high performance computing on graphics processing units: hgpu.org

In the advent of new large galaxy surveys, which will produce enormous datasets with hundreds of millions of objects, new computational techniques are necessary in order to extract from them any two-point statistic, the computational time of which grows with the square of the number of objects to be correlated. Fortunately technology now provides multiple […]

The optimization of the irregular connection network of the multiprocessor systems with the distributed memory is the NP complete problem which is generally compute-intensive process. Graphics processing units provide a large computational power at a very low price allowing the fine-grained parallelism. This work investigates the use of the GPU in the parallelisation of the […]

This paper presents a design for parallel processing of synthetic aperture radar (SAR) data using multiple Graphics Processing Units (GPUs). Our approach supports real-time reconstruction of a two-dimensional image from a matrix of echo pulses and their response values. Key to runtime efficiency is a partitioning scheme that divides the output image into tiles and […]

The basic concept behind the architecture of a general purpose CPU core conforms well to a serial programming model. The integration of more cores on a single chip helped CPUs in running parts of a program in parallel. However, the utilization of huge parallelism available from many high performance applications and the corresponding data is […]

Multidimensional scaling (MDS) is a very popular and reliable method used in feature extraction and visualization of multidimensional data. The role of MDS is to reconstruct the topology of an original N-dimensional feature space consisting of M feature vectors in target 2-D (3-D) Euclidean space. It can be achieved by minimization of the error – […]

A new method is presented in this paper for using general purpose programming tools of graphics processing units. It aims to calculate the modified discrete cosine transform in audio coding and compression algorithms for popular audio formats such as MP3, AAC/AC-3, and WMA. The proposed algorithm consists of matrix multiplications that are performed by the […]

MOTIVATION: Accurate comparisons of different protein structures play important roles in structural biology, structure prediction and functional annotation. The root-mean-square-deviation (RMSD) after optimal superposition is the predominant measure of similarity due to the ease and speed of computation. However, global RMSD is dependent on the length of the protein and can be dominated by divergent […]

The ever-rising importance of communication services and devices emphasizes the significance of intrusion detection. Besides general network attacks, private hosts in particular are within the focus of cyber criminals. Private data theft and the integration of individual hosts into large-scale botnets are two common purposes successfully subverted systems are used for. In order to detect […]

In this paper we present out experiences with the implementation of an object detector using OpenCL. With this implementation we fullfil the need for fast and robust object detection, necessary in many applications in multiple domains (surveillance, traffic, image retrieval, …). The algorithm lends itself to be implemented in a parallel way. We exploit this […]

The design of newer ultrasonic imaging systems attempts to obtain low-cost, small-sized devices with reduced power consumption that are capable of reaching high frame rates with high image quality. In this regard, synthetic aperture techniques have been very useful. They reduce hardware requirements and accelerate information capture. However, the beamforming process is still very slow, […]

When video is transmitted over 3G networks, the video quality might suffer from impairments caused by packet losses. Extracting video quality features is a set of algorithms and inverse discrete cosine transforms is an important algorithm in this field. To improve the performance and be suitable to apply to evaluating the 3G video quality in […]

GPU computing has emerged as a viable alternative to CPUs for throughput oriented applications or regions of code. Speedups of 10 to 100x over CPU implementations have been reported. This trend is expected to continue in the future with GPU architectural advances, improved programming support, scaling, and tighter CPU-GPU chip integration. However, not all code […]