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Robert Senser, Tom Altman
DEFG is our declarative language and framework for the efficient generation of OpenCL GPU applications. Using our new DEFG implementation, run-time and lines-of-code comparisons are provided for three well-known algorithms: Sobel image filtering, breadth-first search and all-pairs shortest path. The DEFG declarative language and corresponding OpenCL kernels provide complete OpenCL applications. The lines-of-code comparison demonstrates […]
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N. Tuck
This dissertation explores just-in-time (JIT) specialization as an optimization for OpenCL data-parallel compute kernels. It describes the implementation and performance of two extensions to OpenCL, Bacon and Specialization Annotated OpenCL (SOCL). Bacon is a replacement interface for OpenCL that provides improved usability and has JIT specialization built in. SOCL is a simple extension to OpenCL […]
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Yaakoub El-Khamra, Niall Gaffney, David Walling, Eric Wernert, Weijia Xu, Hui Zhang
Over the years, R has been adopted as a major data analysis and mining tool in many domain fields. As Big Data overwhelms those fields, the computational needs and workload of existing R solutions increases significantly. With recent hardware and software developments, it is possible to enable massive parallelism with existing R solutions with little […]
Thierry Coppey
Dynamic programming is an algorithmic technique to solve problems that follow the Bellman’s principle: optimal solutions depends on optimal sub-problem solutions. The core idea behind dynamic programming is to memoize intermediate results into matrices to avoid multiple computations. Solving a dynamic programming problem consists of two phases: filling one or more matrices with intermediate solutions […]
Carlos Alberto Martinez Angeles
Datalog is a language based on first order logic that was investigated as a data model for relational databases in the 1980s. It has recently been used in various new application areas, prompting proposals to run Datalog programs on new platforms such as Graphics Processing Units (GPUs) and MapReduce. Back then and nowadays, interest in […]
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Swadhin K. Mangaraj
SkePU (Skeleton Programming Framework for Multi-core CPU and Multi-GPU Systems) is a parallel computing framework developed by Johan Enmyren and Christoph Kessler at Linkopings Universitet. This C++ template library provides a simple and unified interface for specifying data-parallel computations with the help of skeletons and is targeted to multiple backends e.g. for a sequential CPU, […]
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John Canny, David Hall, Dan Klein
Constituency parsing with rich grammars remains a computational challenge. Graphics Processing Units (GPUs) have previously been used to accelerate CKY chart evaluation, but gains over CPU parsers were modest. In this paper, we describe a collection of new techniques that enable chart evaluation at close to the GPU’s practical maximum speed (a Teraflop), or around […]
Mathias Bourgoin, Emmanuel Chailloux, Jean-Luc Lamotte
We present an OCaml GPGPU library with a DSL embedded into OCaml to express GPGPU kernels. The level of performance achieved is measured through different examples. We also discuss the use of GPGPU programming to increase the performance of multicore-CPUs software, written in OCaml.
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Tom Henretty, Justin Holewinski, Richard Veras, Franz Franchetti, Louis-Noel Pouchet, J. Ramanujam, Atanas Rountev, P. Sadayappan
Stencil computations are an integral part of applications in a number of scientific computing domains, such as image processing and partial differential equations. We describe a domain-specific language for regular stencil computations, that allows specification of the computations in a concise manner. We describe a multi-target compiler for this DSL, that generates optimized code for […]
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Martin Griffin, Aidan Delaney, Karina Rodriguez Echavarria
We record and digitally preserve public monuments by describing them using a generative language. Such generative models allow visualisations of the monuments to be computed from descriptions that are suitable for transmission to personal mobile devices. The intent of using a personal mobile device is to make the cultural heritage experience more personal to the […]
Alexander Collins, Dominik Grewe, Vinod Grover, Sean Lee, Adriana Susnea
Functional languages provide a solid foundation on which complex optimization passes can be designed to exploit available parallelism in the underlying system. Their mathematical foundations enable high-level optimizations that would be impossible in traditional imperative languages. This makes them uniquely suited for generation of efficient target code for parallel systems, such as multiple Central Processing […]
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Alejandro Fernandez Suarez
High Performance Computing (HPC) relies completely on complex parallel, heterogeneous architectures and distributed systems which are hard and error-prone to exploit, even for HPC specialists. Further and further knowledge on runtime systems, dependency tracking, memory transaction optimization and many other techniques are a must-have requirement to produce high quality software capable of exploiting every single […]
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