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  • 1
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    Mathematical model partitioning and packing for parallel computer calculation (1986)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: This paper deals with the development of multiprocessor simulations from a serial set of ordinary differential equations describing a physical system. The identification of computational parallelism within the model equations is discussed. A technique is presented for identifying this parallelism and for partitioning the equations for parallel solution on a multiprocessor. Next, an algorithm which packs the equations into a minimum number of processors is described. The results of applying the packing algorithm to a turboshaft engine model are presented.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Automating the parallel processing of fluid and structural dynamics calculations (1987)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The NASA Lewis Research Center is actively involved in the development of expert system technology to assist users in applying parallel processing to computational fluid and structural dynamic analysis. The goal of this effort is to eliminate the necessity for the physical scientist to become a computer scientist in order to effectively use the computer as a research tool. Programming and operating software utilities have previously been developed to solve systems of ordinary nonlinear differential equations on parallel scalar processors. Current efforts are aimed at extending these capabilities to systems of partial differential equations, that describe the complex behavior of fluids and structures within aerospace propulsion systems. This paper presents some important considerations in the redesign, in particular, the need for algorithms and software utilities that can automatically identify data flow patterns in the application program and partition and allocate calculations to the parallel processors. A library-oriented multiprocessing concept for integrating the hardware and software functions is described.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA-TM-89837 , E-3494 , NAS 1.15:89837
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Automating the multiprocessing environment (1989)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An approach to automate the programming and operation of tree-structured networks of multiprocessor systems is discussed. A conceptual, knowledge-based operating environment is presented, and requirements for two major technology elements are identified as follows: (1) An intelligent information translator is proposed for implementating information transfer between dissimilar hardware and software, thereby enabling independent and modular development of future systems and promoting a language-independence of codes and information; (2) A resident system activity manager, which recognizes the systems capabilities and monitors the status of all systems within the environment, is proposed for integrating dissimilar systems into effective parallel processing resources to optimally meet user needs. Finally, key computational capabilities which must be provided before the environment can be realized are identified.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA-TM-4103 , E-4426 , NAS 1.15:4103
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Automating the parallel processing of fluid and structural dynamics calculations (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The NASA Lewis Research Center is actively involved in the development of expert system technology to assist users in applying parallel processing to computational fluid and structural dynamic analysis. The goal of this effort is to eliminate the necessity for the physical scientist to become a computer scientist in order to effectively use the computer as a research tool. Programming and operating software utilities have previously been developed to solve systems of ordinary nonlinear differential equations on parallel scalar processors. Current efforts are aimed at extending these capabilties to systems of partial differential equations, that describe the complex behavior of fluids and structures within aerospace propulsion systems. This paper presents some important considerations in the redesign, in particular, the need for algorithms and software utilities that can automatically identify data flow patterns in the application program and partition and allocate calculations to the parallel processors. A library-oriented multiprocessing concept for integrating the hardware and software functions is described.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: 1987 Annual Summer Computer Simulation Conference; Jul 27, 1987 - Jul 30, 1987; Montreal; Canada
    Format: text
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    NASA TECHNICAL REPORTS
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