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检索条件"任意字段=2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010"

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USAF MS support to aircraft/store compatibility, certification, and clearance: Status of dedicated high performance computing investment project

USAF MS support to aircraft/store compatibility, certificati...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Cureton, Chris W. Power, Greg D. Sisson Jr., William E. Eglin AFB FL United States Aerospace Testing Alliance-Arnold Engineering Development Center Arnold AFB TN United States

ISBN: (纸本)9780769543925

The US Air Force SEEK EAGLE Office (AFSEO) and the Arnold Engineering Development Center (AEDC) submitted a joint proposal to the high performance computing modernization program (hpcmp) for a Dedicated HPC Project Investments (DHPI) Project to support Aircraft/Store Compatibility, Certification, and Clearance beginning in FY09. As a result, the SGI ICE 8200 cluster was installed at AEDC in May 2009. Both AFSEO and AEDC have ported software with the latest monthly utilization topping 80. Applications include time-accurate store separation simulations, modeling of facilities used for store separation testing, and investigation of the flow in the vicinity of flight test instrumentation. The hardware is also supporting the development of the next-generation software for fixed-wing store separation simulations as part of the Computational Research and Engineering Acquisition Tools and Environment-Air Vehicle (CREATE-AV) program and the Institute for HPC Air Armament Applications. This DHPI increases the combat capability, and reduces the acquisition cost and risk for current and future weapons systems of multiple services and agencies by providing time-critical numerical solutions in conjunction with US Air Force testing. © 2011 IEEE.

关键词： Fixed wings

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high-fidelity computations for flexible micro air vehicle applications

High-fidelity computations for flexible micro air vehicle ap...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Gordnier, Raymond E. Visbal, Miguel R. Garmann, Daniel Wright-Patterson AFB OH United States

ISBN: (纸本)9780769543925

Implicit large-eddy simulation (ILES) computations have been performed for canonical problems associated with flexible, flapping-wing micro air vehicles (MAVs). This computationally-intensive approach, which is able to directly model laminar/transitional/turbulent flow fields, requires the use of the best high performance computational platforms available. Results for the direct numerical simulation of the deep dynamic stall phenomenon over a rigid plunging airfoil section at transitional Reynolds numbers relevant to MAV systems are presented. Next, computations for two different flexible-wing geometries, a membrane-wing section and a three-dimensional, flexible-wing with an NACA0012 cross-section, are discussed. Finally, to investigate the relevant physics associated with a perching maneuver, computational results for a pitch, hold and return motion are examined. All computed results show good correlation with corresponding experimental measurements. © 2011 IEEE.

关键词： Reynolds number

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Implementation of the joint analysis system on TOW to enhance dod analysis performance

Implementation of the joint analysis system on TOW to enhanc...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Al, Sweetser Barnes, Boots Melim, Peter Bouwens, Christina Pratt, David Washington DC United States PET FMS On-Site Orlando FL United States

ISBN: (纸本)9780769543925

The Joint Analysis System (JAS) is a multi-sided, joint campaign-level simulation used by the Office of the Secretary of Defense/Director of Cost Assessment and program Evaluation (OSD/CAPE) Simulation and Analysis Center (SAC) for theater-level strategic analysis to support and assist Department of Defense (dod) decision-making. The need for a higher execution speed for JAS (400 times real-time) combined with a desire for the shortest possible time-to-solution has led to the application of high performance computers (HPCs) to support the JAS program goals. Previous work with JAS [previously called the Joint War fighting System (JWARS)] explored the viability of parallel execution of computationally-intensive simulation processes to shorten execution times. Further work was performed to port the "back-end" simulation code to the Linux® (Linus Torvalds) environment to take advantage of Linux-based HPC assets. Capabilities developed as part of the parallel processing effort are part of the JAS technical library, and the Linux porting is now part of baseline code. The US Army Research Laboratory (ARL) dod Supercomputing Resource Center (DSRC) has recently added a 6,656 core SGI Altix® ICE 8200 system (called TOW) to its toolset. This new system offers the SAC an opportunity to further utilize the processing capabilities offered by HPCs. The focus of this paper is to discuss the challenges and lessons learned in adapting JAS for use on TOW. © 2011 IEEE.

关键词： Linux

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Collaborative software development of scalable dod computational engineering

Collaborative software development of scalable DoD computati...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Atwood, Christopher A. Adamec, Stephen Post, Douglass Handley-Blair, Luanne Murphy, Maria Scaled Numerical Physics LLC United States AMEWAS California MD United States Lorton VA United States Kihei HI United States

ISBN: (纸本)9780769543925

The Computational Research and Engineering Acquisition Tools and Environments (CREATE) program is charged with positively impacting the US Department of Defense (dod) Acquisition Process via Computational Engineering for capability gaps identified by the CREATE Boards of Directors. These prioritized requirements have been characterized and are annually reconciled in terms of gaps associated with required analysis cycle-times, physical accuracy, and necessary analysis capabilities. Furthermore, the Office of the Secretary of Defense(OSD) Overarching Integrated Product Team (OIPT) has provided goals which drive the usage of CREATE software by dod Acquisition programs. In order to achieve these usage targets, the CREATE program has established a governance model and thence a hosted set of services to enhance collaboration among the developer teams and the targeted Acquisition program (AP) subject matter experts. The goals of these collaboration services are to: 1) scale and speed the feedback amongst the CREATE and AP teams, while 2) minimizing interruption to developer and user workflows. Towards these goals, the community services have been architected as discussion forums, issue tracking, and documentation. Such services are now common place in the enterprise and open-source software projects, and efficiently scale with the user community by enabling a searchable knowledge base. In addition, owing to the key capabilities of this dod software, CREATE requires authenticated and authorized access for each member of the community. This paper summarizes the governance model and process by which the services were selected, the architecture implemented, and the challenges going forward. © 2011 IEEE.

关键词： Open source software

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highlights of the CREATE program

Highlights of the CREATE program

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Post, Douglass E. Lorton VA United States

ISBN: (纸本)9780769543925

The Computational Research and Engineering Acquisition Tools and Environments (CREATE) program was established as a new 12-year program in FY 2008 by the Department of Defense (dod). The CREATE goal is to enable major improvements in dod's acquisition engineering design and analysis processes by developing and deploying scalable, multi-disciplinary, physics-based computational engineering software products for the design and analysis of dod Ships, Air Vehicles, and Radio Frequency Antennas. Meshing and Geometry (MG) generation is being provided by a fourth project, MG. CREATE is a multi-institutional, multi-service, multi-agency and multi-disciplinary program with participation by the Navy, Air Force, Army, the Office of the Secretary of Defense, industry, and academia. The CREATE products are being developed and released on an annual cycle. In 2010, the program released five new products: SENTRI 1.0-RF antenna design;NESM 0.1-Ship Shock Analysis;IHDE 1.0-Ship Hydrodynamic Design and Analysis;Kestrel 1.0-Fixed-wing air vehicle analysis;and Helios 1.0-Rotorcraft analysis. Enhanced versions of these products will be released every year starting in 2011. In 2011, five additional products will begin annual releases: DaVinci-a tool for the rapid physics-based design of air vehicles;RDI-an integrated suite of tools to enable rapid physics-based design of naval ships;Firebolt-components to provide models for gas turbine propulsion systems for Kestrel and Helios;NavyFoam-a high-fidelity hydrodynamics analysis tool for predicting drag and resistance, sea-keeping and seaway loads;and Capstone-components to enable the generation of geometries and meshes for all of the other products. The CREATE products are designed to be modular, maintainable, extensible, and scalable. To accomplish this, the CREATE team1 has developed a set of software engineering and software project management practices and processes that strike the appropriate balance between the agility and flexibility,

关键词： Product design

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Hybrid optimization schemes for global optimization: Wing modeling of micro-aerial vehicles

Hybrid optimization schemes for global optimization: Wing mo...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Velázquez, Leticia Argáez, Miguel Sanchez, Reinaldo Ramirez, Carlos Hernandez, Miguel Culbreth, Matt Jameson, Antony Program in Computational Science University of Texas at El Paso El Paso TX United States Department of Aerospace Engineering Stanford University Palo Alto CA United States

ISBN: (纸本)9780769543925

In this paper, we present a parallel hybrid algorithm for solving global optimization problems that is based on the coupling of a stochastic global (Simultaneous-Perturbation Stochastic Approximation, Simulated Annealing, Genetic Algorithms) and a local method (Newton-Krylov Interior-Point) via a surrogate model. There exist several algorithms for finding approximate global solutions, but our technique will further guarantee that such solutions satisfy physical bounds of the problem. First, the Simultaneous-Perturbation Stochastic Approximation (SPSA) algorithm conjectures regions where a global solution may exist. Next, some data points from the regions are selected to generate a continuously differentiable surrogate model that approximates the original function. Finally, the Newton-Krylov Interior-Point (NKIP) algorithm is applied to the surrogate model subject to bound constraints for obtaining a feasible approximate global solution. The hybrid optimization code is being applied to Stanford's UFLO Computational Fluid Dynamics (CFD) code. This code is used by the US Army high performance computing Research Center (AHPCRC) to develop flapping-and twisting-wing models for Micro Aerial Vehicles (MAV), hummingbird-sized airborne vehicles that can be used for sensing and surveillance. We present some preliminary numerical results of the large-scale high performance computing (HPC) hybrid optimization C code that is being run on the Department of Defense MANA machine from Maui, Hawaii. © 2011 IEEE.

关键词： Global optimization

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Parallelization of a vector-optimized 3-D flow solver for multi-core node clusters

Parallelization of a vector-optimized 3-D flow solver for mu...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Robins, Robert E. Jost, Gabriele North West Research Associates Inc. Bellevue WA United States Texas Advanced Computing Center University of Texas Austin TX United States

ISBN: (纸本)9780769543925

In this paper, we describe the development of a parallel version of the IR3D (Incompressible Realistic 3-D) code, which simulates the environmental effects on the evolution of vortices trailing behind control surfaces of underwater vehicles. The objective of the project was to parallelize and optimize the existing implementation for clusters of multi-core nodes. The primary motivation was to reduce turnaround time and add the capability to handle large problem sizes. Furthermore we were aiming for portability and scalability. The code solves the 3D Boussinesq equations for incompressible fluids. Fast-Fourier transforms (FFTs) are used for the calculation of horizontal derivatives and a higher-order compact finite difference scheme is used for vertical derivatives. To ensure incompressibility, the code employs a projection method for which we developed a new Poisson Solver. This solver works by computing 2D FFTs in horizontal-planes, numerically solving the resulting ordinary differential equations (ODEs) for Fourier coefficients, and then doing Fourier inversion. Parallelization is based on the Message Passing Interface (MPI) programming paradigm. We present performance and scalability results of PIR3D (Parallel IR3D) on a variety of hardware platforms and discuss methods for further optimization by exploiting additional by exploiting additional levels of parallelism. © 2011 IEEE.

关键词： Message passing

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A common computational science environment for high performance computing centers

A common computational science environment for high performa...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Clarke, Jerry Vines, John Kirk, Kelly Mark, Eric Angelini, Rick Spear, Carrie Waisbrot, Nathaniel Martin, Joel Leiter, Ken Hoffman, Bill Aberdeen Proving Ground MD United States Lockheed Martin/ARL Aberdeen Proving Ground MD United States Kitware Inc. Clifton Park NY United States

ISBN: (纸本)9780769543925

The Computational Sciences Environment (CSE) was developed to provide a standard development platform for data analysis, visualization, and software testing and evaluation. The Classified Data Analysis and Assessment Center (CDAAC), in conjunction with the Computational Sciences and Engineering Branch (CSEB) of the Army Research Laboratory, assembled a set of open source data analysis tools and applications, software management and testing tools, and libraries necessary to run the tools;and made them available as a package called CSE. CSE also provides experimental software builds for users who might need newer features than what is currently available in the release package. The CSE team provides support for developers, the end-user, and distributed development teams. Tests are regularly run on the software, both current and release, and the results are submitted to quality dashboards for review using CTest. CTest is part of an open-source software building tool called CMake. Developers can use CSE as a template and can customize it to meet their specific project goals. CSE provides developers with a common tool set to assist in developing portable high performance computing (HPC) Applications. Development of CSE has been managed through an open-source project management application that provides Software Configuration Management (SCM) integration of the CSE repository, informational wikis, bug tracking, and feature requests. To support distributed development teams, CSE provides project management tools, software repositories, SCM, and online software quality dashboards. © 2011 IEEE.

关键词： Software testing

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Mapping hierarchical multiple file VHDL kernels onto an SRC-7 high performance reconfigurable computer

Mapping hierarchical multiple file VHDL kernels onto an SRC-...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Morris, Gerald R. Abed, Khalid H. Vicksburg MS United States Department of Computer Engineering Jackson State University Jackson MS United States

ISBN: (纸本)9780769543925

The increasing computational requirements of today's software systems have led researchers to investigate ways of accelerating military and scientific computing applications. Contemporary field programmable gate arrays (FPGAs) are now equipped with multimillion gate logic fabrics, faster clock rates, reasonably large on-chip memory, and fast I/O resources for off-chip communication. The use of FPGAs as reconfigurable computational units complementing a fixed computational device such as a general-purpose processor (GPP) is the basic idea behind what are known as high performance reconfigurable computers (HPRCs). These exciting architectures allow development of reconfigurable processors that target the computationally intensive parts of a given application. Ideally, one should use a high-level language (HLL) rather than a hardware description language (HDL) to implement HPRC-based applications. However, in order to accelerate some applications, an HDL must be used to design computational kernels. The HPRC used in the joint research project between the U.S. Army Engineer Research and Development Center {dod Supercomputing} Resource Center (ERDC DSRC) and Jackson State University (JSU) employs the SRC Computers' Carte development environment. Carte allows application development using a conventional HLL, an HLL-to-HDL compiler, and custom-built VHDL-based kernels ("user macros" in SRC parlance). Currently, the off-the-shelf Carte mechanism for incorporating user macros does not directly support the common case of a multiple file VHDL hierarchy. This research explores a novel approach that allows multiple file VHDL kernels to be mapped onto the SRC-7 HPRC. The approach facilitates the development of FPGA-based elements via a hybrid technique that uses the Carte HLL-to-HDL compiler in conjunction with multiple file VHDL-based user macros. This paper describes the use of this novel approach to map a parameterized, parallelized, and pipelined FPGA-based sparse matrix vect

关键词： Computer hardware description languages

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Properties of high-performance capacitor materials and nanoscale electronic devices

Properties of high-performance capacitor materials and nanos...

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2010 dod high performance computing modernization program users group conference, hpcmp ugc 2010

作者： Bernholc, J. Ranjan, V. Zheng, X.H. Jiang, J. Lu, W. Abtew, T.A. Boguslawski, P. Nardelli, M. Buongiorno Lu, W. Meunier, V. Center for High Performance Simulation Department of Physics North Carolina State University Raleigh NC United States Computer Science and Mathematics Division Oak Ridge National Laboratory Oak Ridge TN United States

ISBN: (纸本)9780769543925

Recent advances in theoretical methods combined with the advent of massively parallel supercomputers allow one to reliably simulate the properties of complex materials and device structures from first principles. We describe applications in two general areas: i) novel polymer composites for ultra-high-density capacitors, necessary for pulsed-power applications, such as electric rail guns, power conditioning, and dense electronic circuitry, and ii) electronic properties in nanoelectronic devices, such as graphene nanoribbons and C60-based devices. For capacitor materials, polyvinylidene fluoride (PVDF) with a small concentration of chlorotrifluoroethylene (CTFE) has been observed to store very high energy as compared to currently used polymers. We have recently suggested that the ultra-high energy storage is due to an electric-field-induced phase transition from the non-polar a to the polar b-PVDF. We have now extended our investigations to multi-component polymers and also to the initial stages of kinetics. Turning to nanoelectronic materials, we show that devices based on two C60 molecules can display negative differential resistance at low voltages. We also explore the electronic structure and spin polarization of nitrogen-doped carbon nanoribbons, which are candidate materials for ultra-high-speed nanodevices. We find enhanced N segregation in zigzag nanoribbons, due to interplay between impurity states in the valence bands and the edge states. Spin distribution is significantly affected, even at edges that are quite far from the dopant. We also find that the three armchair nanoribbons (ARs) families, defined by mod (n, 3), behave differently in doping. © 2011 IEEE.

关键词： Doping (additives)

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