high performance computing on graphics processing units: hgpu.org

The aim of this dCSE project was to improve the TBE code which is based on the tight binding model with self consistent multipole charge transfer. Given an appropriate parameterisation, the code is general and can be used to simulate a wide variety of systems and phenomena such as bond breaking, charge and magnetic polarisation. […]

Hyperspectral imaging with a high spatial and spectral resolution can be used to analyze materials using spectroscopic methods. This can be applied on skin as a general purpose real-time diagnostic tool. Light transport models, like the diffusion model, can describe the light propagation in tissue before the light is captured by the hyperspectral camera. The […]

The use of GPUs to accelerate general-purpose scientific and engineering applications is mainstream today, but their adoption in current high-performance computing clusters is impaired primarily by acquisition costs and power consumption. Therefore, the benefits of sharing a reduced number of GPUs among all the nodes of a cluster can be remarkable for many applications. This […]

In the past decades, besides experiencing a huge development in terms of computation speed, we have also experienced the emergence of the Programmable GPU, giving birth to languages like GLSL and CUDA. This technology gives great flexibility for the usage of such a powerful hardware, attracting the interest of many researchers and programmers to this […]

Physical system models that consist of thousands of ordinary differential equations can be synthesized to field-programmable gate arrays (FPGAs) for highly-parallelized, real-time physical system emulation. Previous work introduced synthesis of custom networks of homogeneous processing elements, consisting of processing elements that are either all general differential equation solvers or are all custom solvers tailored to […]

Image reconstruction is a process of obtaining the original image from corrupted data. Applications of image reconstruction include Computer Tomography, radar imaging, weather forecasting etc. Recently steering kernel regression method has been applied for image reconstruction [1]. There are two major drawbacks in this technique. Firstly, it is computationally intensive. Secondly, output of the algorithm […]

With the rapid growth of Internet, E-mail, with its convenient and efficient characteristics, has become an important means of communication in people’s life. It reduces the cost of communication. It comes with Spam. Spam emails, also known as "junk e-mails", are unsolicited one’s sent in bulk with hidden or forged identity of the sender, address, […]

With the increased processing required in the last years, and the search for devices with better performance, started in computing a need to parallelize processing, making it possible to support the performance of software and algorithms requiring high processing pattern. It’s possible to use the processing power of devices like the GPU to run parallel […]

While multi-core architectures allow for high performance gains, the use of a specialized framework is often required to maximize the use of the available hardware. This paper compares the performance of three different frameworks, Cilk, Kaapi and CUDA, in implementing the Jacobi method.

GPU acceleration is a promising approach to speed up query processing of database systems by using low cost graphic processors as coprocessors. Two major trends have emerged in this area: (1) The development of frameworks for scheduling tasks in heterogeneous CPU/GPU platforms, which is mainly in the context of coprocessing for applications and does not […]

Voronoi diagrams are fundamental data structures in computational geometry with several applications on different fields inside and outside computer science. This paper shows a CUDA algorithm to compute Voronoi diagrams on a 2D image where the distance between points cannot be directly computed in the euclidean plane. The proposed method extends an existing Dijkstra-based GPU […]

Today top ranked HPC systems feature several GPUs which present high processing speed at low power budget with various parallel applications. Many scientific applications still claim for even more computing speed than the available today. A general approach to provide more processing speed is to scale the system. However, aspects such as interference, the amount […]