high performance computing on graphics processing units: hgpu.org

Global Illumination aims to generate high quality images. But due to its high requirements, it is usually quite slow. Research documented in this thesis was intended to offer a hardware and software combined acceleration solution to global illumination. The GPU (using CUDA) was the hardware part of the whole method that applied parallelism to increase […]

Given a collection of documents residing on a disk, we develop a new strategy for processing these documents and building the inverted files extremely fast. Our approach is tailored for a heterogeneous platform consisting of a multicore CPU and a highly multithreaded GPU. Our algorithm is based on a number of novel techniques including: (i) […]

In this paper, we present an approach for efficiently monitoring multiple data streams using graphic processor units (GPUs). Given reference patterns, similar subsequences in streams are matched under the dynamic time warping (DTW) distance and reported continuously. DTW distance is adopted since it offers scaling and shifting exibility in the time axis. However, it suffers […]

In this article, we propose an efficient and accurate compressive-sensing-based method for estimating the light transport characteristics of real-world scenes. Although compressive sensing allows the efficient estimation of a high-dimensional signal with a sparse or near-to-sparse representation from a small number of samples, the computational cost of the compressive sensing in estimating the light transport […]

Major web search engines answer thousands of queries per second requesting information about billions of web pages. The data sizes and query loads are growing at an exponential rate. To manage the heavy workload, we consider techniques for utilizing a Graphics Processing Unit (GPU). We investigate new approaches to improve two important operations of search […]

Real-time rendering of static volumetric data is generally known to be a memory and computationally intensive process. With the advance of graphic hardware, especially GPU, it is now possible to do this using desktop computers. However, with the evolution of real-time CT and MRI technologies, volumetric rendering is an even bigger challenge. The first one […]

The PFAC algorithm efficiently exploits the parallelism of the Aho-Corasick algorithm by creating an individual thread for each byte of an input stream to identify any pattern starting at the thread’s starting position. The number of threads created by the PFAC algorithm is equal to the length of an input stream.

Numerical models play a main role in the earth sciences, filling in the gap between experimental and theoretical approach. Nowadays, the computational approach is widely recognized as the complement to the scientific analysis. Meanwhile, the huge amount of observed/modelled data, and the need to store, process, and refine them, often makes the use of high […]

As graphics processing unit (GPU) architects have made their pipelines more programmable in recent years, GPUs have become increasingly general-purpose. As a result, more and more general-purpose, non-graphics applications are being ported to GPUs. Past work has focused on applications that map well to the data parallel GPU programming model. These applications are usually embarrassingly […]

EGSnrc is a well-known Monte Carlo simulation package for coupled electron-photon transport that is widely used in medical physics application. This paper proposes a parallel implementation of the photon transport mechanism of EGSnrc for graphics processing units (GPUs) using NVIDIA’s Compute Unified Device Architecture (CUDA). The implementation is specifically designed for imaging applications in the […]

Network intrusion detection systems are faced with the challenge of identifying diverse attacks, in extremely high speed networks. For this reason, they must operate at multi-Gigabit speeds, while performing highly-complex per-packet and per-flow data processing. In this paper, we present a multi-parallel intrusion detection architecture tailored for high speed networks. To cope with the increased […]

This book focuses on advanced rendering techniques that run on the DirectX and/or OpenGL run-time with any shader language available. It includes articles on the latest and greatest techniques in real-time rendering, including MLAA, adaptive volumetric shadow maps, light propagation volumes, wrinkle animations, and much more. The book emphasizes techniques for handheld programming to reflect […]