2,964 research outputs found

    Definition of avionics concepts for a heavy lift cargo vehicle, appendix A

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    The major objective of the study task was to define a cost effective, multiuser simulation, test, and demonstration facility to support the development of avionics systems for future space vehicles. This volume provides the results of the main simulation processor selection study and describes some proof-of-concept demonstrations for the avionics test bed facility

    Custom Integrated Circuits

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    Contains reports on nine research projects.Analog Devices, Inc.International Business Machines CorporationJoint Services Electronics Program Contract DAAL03-89-C-0001U.S. Air Force - Office of Scientific Research Contract AFOSR 86-0164BDuPont CorporationNational Science Foundation Grant MIP 88-14612U.S. Navy - Office of Naval Research Contract N00014-87-K-0825American Telephone and TelegraphDigital Equipment CorporationNational Science Foundation Grant MIP 88-5876

    Manticore: Hardware-Accelerated RTL Simulation with Static Bulk-Synchronous Parallelism

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    The demise of Moore's Law and Dennard Scaling has revived interest in specialized computer architectures and accelerators. Verification and testing of this hardware heavily uses cycle-accurate simulation of register-transfer-level (RTL) designs. The best software RTL simulators can simulate designs at 1--1000~kHz, i.e., more than three orders of magnitude slower than hardware. Faster simulation can increase productivity by speeding design iterations and permitting more exhaustive exploration. One possibility is to use parallelism as RTL exposes considerable fine-grain concurrency. However, state-of-the-art RTL simulators generally perform best when single-threaded since modern processors cannot effectively exploit fine-grain parallelism. This work presents Manticore: a parallel computer designed to accelerate RTL simulation. Manticore uses a static bulk-synchronous parallel (BSP) execution model to eliminate runtime synchronization barriers among many simple processors. Manticore relies entirely on its compiler to schedule resources and communication. Because RTL code is practically free of long divergent execution paths, static scheduling is feasible. Communication and synchronization no longer incur runtime overhead, enabling efficient fine-grain parallelism. Moreover, static scheduling dramatically simplifies the physical implementation, significantly increasing the potential parallelism on a chip. Our 225-core FPGA prototype running at 475 MHz outperforms a state-of-the-art RTL simulator on an Intel Xeon processor running at ≈\approx 3.3 GHz by up to 27.9×\times (geomean 5.3×\times) in nine Verilog benchmarks

    A Survey on Design Methodologies for Accelerating Deep Learning on Heterogeneous Architectures

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    In recent years, the field of Deep Learning has seen many disruptive and impactful advancements. Given the increasing complexity of deep neural networks, the need for efficient hardware accelerators has become more and more pressing to design heterogeneous HPC platforms. The design of Deep Learning accelerators requires a multidisciplinary approach, combining expertise from several areas, spanning from computer architecture to approximate computing, computational models, and machine learning algorithms. Several methodologies and tools have been proposed to design accelerators for Deep Learning, including hardware-software co-design approaches, high-level synthesis methods, specific customized compilers, and methodologies for design space exploration, modeling, and simulation. These methodologies aim to maximize the exploitable parallelism and minimize data movement to achieve high performance and energy efficiency. This survey provides a holistic review of the most influential design methodologies and EDA tools proposed in recent years to implement Deep Learning accelerators, offering the reader a wide perspective in this rapidly evolving field. In particular, this work complements the previous survey proposed by the same authors in [203], which focuses on Deep Learning hardware accelerators for heterogeneous HPC platforms

    Custom Integrated Circuits

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    Contains table of contents for Part III, table of contents for Section 1 and reports on eleven research projects.IBM CorporationMIT School of EngineeringNational Science Foundation Grant MIP 94-23221Defense Advanced Research Projects Agency/U.S. Army Intelligence Center Contract DABT63-94-C-0053Mitsubishi CorporationNational Science Foundation Young Investigator Award Fellowship MIP 92-58376Joint Industry Program on Offshore Structure AnalysisAnalog DevicesDefense Advanced Research Projects AgencyCadence Design SystemsMAFET ConsortiumConsortium for Superconducting ElectronicsNational Defense Science and Engineering Graduate FellowshipDigital Equipment CorporationMIT Lincoln LaboratorySemiconductor Research CorporationMultiuniversity Research IntiativeNational Science Foundatio
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