10,952 research outputs found
Layered architecture for quantum computing
We develop a layered quantum computer architecture, which is a systematic
framework for tackling the individual challenges of developing a quantum
computer while constructing a cohesive device design. We discuss many of the
prominent techniques for implementing circuit-model quantum computing and
introduce several new methods, with an emphasis on employing surface code
quantum error correction. In doing so, we propose a new quantum computer
architecture based on optical control of quantum dots. The timescales of
physical hardware operations and logical, error-corrected quantum gates differ
by several orders of magnitude. By dividing functionality into layers, we can
design and analyze subsystems independently, demonstrating the value of our
layered architectural approach. Using this concrete hardware platform, we
provide resource analysis for executing fault-tolerant quantum algorithms for
integer factoring and quantum simulation, finding that the quantum dot
architecture we study could solve such problems on the timescale of days.Comment: 27 pages, 20 figure
A Model of Layered Architectures
Architectural styles and patterns play an important role in software
engineering. One of the most known ones is the layered architecture style.
However, this style is usually only stated informally, which may cause problems
such as ambiguity, wrong conclusions, and difficulty when checking the
conformance of a system to the style. We address these problems by providing a
formal, denotational semantics of the layered architecture style. Mainly, we
present a sufficiently abstract and rigorous description of layered
architectures. Loosely speaking, a layered architecture consists of a hierarchy
of layers, in which services communicate via ports. A layer is modeled as a
relation between used and provided services, and layer composition is defined
by means of relational composition. Furthermore, we provide a formal definition
for the notions of syntactic and semantic dependency between the layers. We
show that these dependencies are not comparable in general. Moreover, we
identify sufficient conditions under which, in an intuitive sense which we make
precise in our treatment, the semantic dependency implies, is implied by, or
even coincides with the reflexive-transitive closure of the syntactic
dependency. Our results provide a technology-independent characterization of
the layered architecture style, which may be used by software architects to
ensure that a system is indeed built according to that style.Comment: In Proceedings FESCA 2015, arXiv:1503.0437
A Hybrid Three Layer Architecture for Fire Agent Management in Rescue Simulation Environment
This paper presents a new architecture called FAIS for imple- menting
intelligent agents cooperating in a special Multi Agent environ- ment, namely
the RoboCup Rescue Simulation System. This is a layered architecture which is
customized for solving fire extinguishing problem. Structural decision making
algorithms are combined with heuristic ones in this model, so it's a hybrid
architecture
On the Design of Ambient Intelligent Systems in the Context of Assistive Technologies
The design of Ambient Intelligent Systems (AISs) is discussed in the
context of assistive technologies. The main issues include ubiquitous communications,
context awareness, natural interactions and heterogeneity, which are
analyzed using some examples. A layered architecture is proposed for heterogeneous
sub-systems integration with three levels of interactions that may be
used as a framework to design assistive AISs.Ministerio de Ciencia y Tecnología TIC2001-1868-C0
Evolving the Modular Layered Architecture in Digital Innovation: The Case of the Car’s Instrument Cluster
Digital innovation entails the combining of digital and physical components to produce novel products. The materiality of digital artifacts, particularly the separation between their material and immaterial features, which is expressed through a layered architecture, lays the foundation for the generative potential of digital innovation. Gaining an understanding of the work involved in creating such a layered architecture and tracing the shifts in the material sub-stratum as physical products are digitalized provides insight into the organizational implications of digital innovation. To this end, we study the digitalization of the automobile by focusing on the evolution of a car manufacturer’s instrument cluster or Driver Information Module (DIM) from 2005 onwards. Based on laddering interviews with 20 people involved in the development of three increasingly digitized DIMs, this paper traces the progressive dissociation between the material and non-material aspects of digitalized artifacts and the organizational implications of evolving a modular layered architecture
Stochastic Modeling of Hybrid Cache Systems
In recent years, there is an increasing demand of big memory systems so to
perform large scale data analytics. Since DRAM memories are expensive, some
researchers are suggesting to use other memory systems such as non-volatile
memory (NVM) technology to build large-memory computing systems. However,
whether the NVM technology can be a viable alternative (either economically and
technically) to DRAM remains an open question. To answer this question, it is
important to consider how to design a memory system from a "system
perspective", that is, incorporating different performance characteristics and
price ratios from hybrid memory devices.
This paper presents an analytical model of a "hybrid page cache system" so to
understand the diverse design space and performance impact of a hybrid cache
system. We consider (1) various architectural choices, (2) design strategies,
and (3) configuration of different memory devices. Using this model, we provide
guidelines on how to design hybrid page cache to reach a good trade-off between
high system throughput (in I/O per sec or IOPS) and fast cache reactivity which
is defined by the time to fill the cache. We also show how one can configure
the DRAM capacity and NVM capacity under a fixed budget. We pick PCM as an
example for NVM and conduct numerical analysis. Our analysis indicates that
incorporating PCM in a page cache system significantly improves the system
performance, and it also shows larger benefit to allocate more PCM in page
cache in some cases. Besides, for the common setting of performance-price ratio
of PCM, "flat architecture" offers as a better choice, but "layered
architecture" outperforms if PCM write performance can be significantly
improved in the future.Comment: 14 pages; mascots 201
Architecture for Analysis of Streaming Data
While several attempts have been made to construct a scalable and flexible
architecture for analysis of streaming data, no general model to tackle this
task exists. Thus, our goal is to build a scalable and maintainable
architecture for performing analytics on streaming data.
To reach this goal, we introduce a 7-layered architecture consisting of
microservices and publish-subscribe software. Our study shows that this
architecture yields a good balance between scalability and maintainability due
to high cohesion and low coupling of the solution, as well as asynchronous
communication between the layers.
This architecture can help practitioners to improve their analytic solutions.
It is also of interest to academics, as it is a building block for a general
architecture for processing streaming data
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