high performance computing on graphics processing units: hgpu.org

Although sort has been extensively studied in many research works, it still remains a challenge in particular if we consider the implications of novel processor technologies such as manycores (i.e. GPUs, Cell/BE, multicore, etc.). In this paper, we compare different algorithms for sorting integers on stream multiprocessors and we discuss their viability on large datasets […]

We present the parallel implementation of two new algorithms developed for the discrete cosine transform. These algorithms support the new interleaved fast Fourier transform method. Our techniques were realized using the MPI standard library and executed on a variety of equipment for comparison. The results indicate a promising fresh direction in the search for efficient […]

An idea of the use of two accumulators for improvement of the precision of floating-point computations with graphic processing units (GPUs) is presented in this paper for applications in digital signal processing. The increase of the precision of computations does not need any increase of the length of the data words. This is particularly important […]

This paper presents the conceptual definition of a framework to help in the construction of intelligent games, where Artificial Intelligence Techniques could be inserted in the game in an easier way. The requirements analysis of the main AI techniques are presented as well as the preliminary results of this framework.

We have developed a robust and scalable multi-GPU (Graphics Processing Unit) version of the cellular-automaton-based MAGFLOW lava simulator. The cellular automaton is partitioned into strips that are assigned to different GPUs, with minimal overlapping. For each GPU, a host thread is launched to manage allocation, deallocation, data transfer and kernel launches; the main host thread […]

Image Processing Production lines featuring industrial vision are becoming more and more widespread. That kind of automation needs systems able to capture pictures, analyze and learn from them in order to take appropriate action. These processes are often heavy and applied to high-definition images with important frame rate. Powerful calculators are thus needed to follow […]

In almost all cases, N-body simulations are limited by the computation time available. Coulomb interaction calculations scale with O(N^2) with N the number of particles. Approximation methods exist already to reduce the computation time to O(NlogN), although calculating the interaction still dominates the total simulation time. We present Simbuca, a simulation package for thousands of […]

This work reports on advances in large-scale multibody dynamics simulation facilitated by the use of the Graphics Processing Unit (GPU). A description of the GPU execution model along with its memory spaces is provided to illustrate its potential parallel scientific computing. The equations of motion associated with the dynamics of large system of rigid bodies […]

In the last decade, the importance of graphics capabilities have become very important in the mobile market. As a result low power embedded solutions for mobile devices have been eveloped to run computationally intensive graphics applications, which extensively uses floating point calculations. The work proposed in this thesis target the extension of the Silicon Hive […]

The typical goals for defining a control net for a NonUniform Rations B-spline (NURBs) based metamodel from a given set of data the desired result is the smallest set of control points in the least possible time while minimizing local and/or global error. Current metamodel fitting algorithms iteratively find and eliminate the largest sources of […]

This study is a first part of a longer project investigating hybrid and heterogeneous computing models in computational science. This is joint work with Fujitsu Laboratories Europe (FLE) with the purpose of developing numerical software libraries under the Open Petascale Libraries Project. We overview some current work and trends relating to petascale algorithms and their […]

Stereo matching algorithms and multi camera reconstruction algorithms are usually compared using benchmarks. These benchmarks compare the quality of the resulting depth map or reconstructed surface mesh. We describe the differences between several known stereo and multi-view stereo benchmarks and their various datasets. Also the modifications that are necessary to use our own GPU based […]