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Full-Text Articles in Physical Sciences and Mathematics
Performance Evaluation Of The Kvm Hypervisor Running On Arm-Based Single-Board Computers, Eric Gamess, Mausam Parajuli, Syed Shah
Performance Evaluation Of The Kvm Hypervisor Running On Arm-Based Single-Board Computers, Eric Gamess, Mausam Parajuli, Syed Shah
Research, Publications & Creative Work
Single-Board Computers (SBCs) were initially targeted for education and small projects with low power-processing needs. However, their computational power has increased dramatically in the last few years, and they are now used in more advanced developments. In this paper, a study of the feasibility of using ARM-based SBCs as hypervisors is done. The authors selected the Raspberry Pi 4 Model B and the ODROID-N2+ and assessed them as virtualization servers, when running up to four VMs simultaneously, with the Linux de facto hypervisor (KVM). The tests performed in this work include: reading and writing throughputs in different types of storage …
Performance Evaluation Of Hybrid Coding Of Images Using Wavelet Transform And Predictive Coding, S. R. Subramanya, Chaman Sabharwal
Performance Evaluation Of Hybrid Coding Of Images Using Wavelet Transform And Predictive Coding, S. R. Subramanya, Chaman Sabharwal
Computer Science Faculty Research & Creative Works
Image compression techniques are necessary for the storage of huge amounts of digital images using reasonable amounts of space, and for their transmission with limited bandwidth. Several techniques such as predictive coding, transform coding, subband coding, wavelet coding, and vector quantization have been used in image coding. While each technique has some advantages, most practical systems use hybrid techniques which incorporate more than one scheme. They combine the advantages of the individual schemes and enhance the coding effectiveness. This paper proposes and evaluates a hybrid coding scheme for images using wavelet transforms and predictive coding. The performance evaluation is done …
Hga: A Hardware-Based Genetic Algorithm, Stephen D. Scott, Ashok Samal, Sharad C. Seth
Hga: A Hardware-Based Genetic Algorithm, Stephen D. Scott, Ashok Samal, Sharad C. Seth
CSE Conference and Workshop Papers
A genetic algorithm (GA) is a robust problem-solving method based on natural selection. Hardware's speed advantage and its ability to parallelize offer great rewards to genetic algorithms. Speedups of 1-3 orders of magnitude have been observed when frequently used software routines were implemented in hardware by way of reprogrammable field-programmable gate arrays (FPGAs). Reprogrammability is essential in a general-purpose GA engine because certain GA modules require changeability (e.g. the function to be optimized by the GA). Thus a hardware-based GA is both feasible and desirable. A fully functional hardware-based genetic algorithm (the HGA) is presented here as a proof-of-concept system. …
Semi-Distributed Load Balancing For Massively Parallel Multicomputer Systems, Ishfaq Ahmad, Arif Ghafoor
Semi-Distributed Load Balancing For Massively Parallel Multicomputer Systems, Ishfaq Ahmad, Arif Ghafoor
Electrical Engineering and Computer Science - Technical Reports
This paper presents a semi-distributed approach, for load balancing in large parallel and distributed systems, which is different from the conventional centralized and fully distributed approaches. The proposed strategy uses a two-level hierarchical control by partitioning the interconnection structure of a distributed or multiprocessor system into independent symmetric regions (spheres) centered at some control points. The central points, called schedulers, optimally schedule tasks within their spheres and maintain state information with low overhead. We consider interconnection structures belonging to a number of families of distance transitive graphs for evaluation, and using their algebraic characteristics, show that identification of spheres and …
Fault-Tolerant Load Management For Real-Time Distributed Computer Systems, Arif Ghafoor, Ishfaq Ahmad
Fault-Tolerant Load Management For Real-Time Distributed Computer Systems, Arif Ghafoor, Ishfaq Ahmad
Electrical Engineering and Computer Science - Technical Reports
This paper presents a fault-tolerant scheme applicable to any decentralized load balancing algorithms used in soft real-time distributed systems. Using the theory of distance-transitive graphs for representing topologies of these systems, the proposed strategy partitions these systems into independent symmetric regions (spheres) centered at some control points. These central points, called fault-control points, provide a two-level task redundancy and efficiently re-distribute the load of failed nodes within their spheres. Using the algebraic characteristics of these topologies, it is shown that the identification of spheres and fault-control points is, in general, is an NP-complete problem. An efficient solution for this problem …