabricate Silicon Nitride Stencil Masks in SF6 Plasma
Stencil masks are used to print ultra-high resolution patterns using helium ion/atom beam lithography and are often manufactured from thin, free-standing silicon nitride membranes. The masks have sub-200nm openings etched through the thickness of the membrane using a reactive ion etch (RIE) process …
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Helium : lifting high-performance stencil kernels from stripped x86 binaries to halide DSL code
… how to automatically lift performance-critical stencil kernels from a stripped x86 binary and generate the corresponding code in the high-level domain-specific language Halide. Using Halide's state-of-the-art optimizations targeting current hardware, we show that new optimized versions of these …
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Characterisation of lead-free solder pastes and their correlation with the stencil printing process performance
… or flow experienced by the pastes during the stencil printing process. In addition, the rheological measurements can also be used as a quality control tool in the paste production process for identifying batch-to-batch variation, and to reduce the associated printing defects in the paste …
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Performance Engineering of Directional Message-Passing Algorithms Through a Stencil-Based Approach for Applications in Molecular Dynamics
… for the optimization of these algorithms using a stencil-like technique. The stencil-based algorithm, called StencilMD, provides both the benefits of parallelization and improved cache locality. The results show that StencilMD successfully reduces the amount of time required to run a molecular …
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Flexible electronics : materials and sensor fabrication
… sensors. Ink-jet, screen and stencil printing techniques were developed to print these devices. This work outlines attempts to develop a solution processable conductive ink for ink-jet printing. It then details the printing of commercial conductive ink on flexible substrates …
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Movement and placement of non-contiguous data in distributed GPU computing
… are examined. The first is a high-level 3D stencil communication library, which can automatically create a static communication plan based on the stencil and system parameters. This library is able to reduce the iteration time of a state-of-the-art stencil code by 1.45x at 3072 GPUs and 512 …
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Rheological characterisation of solder pastes and isotropic conductive adhesives (ICAs) for microsystems assembly technology
The printing of solder pastes through very small stencil apertures required for flip-chip pitch sizes, is expected to result in increased stencil clogging and incomplete transfer of paste to the printed circuit board pads. The paste printing process depends on conditions such as good paste roll, …
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Exploiting Locality and Parallelism With Hierarchically Tiled Arrays
… several important dense linear algebra kernels, stencil computation kernels, as well as some benchmarks in NAS benchmark suite were implemented. We show that the HTA codes needs less programming effort with a negligible effect on performance.
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Art, outrage, dialogue: a McLuhan reading of three visual communicative practices in Cape Town public space
… main artists; namely Michael Elion, The Tokolos Stencil Collective and Freddy Sam. The basis of the discussion is centred around the recent controversy surrounding Michael Elion's Sea Point public art sculpture, Perceiving Freedom (2014) and the respective questions it raised about what public …
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Portable and productive high-performance computing
… We illustrate how to autotune divide-and-conquer stencil computations using Ztune, and present performance comparisons with state-of-the-art "heuristic" autotuning. Not only does Ztune autotune significantly faster than a heuristic autotuner, the Ztuned programs also run faster on average than …
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Terapixel image processing and simulation with distributed halide
… pipeline of small computational kernels known as stencils. Halide is a popular domain-specific language and compiler designed to implement stencil algorithms. Halide uses simple language constructs to express what to compute and a separate scheduling co-language for expressing how to perform the …
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Advanced Manufacturing of Microengineered Ionic Polymer Metal Composites for Enhanced Sensing Capabilities
… electrode interface with 3D inkjet-printed and stencil-printed microfeatures is examined for the creation of eIPMC compression sensors with enhanced sensing capabilities.The first chapter provides a thorough review of the background of IPMC sensortechnology and the connection between the …
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High-Order Finite-Difference Schemes and Their Application to Computational Acoustics
… this thesis a hybrid seven-point, fourth-order stencil for computing spatial derivatives is presented and the time stability is analyzed in conjunction with a family of optimized low-dissipation and low-dispersion Runge-Kutta time-marching schemes. Using an eigenvalue analysis it is found that …
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