Posts
May, 6
Accelerating Cryptosystems on Hardware Platforms
In the past decade, one of the major breakthroughs in computer science theory is the first construction of fully homomorphic encryption (FHE) scheme introduced by Gentry. Using a FHE one may perform an arbitrary numbers of computations directly on the encrypted data without revealing of the secret key. Therefore, a practical FHE provides an invaluable […]
May, 6
GPU-Accelerated Joint 1D and 2D Barcode Localization on Smartphones
The built-in cameras and powerful processors have turned smartphones into ubiquitous barcode scanners. In smartphone-based barcode scanning, barcode localization is an important preprocessing step that quickly scans the entire camera image and passes barcode candidates to the actual decoder. This paper presents the implementation steps of a robust joint 1D and 2D barcode localization algorithm […]
May, 6
Implementing an efficient method of check-pointing on CPU-GPU
In this paper, we describe the design, implementation, verification and analysis of providing fine-grained architectural support for efficient check-pointing and restart on a CPU-GPU heterogeneous system. We use Multi2sim, a simulator, capable of emulating a CPU-GPU system. The simulator is capable of emulating a 32 bit x86 CPU that launches OpenCl Kernels on the GPU […]
May, 6
Mimetic Methods for Lagrangian Relaxation of Magnetic Fields
We present a new code that performs a relaxation of a magnetic field towards a force-free state (Beltrami field) using a Lagrangian numerical scheme. Beltrami fields are of interest for the dynamics of many technical and astrophysical plasmas as they are the lowest energy states that the magnetic field can reach. The numerical method strictly […]
May, 6
Multireduce and Multiscan on Modern GPUs
With the introduction of platforms like CUDA and OpenCL, the superior computing power of modern GPUs compared to CPUs is used more and more often to accelerate general purpose computations. Data parallel primitives like reduce, scan or sort can be used as simple, deterministic building blocks for parallel algorithms, hiding the complexity of the underlying […]
May, 5
Computer vision for continuous plankton monitoring
Plankton microorganisms constitute the base of the marine food web and play a great role in global atmospheric carbon dioxide drawdown. Moreover, being very sensitive to any environmental changes they allow noticing (and potentially counteracting) them faster than with any other means. As such they not only influence the fishery industry but are also frequently […]
May, 5
Non-separable 2D, 3D and 4D filtering with CUDA
We have presented solutions for fast non-separable floating point convolution in 2, 3 and 4 dimensions, using the CUDA programming language. We believe that these implementations will serve as a complement to the NPP library, which currently only supports 2D filters and images stored as integers. The shared memory implementation with loop unrolling is approximately […]
May, 5
Accelerating Mixed-Abstraction SystemC Models on Multi-Core CPUs and GPUs
Functional verification is a critical part in the hardware design process cycle, and it contributes for nearly two-thirds of the overall development time. With increasing complexity of hardware designs and shrinking time-to-market constraints, the time and resources spent on functional verification has increased considerably. To mitigate the increasing cost of functional verification, research and academia […]
May, 5
Assessing the Performance-Energy Balance of Graphics Processors for Spectral Unmixing
Remotely sensed hyperspectral imaging missions are often limited by onboard power restrictions while, simultaneously, require high computing power in order to address applications with relevant constraints in terms of processing times. In recent years, graphics processing units (GPUs) have emerged as a commodity computing platform suitable to meet real-time processing requirements in hyperspectral image processing. […]
May, 5
GPU-based Parallel Computing for Nonlinear Finite Element Deformation Analysis
Computer-based surgical simulation and non-rigid medical image registration in image-guided interventions are examples of applications that would benefit from real-time deformation simulation of soft tissues. The physics of deformation for biological soft-tissue is best described by nonlinear continuum mechanics-based models which then can be discretized by the Finite Element Method (FEM) for a numerical solution. […]
May, 3
Refresh Rate Modulation for Perceptually Optimized Computer Graphics
The application of human visual perception models to remove imperceptible components in a graphics system, has been proven effective in achieving significant computational speedup. Previous implementations of such techniques have focused on spatial level of detail reduction, which typically results in noticeable degradation of image quality. We introduce Refresh Rate Modulation (RRM), a novel perceptual […]
May, 3
GPU-accelerated ray-tracing for real-time treatment planning
Dose calculation methods in radiotherapy treatment planning require the radiological depth information of the voxels that represent the patient volume to correct for tissue inhomogeneities. This information is acquired by time consuming ray-tracing-based calculations. For treatment planning scenarios with changing geometries and real-time constraints this is a severe bottleneck. We implemented an algorithm for the […]
