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In the field of high-performance and energy-efficient scientific computing, FPGAs are promising candidates. In this paper, we show a case study of applying FPGA-based system for Modified Newtonian Dynamics (MOND) cosmological simulation. The numerical simulation is based on TreePM algorithm of N-body problem. TreePM algorithm combines the PM (Particle Mesh) method on large scales with a tree method...
Idle periods on different processes of Message Passing applications are unavoidable. While the origin of idle periods on a single process is well understood as the effect of system and architectural random delays, yet it is unclear how these idle periods propagate from one process to another. It is important to understand idle period propagation in Message Passing applications as it allows application...
The generalized multiframe task model (GMF) extends the sporadic task model and multiframe task model. Each frame in the GMF model contains an execution time, a relative deadline, and a minimum inter-arrival time. These parameters are fixed after task specification time in the GMF model. However, multimedia and adaptive control systems may be overloaded and no longer stabilized when the task parameters...
Nekbone is a proxy application of Nek5000, a scalable Computational Fluid Dynamics (CFD) code used for modelling incompressible flows. The Nekbone mini-application is used by several international co-design centers to explore new concepts in computer science and to evaluate their performance. We present the design and implementation of a new communication kernel in the Nekbone mini-application with...
A novel visual attention model using multi-scale cues is presented in this paper. Visual data is decomposed into multi-scale sub-images which contain multi-scale details on the basis of Gaussian Pyramid, and contrast features are extracted from these multi-scale images for saliency map generation. Compared with other visual attention models, the proposed model can efficiently generate saliency map...
Authentication and encryption technology are the core components of the DRM (Digital Rights Management) system. In this paper, a security protocol basing on the identity-based signcryption scheme is proposed to implement these technologies simultaneously. According to the comparison with the PKI (public key infrastructure)-based DRM system, the advantages of this protocol are proved. However, in practice...
In this paper, we present a non-adaptive optimal plan that minimizes the mean search efforts based on the optimal search theory. A non-adaptive plan makes no use of the feedback generated by the search except the query object is found. In particular, we apply our search algorithm on PSB database to retrieve different classes of 3D models. Experiment results showed that the retrieval time to find the...
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