Download or read book A Parallel Rendering Algorithm for MIMD Architectures written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-28 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications such as animation and scientific visualization demand high performance rendering of complex three dimensional scenes. To deliver the necessary rendering rates, highly parallel hardware architectures are required. The challenge is then to design algorithms and software which effectively use the hardware parallelism. A rendering algorithm targeted to distributed memory MIMD architectures is described. For maximum performance, the algorithm exploits both object-level and pixel-level parallelism. The behavior of the algorithm is examined both analytically and experimentally. Its performance for large numbers of processors is found to be limited primarily by communication overheads. An experimental implementation for the Intel iPSC/860 shows increasing performance from 1 to 128 processors across a wide range of scene complexities. It is shown that minimal modifications to the algorithm will adapt it for use on shared memory architectures as well. Crockett, Thomas W. and Orloff, Tobias Unspecified Center NAS1-18605; RTOP 505-90-52-01...
Download or read book A Parallel Rendering Algorithm for MIMD Architectures written by National Aeronautics and Space Administration NASA and published by . This book was released on 2018-10-23 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications such as animation and scientific visualization demand high performance rendering of complex three dimensional scenes. To deliver the necessary rendering rates, highly parallel hardware architectures are required. The challenge is then to design algorithms and software which effectively use the hardware parallelism. A rendering algorithm targeted to distributed memory MIMD architectures is described. For maximum performance, the algorithm exploits both object-level and pixel-level parallelism. The behavior of the algorithm is examined both analytically and experimentally. Its performance for large numbers of processors is found to be limited primarily by communication overheads. An experimental implementation for the Intel iPSC/860 shows increasing performance from 1 to 128 processors across a wide range of scene complexities. It is shown that minimal modifications to the algorithm will adapt it for use on shared memory architectures as well. Crockett, Thomas W. and Orloff, Tobias Unspecified Center NAS1-18605; RTOP 505-90-52-01...
Download or read book A Parallel Rendering Algorithm for MIMD Architectures written by Thomas W. Crockett and published by . This book was released on 1991 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parallel Rendering written by Thomas W. Crockett and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "In computer graphics, rendering is the process by which an abstract description of a scene is converted to an image. When the scene is complex, or when high-quality images or high frame rates are required, the rendering process becomes computationally demanding. To provide the necessary levels of performance, parallel computing techniques must be brought to bear. Although parallelism has been exploited in computer graphics since the early days of the field, its initial use was primarily in specialized applications. The VLSI revolution of the late 1970's and the advent of scalable parallel computers during the late 1980's changed this situation. Today, parallel hardware is routinely used in graphics workstations, and numerous software-based rendering systems have been developed for general-purpose parallel architectures. This article provides a broad introduction to the subject of parallel rendering, encompassing both hardware and software systems. The focus is on the underlying concepts and the issues which arise in the design of parallel rendering algorithms and systems. We examine the different types of parallelism and how they can be applied in rendering applications. Concepts from parallel computing, such as data decomposition, task granularity, scalability, and load balancing, are considered in relation to the rendering problem. We also explore concepts from computer graphics, such as coherence and projection, which have a significant impact on the structure of parallel rendering algorithms. Our survey covers a number of practical considerations as well, including the choice of architectural platform, communication and memory requirements, and the problem of image assembly and display. We illustrate the discussion with numerous examples from the parallel rendering literature, representing most of the principal rendering methods currently used in computer graphics."
Download or read book Feed forward Volume Rendering Algorithm for Moderately Parallel MIMD Machines written by Roni Yagel and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parallel Volume Rendering on a Shared memory Multiprocessor written by Judith A. Challinger and published by . This book was released on 1992 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Volume rendering is a powerful, but computationally intensive, computer graphics technique for visualizing volumetric datasets. This paper presents results of investigations into techniques for volume rendering using parallel processing on a shared-memory, multiple- instruction, multiple-data (MIMD) architecture. In particular, two widely used algorithms for volume rendering, raycasting and projection, have been parallelized on a BBN TC2000, and their performance has been measured and analyzed. Preliminary results indicate that the raycasting approach to volume rendering has some advantages for parallelization on this type of architecture."
Download or read book Algorithms for Parallel Polygon Rendering written by Theoharis Theoharis and published by Springer Science & Business Media. This book was released on 1989-07-12 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This richly illustrated volume draws from a variety of sources to present a reference work for this remarkable volcanic province. Detailed descriptions of 44 major potentially active (Holocene) volcanoes form the core of the book. A compendium of geographical and morphological data on location, type, synonyms, summit elevation, edifice height, and status for each center, is followed by a summary of the structural and volcanological evolution of the edi- fice, historic and present activity, petrological and geochemical data, and an assessment of volcanic hazard. Each entry is superbly illustrated with a false color Landsat Thematic Mapper image, maps and ground photographs. Chapters on Holocene minor centers, and long-lived silicic caldera complexes are also well illustrated and summarise the available information on these important structures. General characteristics of these Holocene centers are then synthesised with data from older episodes of volcanism in a final chapter discussing regional volcanic evolution. In addition, the volume also contains a database summarising morphological, relative age, and volcanological data for all identifiable volcanic editifices in this volcanic province.
Download or read book Practical Parallel Rendering written by Alan Chalmers and published by CRC Press. This book was released on 2002-06-26 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meeting the growing demands for speed and quality in rendering computer graphics images requires new techniques. Practical parallel rendering provides one of the most practical solutions. This book addresses the basic issues of rendering within a parallel or distributed computing environment, and considers the strengths and weaknesses of multiprocessor machines and networked render farms for graphics rendering. Case studies of working applications demonstrate, in detail, practical ways of dealing with complex issues involved in parallel processing.
Download or read book Feed Forward Volume Rendering Algorithm for Moderately Parallel MIMD Machines written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-31 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algorithms for direct volume rendering on parallel and vector processors are investigated. Volumes are transformed efficiently on parallel processors by dividing the data into slices and beams of voxels. Equal sized sets of slices along one axis are distributed to processors. Parallelism is achieved at two levels. Because each slice can be transformed independently of others, processors transform their assigned slices with no communication, thus providing maximum possible parallelism at the first level. Within each slice, consecutive beams are incrementally transformed using coherency in the transformation computation. Also, coherency across slices can be exploited to further enhance performance. This coherency yields the second level of parallelism through the use of the vector processing or pipelining. Other ongoing efforts include investigations into image reconstruction techniques, load balancing strategies, and improving performance. Yagel, Roni NASA-CR-191158, E-7907, NAS 1.26:191158 NGT-26-027-011...
Download or read book Beyond the Renderer Software Architecture for Parallel Graphics and Visualization written by Thomas W. Crockett and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "As numerous implementations have demonstrated, software-based parallel rendering is an effective way to obtain the needed computational power for a variety of challenging applications in computer graphics and scientific visualization. To fully realize their potential, however, parallel renderers need to be integrated into a complete environment for generating, manipulating, and delivering visual data. We examine the structure and components of such an environment, including the programming and user interfaces, rendering engines, and image delivery systems. We consider some of the constraints imposed by real-world applications and discuss the problems and issues involved in bringing parallel rendering out of the lab and into production."
Download or read book Multiprocessor Methods for Computer Graphics Rendering written by Scott Whitman and published by A K Peters/CRC Press. This book was released on 1992-11-02 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive work merges two of the hottest topics in computer science: parallel computing and computer graphics. Selected Topics from the Table of Contents: -Overview of Accelerated Rendering Techniques -Overview of Parallel Methods for Image Generation -Issues in Parallel Algorithm Development -Overview of Base Level Implementation -Comparison of Task Partitioning Schemes -Characterization of Other Parameters on Performance
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Parallel Image Rendering Algorithm and Architecture Based on Ray Tracing and Radiosity Shading written by Li-Sheng Shen and published by . This book was released on 1993 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parallel Rendering Graphics Algorithms Using OpenCL written by Gary Deng and published by . This book was released on 2011 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The developments of computing hardware architectures are heading in a direction toward parallel computing. Whereas better and faster CPUs used to mean higher clock rates, better and faster CPUs now means more cores per chip. Additionally, GPUs are emerging as powerful parallel processing devices when computing particular types of problems. Computers today have a tremendous amount of varied parallel processing power. Utilizing these different devices typically means wrestling with varied architecture, vendor, or platform specific programming models and code. OpenCL is an open-standard designed to provide developers with a standard interface for programming varied (heterogeneous) parallel devices. This standard allows single source codes to define algorithms to solve vectorized problems on various parallel devices on the same machine. These programs are also portable. This project explores OpenCL to implement a cross-platform, parallel solution to a vectorized problem. The domain of the problem is ray-tracing. Ray-tracing is a computer graphics rendering algorithm that determines how to visualize a scene. A significant number of calculations are performed to colorize each pixel based on the data of the 3D objects in the scene. Though heavy, the calculations for each pixel can be made completely independently from the calculations of any of the other pixels. The project has a GUI implemented in C++. The project has a ray-tracing engine implemented in C++. The ray-traced rendering routines come in four implementations: 1) written recursively in C++, executed on the CPU cores; 2) written iteratively in C++, executed on the CPU cores; 3) written iteratively in OpenCL C, executed in parallel on the CPU cores; 4) written iteratively in OpenCL C, executed in parallel on the GPU cores. The GUI reports the running time to perform the ray-tracing calculations to visualize the scene to the frame buffer for each ray-tracing implementation.
Download or read book Parallel Rendering written by National Aeronaut Administration (Nasa) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This article provides a broad introduction to the subject of parallel rendering, encompassing both hardware and software systems. The focus is on the underlying concepts and the issues which arise in the design of parallel rendering algorithms and systems. We examine the different types of parallelism and how they can be applied in rendering applications. Concepts from parallel computing, such as data decomposition, task granularity, scalability, and load balancing, are considered in relation to the rendering problem. We also explore concepts from computer graphics, such as coherence and projection, which have a significant impact on the structure of parallel rendering algorithms. Our survey covers a number of practical considerations as well, including the choice of architectural platform, communication and memory requirements, and the problem of image assembly and display. We illustrate the discussion with numerous examples from the parallel rendering literature, representing most of the principal rendering methods currently used in computer graphics. Crockett, Thomas W. Unspecified Center...
Download or read book Parallel Rendering Symposium written by and published by . This book was released on 1995 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parallel Algorithms for Digital Image Processing Computer Vision and Neural Networks written by Ioannis Pitas and published by . This book was released on 1993-04-09 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: World-renowned contributors present papers concerning algorithms used on the latest generation of parallel machines (MIMD). Details key applications running the gamut from medical imaging, visualization and remote sensing to HDTV, demonstrating the large computational complexity necessary to perform these tasks.
