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Complexity of small silicon self-interstitial defects.
- D. Richie, Jeongnim Kim, S. Barr, K. Hazzard, R. Hennig, J. Wilkins
- Materials SciencePhysical review letters
- 28 January 2004
A new, spatially extended tri-interstitial ground state structure is identified as a probable nucleation site for larger extended defects and may be key for the compact-to-extended transition.
Threaded MPI programming model for the Epiphany RISC array processor
Exploring New Architectures in Accelerating CFD for Air Force Applications
- J. Dongarra, G. Peterson, S. Tomov, J. Allred, V. Natoli, D. Richie
- Computer ScienceDoD HPCMP Users Group Conference
- 14 July 2008
This paper addresses some main issues in this transition of multi/many-core microprocessor design trends and presents ideas on using the new architectures to accelerate CFD applications that are of interest to the air force.
Parallel Programming Model for the Epiphany Many-Core Coprocessor Using Threaded MPI
This paper demonstrates an efficient parallel programming model for the Epiphany architecture based on the Message Passing Interface (MPI) standard that enables MPI codes to execute on the RISC array processor with little modification and achieve high performance.
OpenCL + OpenSHMEM Hybrid Programming Model for the Adapteva Epiphany Architecture
A hybrid OpenCL + OpenSHMEM programming model for device-level programming for architectures like the Adapteva Epiphany many-core RISC array processor is presented and it is demonstrated that the hybrid model addresses the deficiencies of using OpenCL alone to achieve good benchmark performance.
Implementing Image Processing Algorithms for the Epiphany Many-Core Coprocessor with Threaded MPI
A threaded MPI programming model is applied for image processing kernels including a 2D Fast Fourier Transform with high-pass filter for edge detection; local operators for Gaussian image smoothing; and a Sobel filter, Canny edge detection, and Harris corner detection operations.
Ray-Tracing-Based Geospatial Optimization for Heterogeneous Architectures Enhancing Situational Awareness
- D. Richie, J. Ross, S. Park, D. Shires
- Computer ScienceIEEE 16th International Conference on…
- 3 December 2013
Algorithms for calculating line-of-sight ballistic threat, visual observability, ground plane extraction, and Markov chain Monte Carlo optimization provide an augmented geospatial intelligence and situational awareness in three-dimensional urban environments.
An OpenSHMEM Implementation for the Adapteva Epiphany Coprocessor
The implementation and performance evaluation of the OpenSHMEM 1.3 specification for the Adapteva Epiphany architecture within the Parallella single-board computer shows that the physical topology and memory-mapped capabilities of the core and network translate well to Partitioned Global Address Space (PGAS) programming models and SPMD execution with SHMEM.
Implementing OpenSHMEM for the Adapteva Epiphany RISC Array Processor
Hybrid Core Acceleration of UWB SIRE Radar Signal Processing
- S. Park, J. Ross, D. Shires, D. Richie, B. Henz, L. Nguyen
- Computer ScienceIEEE Transactions on Parallel and Distributed…
A synchronous impulse reconstruction radar imaging algorithm that has been designed for hybrid CPU-GPU processing is described and the speedup achieved is reported that allowed us to take a code once restricted to postprocessing and transform it into one that exceeds real-time performance requirements.