Heterogeneous Operating Systems Research Articles

Snapshot for Power Grids IoT: Adaptive Measurement for Resilience Intelligent Internet of Things

With the wide application of Internet of Things (IoT) devices in the power grids, the sophisticated feedback on their operating status is of great significance for improving efficiency and reducing accidents. For exquisite management of the resilient intelligent IoT with flexible increase and decrease of devices and heterogeneous operating systems, this paper proposes an adaptive measurement method ’MRAM’, which can snapshot the multidimensional resource view (MRV) of all devices in the jurisdiction. Extensible gateway platform based on CPU, FPGA and cloud computing is applied in MRAM, which liberates the local resources of monitored IoT devices. MRAM improves the LSTM algorithm called ELSTM. ELSTM can accommodate the current IoT devices’ state for detecting the mutation of MRV. The newly collected resources determined by ELSTM whether MRAM enters an abnormal state to drive the adaptive measurement state machine. According to the state machine which endeavors that the MRV is updated timely, MRAM adjusts the measurement granularity in real time. Simulations and experiments have tested the convergence time and occupied bandwidth of MRAM deployed in power grids. These evaluations confirmed MRAM’s practicality and robustness, as well as the MRV is genuine management data for the upper-layer power grids applications. A real environment is built to test the performance of this method as well. MRAM has high measurement accuracy and the precision of mutation detection is 98.41%. It converges the update MRV of second level under the condition of IoT devices and the cloud’s low consumption of memory and CPU utilization.

A Survey of Mobile Device Virtualization

Recent growth in the processing and memory resources of mobile devices has fueled research within the field of mobile virtualization. Mobile virtualization enables multiple persona on a single mobile device by hosting heterogeneous operating systems (OSs) concurrently. However, adding a virtualization layer to resource-constrained mobile devices with real-time requirements can lead to intolerable performance overheads. Hardware virtualization extensions that support efficient virtualization have been incorporated in recent mobile processors. Prior to hardware virtualization extensions, virtualization techniques that are enabled by performance prohibitive and resource consuming software were adopted for mobile devices. Moreover, mobile virtualization solutions lack standard procedures for device component sharing and interfacing between multiple OSSs. The objective of this article is to survey software- and hardware-based mobile virtualization techniques in light of the recent advancements fueled by the hardware support for mobile virtualization. Challenges and issues faced in virtualization of CPU, memory, I/O, interrupt, and network interfaces are highlighted. Moreover, various performance parameters are presented in a detailed comparative analysis to quantify the efficiency of mobile virtualization techniques and solutions.

다중 코어 기반의 실시간 가상화 시스템을 위한 이종 운영체제 통합 성능 분석 방법에 관한 연구

This paper describes a method that is integrated trace for real-time virtualization environment. This method has solved the problem that the performance trace may not be able to analyze integrated method between heterogeneous operating systems which is consists of real-time operating systems and general-purpose operating system. In order to solve this problem, we have attempted to reuse the performance analysis function in general-purpose operating system, thereby real-time operating systems can be analyzed along with general-operating system. Furthermore, we have implemented a prototype based on ARM Cortex-A15 dual-core processor. By using this integrated trace method, real-time system developers can be improved productivity and reliability of results on real-time virtualization environment.

High-performance emulation of heterogeneous systems using adaptive time dilation

Building a testbed for evaluating the performance of large-scale heterogeneous systems can be costly and inefficient. Emulation is often used to evaluate the performance of a system in a controlled environment. Time dilation allows virtual machines (VMs) to emulate higher performance than that of their physical machine. We present an approach using adaptive time dilation to emulate large-scale distributed systems composed of heterogeneous machines and Operating Systems (OSs). In our implementation, VMs are globally synchronized. To evaluate our system, distributed VMs running Linux, Windows, FreeBSD, and Junos are emulated on general-purpose physical machines.

Wireless Network Based Image Transmission between Heterogeneous Operating System

This paper presents the video image acquisition, transmission and display using wireless Internet network between two heterogeneous operating systems. First of all, the design of video acquisition system is designed. Based on V4L2 standard, the video acquisition program is devised. Secondly, by using the method of network programming, the design of network communication is completed based on TCP socket. Finally, based on OpenCV database, the image display interface is realized using MFC technology. The experiment shows that the designed system can realize image transmission between two different operating systems.

Research on Public Data Exchange Platform of OA System Based on XML

OA system widely used in government agencies, large enterprises and institutions. For data exchange between different application systems, the use of XML technology research public data exchange platform. First, the logical structure of public data exchange to achieve data exchange between application system, heterogeneous operating systems and databases; Then study XML data exchange, including the basics of XML, XML data exchange technical advantages, using XML processing data ways etc. Finally, study data exchange platform, XML data exchange technology makes data exchange simple and convenient. The content of this paper, to facilitate the development of data exchange between different systems, speed the development process, improve data reuse, reduce development costs, easy maintenance advantages.

Developments of next generation monitor and control systems for radio telescopes

As part of the ongoing upgrade of the GMRT observatory, the monitor and control (M&C) system is being upgraded to a modern specification driven system. The basic building block of the proposed M&C framework is a SACE node which provides command, response and event data streaming interfaces to the child and parent nodes running locally or remotely in a heterogeneous operating system environment. A prototype M&C system formed by hierarchically composing SACE nodes at different levels has been successfully tested at the GMRT. For the recently built 15m antenna at NCRA, a generic, web based M&C system has been developed which allows remote, authenticated operation. We discuss issues relevant to the development of the next generation M&C systems for radio telescopes using the lessons learned from these two systems. We also summarize flexible, reusable and cost-effective approaches using off the shelf packages and technologies used in generic frameworks, which can contribute to form the basis for M&C systems of very large radio telescopes like the SKA.

Design and Implementation of a Voice Broadcasting System from a PC to Mobile Devices

Mobile technology is rapidly developed, this developing leads the production of the multimedia smartphone that supports wireless LAN (WLAN) that are widely deployed because of its ease of use, flexibility, sharing application and support for multimedia transmission. In this paper, a system was designed and implemented to stream audio from the computer and displayed it on the smartphone model using the (Client Server) model. This work deals with real-time audio, using real-time streaming protocol (RTSP), the proposed work has achieved success of sending voice over the wireless network environments via heterogeneous operating system, Linux and Android.

A distributed genetic algorithm for restoration of vertical line scratches

This paper reports a distributed algorithm for the restoration of still frames corrupted by vertical line scratches. The restoration is here approached as an optimisation problem, and is solved using an ad-hoc Genetic Algorithm. The distributed algorithm is designed following a pipeline logical structure. The front end is a network of standard workstations with heterogeneous operating systems. The quality of image is appreciable and the computational time is quite low with respect the sequential version.

Brief Analysis on Application of the Heterogeneous Cluster Operating System in the Digital Library

Brief Analysis on Application of the Heterogeneous Cluster Operating System in the Digital Library

First steps towards an interoperable GIS — an example from Southern Lower Saxony —

In geosciences the necessity of combining geological and geophysical information as well as applying tools for designing 3D geological and geophysical models is well accepted. Nevertheless, in most cases this demand is only put into practice by file transfer between the applications. The creation of a common 3D model is complicated by the inflexible handling of new and reinterpreted data and by changing applications, heterogeneous operating systems and/or hardware platforms. We present a new approach for a component based GIS which is coupled with an object oriented database management system. The original data, as well as the derived data and the 3D models, are stored in the extensible database. Geological and geophysical 3D modeling tools have direct access to the database via the Common Object Request Broker Architecture (COREA). By this means, we obtained both the integration of the software components and independence from changing software applications and changing platforms, finally resulting in an interoperable 3D GIS.

Transparent remote execution in LAHNOS by means of a neural network device

LAHNOS is a Local Area Heterogeneous Operating System [1] being currently developed at the Universidad Nacional de San Luis over which distributed services are to be built. This paper shows some enhancements to be introduced into the original design in order to achieve automatic allocation of remote execution requests to the best fitted node under some chosen performance criteria.Following current trends in Distributed Systems we propose the insertion of a neural network device into the kernel of LAHNOS to reflect a selected allocation policy to provide improved system performance as long as to release the user of some cumbersome decisions.

Naming in the distributed operating system ZGL

In this paper, the naming scheme used in the heterogeneous distributed operating system ZGL is described and some of the representative techniques utilized in current distributed operating systems are examined. It is believed that the partitioning of the name space into many local name spaces and one global shared name space allows the ZGL system to satisfy each workstation's demand for local autonomy and still be able to facilitate transparent resource sharing. By the division of the system into clusters and the use of a combined centralized distributed naming mechanism, the system is able to avoid both the bottleneck problem caused by a single centralized name server for the whole system and the per formance degradation due to a full distributed scheme.