skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Coordinated Multi-layer Multi-domain Optical Network (COMMON) for Large-Scale Science Applications (COMMON)

Abstract

We intend to implement a Coordinated Multi-layer Multi-domain Optical Network (COMMON) Framework for Large-scale Science Applications. In the COMMON project, specific problems to be addressed include 1) anycast/multicast/manycast request provisioning, 2) deployable OSCARS enhancements, 3) multi-layer, multi-domain quality of service (QoS), and 4) multi-layer, multidomain path survivability. In what follows, we outline the progress in the above categories (Year 1, 2, and 3 deliverables).

Authors:
 [1]
  1. University of Massachusetts
Publication Date:
Research Org.:
University of Massachusetts Dartmouth
Sponsoring Org.:
USDOE
OSTI Identifier:
1140151
Report Number(s):
Final Project Report
DOE Contract Number:
SC0004909
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Vokkarane, Vinod. Coordinated Multi-layer Multi-domain Optical Network (COMMON) for Large-Scale Science Applications (COMMON). United States: N. p., 2013. Web. doi:10.2172/1140151.
Vokkarane, Vinod. Coordinated Multi-layer Multi-domain Optical Network (COMMON) for Large-Scale Science Applications (COMMON). United States. doi:10.2172/1140151.
Vokkarane, Vinod. 2013. "Coordinated Multi-layer Multi-domain Optical Network (COMMON) for Large-Scale Science Applications (COMMON)". United States. doi:10.2172/1140151. https://www.osti.gov/servlets/purl/1140151.
@article{osti_1140151,
title = {Coordinated Multi-layer Multi-domain Optical Network (COMMON) for Large-Scale Science Applications (COMMON)},
author = {Vokkarane, Vinod},
abstractNote = {We intend to implement a Coordinated Multi-layer Multi-domain Optical Network (COMMON) Framework for Large-scale Science Applications. In the COMMON project, specific problems to be addressed include 1) anycast/multicast/manycast request provisioning, 2) deployable OSCARS enhancements, 3) multi-layer, multi-domain quality of service (QoS), and 4) multi-layer, multidomain path survivability. In what follows, we outline the progress in the above categories (Year 1, 2, and 3 deliverables).},
doi = {10.2172/1140151},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2013,
month = 9
}

Technical Report:

Save / Share:
  • This final project report describes the accomplishments, products and publications from the award. It includes the overview of the project goals to devise a framework for managing resources in multi-domain, multi-layer networks, as well the details of the mathematical problem formulation and the description of the prototype built to prove the concept.
  • The development of a liquid phase epitaxial process capable of yielding GaAlAs-GaAs multiple layer structures from which efficient lasers can be fabricated is discussed. The furnace facility is described in detail and the development of the LPE process is described. The application of various LPE processes to the growth of both large optical cavity and symmetrical optical cavity lasers is presented. Data is shown which depicts performance characteristics and emission patterns for the resultant devices.
  • When major electric power systems are interconnected through ties of relatively small capacity, low frequency intersystem oscillations are likely to be troublesome for some operating conditions. Spontaneous intersytem oscillations which have occurred in the western and some midwestern states attest to this aspect of system behavior. The long distances which separate concentrations of generating capacity in those systems also separate many individual generating plants from other machines, so that localized poorly damped higher frequency modes of oscillation also exist. The potential for unstable oscillations must be considered in planning the bulk generation and transmission system, in designing control systems formore » turbine-generators and dc line terminals, and in system operations. Present practice depends almost entirely on time domain simulation for large system analysis, with computing costs that are relatively high and information in a form which is often not well suited to study purposes. The objective of this research is to develop an alternative to time domain simulation for damping studies. This alternative involves the use of a linearized system model and the calculation of only those system natural frequencies of oscillation and damping factors that are most intimately related to generator rotor motions.« less
  • Mathematical models and computing methods for determining the natural freqencies and damping of generator rotor oscillations in large electric power systems are described. These models and methods provide the basis for estimating those eigenvalues most intimately related to rotor motion. The principal computational problem is the calculation of incremental voltage oscillations in a linear system model subjected to an external forcing function. This linear system model is derived from networks and generator representations employed in conventional time domain stability calculations. Methods of calculating voltages using this model are discussed. The use of these voltages in an iterative process to estimatemore » eigenvalues is explained.« less
  • Parallelism for gray participating media radiation heat transfer may be placed in two primary categories: spatial and angular domain-based parallelism. Angular, e.g., ray based, decomposition has received the greatest attention in the open literature for moderate sized applications where the entire geometry may be placed on processor. Angular based decomposition is limited, however, for large scale applications (O(10{sup 6}) to O(10{sup 8}) computational cells) given the memory required to store computational grids of this size on each processor. Therefore, the objective of this work is to examine the application of spatial domain-based parallelism to large scale, three-dimensional, participating-media radiation transportmore » calculations using a massively parallel supercomputer architecture. Both scaled and fixed problem size efficiencies are presented for an application of the Discrete Ordinate method to a three dimensional, non-scattering radiative transport application with nonuniform absorptivity. The data presented shows that the spatial domain-based decomposition paradigm results in some degradation in the parallel efficiency but provides useful speedup for large computational grids.« less