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Ondrej Mosnacek
Key derivation functions are a key element of many cryptographic applications. Password-based key derivation functions are designed specifically to derive cryptographic keys from low-entropy sources (such as passwords or passphrases) and to counter brute-force and dictionary attacks. However, the most widely adopted standard for password-based key derivation, PBKDF2, as implemented in most applications, is highly […]
Steffen Christgau, Johannes Spazier, Bettina Schnor
In this paper, the performance and scalability of different multi-core systems is experimentally evaluated for the Tsunami simulation EasyWave. The target platforms include a standard Ivy Bridge Xeon processor, an Intel Xeon Phi accelerator card, and also a GPU. OpenMP, MPI and CUDA were used to parallelize the program to these platforms. The absolute performance […]
Olaf Ronneberger, Philipp Fischer, Thomas Brox
There is large consent that successful training of deep networks requires many thousand annotated training samples. In this paper, we present a network and training strategy that relies on the strong use of data augmentation to use the available annotated samples more efficiently. The architecture consists of a contracting path to capture context and a […]
Geoffrey Ndu, Javier Navaridas, Mikel Lujan
Programming FPGAs with OpenCL-based high-level synthesis frameworks is gaining attention with a number of commercial and research frameworks announced. However, there are no benchmarks for evaluating these frameworks. To this end, we present CHO benchmark suite an extension of CHStone, a commonly used C-based high-level synthesis benchmark suite, for OpenCL. We characterise CHO at various […]
Georgios Rokos, Gerard J. Gorman, Paul H. J. Kelly
In this paper we present a parallel for-loop scheduler which is based on work-stealing principles but runs under a completely cooperative scheme. POSIX signals are used by idle threads to interrupt left-behind workers, which in turn decide what portion of their workload can be given to the requester. We call this scheme Interrupt-Driven Work-Sharing (IDWS). […]
William B. Langdon, Brian Yee Hong Lam, Justyna Petke, Mark Harman
We genetically improve BarraCUDA using a BNF grammar incorporating C scoping rules with GP. Barracuda maps next generation DNA sequences to the human genome using the Burrows-Wheeler algorithm (BWA) on nVidia Tesla parallel graphics hardware (GPUs). GI using phenotypic tabu search with manually grown code can graft new features giving more than 100 fold speed […]
Devin Homan
CVPI is a library for implementing computer vision programs on computers supporting OpenVG. It adds additional image processing capabilities to OpenVG that are necessary for computer vision, as well a as providing an interface to setup the rendering environment. OpenVG is a hardware accelerated C API for vector and raster 2D graphics. It is widely […]
Witold Andrzejewski, Artur Gramacki, Jaroslaw Gramacki
Approximate query processing (AQP) is an interesting alternative for exact query processing. It is a tool for dealing with the huge data volumes where response time is more important than perfect accuracy (this is typically the case during initial phase of data exploration). There are many techniques for AQP, one of them is based on […]
C. L. Jermain, G. E. Rowlands, R. A. Buhrman, D. C. Ralph
Highly-parallel graphics processing units (GPUs) can improve the speed of micromagnetic simulations significantly as compared to conventional computing using central processing units (CPUs). We present a strategy for performing GPU-accelerated micromagnetic simulations by utilizing cost-effective GPU access offered by cloud computing services with an open-source Python-based program for running the MuMax3 micromagnetics code remotely. We […]
Oren Segal, Philip Colangelo, Nasibeh Nasiri, Zhuo Qian, Martin Margala
We introduce SparkCL, an open source unified programming framework based on Java, OpenCL and the Apache Spark framework. The motivation behind this work is to bring unconventional compute cores such as FPGAs/GPUs/APUs/DSPs and future core types into mainstream programming use. The framework allows equal treatment of different computing devices under the Spark framework and introduces […]
Amir Gholami, Judith Hill, Dhairya Malhotra, George Biros
We present a new library for scalable 3-D Fast Fourier Transforms (FFT). Despite the large amount of work on 3-D FFTs, we show that significant speedups can be achieved for large problem sizes and core counts. The importance of FFT in science and engineering and the advances in high performance computing necessitate further improvements in […]
Robert Merrison-Hort
In non-linear systems, where explicit analytic solutions usually can’t be found, visualisation is a powerful approach which can give insights into the dynamical behaviour of models; it is also crucial for teaching this area of mathematics. In this paper we present new software, Fireflies, which exploits the power of graphical processing unit (GPU) computing to […]
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