high performance computing on graphics processing units: hgpu.org

A heterogeneous CPU-GPU node is getting popular in HPC clusters. We need to rethink algorithms and optimization techniques for such system depending on the relative performance of CPU vs. GPU. In this paper, we report a performance optimized particle simulation code "OTOO", that is based on the octree method, for heterogenous systems. Main applications of […]

Pseudorandom number generators are required for many computational tasks, such as stochastic modelling and simulation. This paper investigates the serial CPU and parallel GPU implementation of a Linear Congruential Generator based on the binary representation of the normal number $alpha_{2,3}$. We adapted two methods of modular reduction which allowed us to perform most operations in […]

Accelerator awareness has become a pressing issue in data movement models, such as MPI, because of the rapid deployment of systems that utilize accelerators. In our previous work, we developed techniques to enhance MPI with accelerator awareness, thus allowing applications to easily and efficiently communicate data between accelerator memories. In this paper, we extend this […]

Hard-core interacting particle methods are of increasing importance for simulations and game applications as well as a tool supporting animations. We develop a high accuracy numerical integration technique for managing hard-core colliding particles of various physical properties such as differing interaction species and hard-core radii using multiple Graphical Processing Unit (m-GPU) computing techniques. We report […]

With the rise of general purpose computing on graphics processing units (GPGPU), the influence from consumer markets can now be seen across the spectrum of computer architectures. In fact, many of the high-ranking Top500 HPC systems now include these accelerators. Traditionally, GPUs have connected to the CPU via the PCIe bus, which has proved to […]

We show how to accelerate relativistic hydrodynamics simulations using graphic cards (graphic processing units, GPUs). These improvements are of highest relevance e.g. to the field of high-energetic nucleus-nucleus collisions at RHIC and LHC where (ideal and dissipative) relativistic hydrodynamics is used to calculate the evolution of hot and dense QCD matter. The results reported here […]

Spherical Harmonic Transforms (SHT) are at the heart of many scientific and practical applications ranging from climate modelling to cosmological observations. In many of these areas new, cutting-edge science goals have been recently proposed requiring simulations and analyses of experimental or observational data at very high resolutions and of unprecedented volumes. Both these aspects pose […]

ESCO 2012 is the 3rd event in a successful series of interdisciplineary meetings dedicated to modern methods and practices of scientific computing. Main thematic areas include: Multiphysics coupled problems, Higher-order computational methods, Computing with Python, GPU computing, and Cloud computing. Theoretical results as well as applications are welcome. Application areas include, but are not limited […]

The International Conference on Information Management in the Knowledge Economy is a multidisciplinary Conference on digital information management, science and technology. The principal aim of this conference is to bring professionals in academia, research laboratories and industry together, and offer a collaborative platform to address the emerging issues and solutions in digital information science and […]

ASPLOS is the premier forum for multidisciplinary systems research spanning computer architecture and hardware, programming languages and compilers, operating systems and security, as well as applications and human-computer interaction. The importance of such crosscutting systems research has been growing hand in hand with the amount of parallelism in hardware, the scope of distribution in internet-scale […]

Parallelization has moved in recent years into the mainstream compilers, and the demand for parallelizing tools that can do a better job of automatic parallelization is higher than ever. During the last decade considerable attention has been focused on developing programming tools that support both explicit and implicit parallelism to keep up with the power […]

My thesis explains how we can apply techniques borrowed from the area of visualization to reveal weaknesses in applications and cryptosystems. A presentation of how graphical processing units can be used for general computing is presented in the first half of the thesis. The second half provides an overview of basic techniques and applies these […]