Design and implementation of a parallel unstructured Euler solver using software primitives

Das, Raja; Mavriplis, Dimitri J.; Saltz, Joel; Gupta, S.; Ponnusamy, R.

doi:10.2514/3.12012

Cited by 74 publications

(40 citation statements)

References 13 publications

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“…The code was originally developed by Dimitri Mavriplis. The program was ported to the Touchstone Delta using Parti primitives [1,2] and the code was run to simulate a variety of aircraft configurations under a range of test conditions. While the port was carried out by hand, the strategy used to place the PARTI primitives was the same as the strategies that would result from our dataflow framework.…”

Section: Resultsmentioning

confidence: 99%

Compiler analysis for irregular problems in fortran D

Hanxleden

Kennedy

Koelbel

et al. 1993

Languages and Compilers for Parallel Computing

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We developed a dataflow framework which provides a basis for rigorously defining strategies to make use of runtime preprocessing methods for distributed memory multiprocessors.In many programs, several loops access the same off-processor memory locations. Our runtime support gives us a mechanism for tracking and reusing copies of off-processor data. A key aspect of our compiler analysis strategy is to determine when it is safe to reuse copies of off-processor data. Another crucial function of the compiler analysis is to identify situations which allow runtime preprocessing overheads to be amortized. This dataflow analysis will make it possible to effectively use the results of interprocedural analysis in our efforts to reduce interprocessor communication and the need for runtime preprocessing. Accesion For NTIS CRA&

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Section: Resultsmentioning

confidence: 99%

Compiler analysis for irregular problems in fortran D

Hanxleden

Kennedy

Koelbel

et al. 1993

Languages and Compilers for Parallel Computing

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“…A comparison in processing times between Class B and C is given in Figure 1. The second non-NAS benchmark being examined is IRREG [5]. IRREG is abstracted from a CFD application that uses unstructured meshes to model a physical problem.…”

Section: Parallel Programmingmentioning

confidence: 99%

Evaluating Performance of OpenMP and MPI on the SGI Origin 2000 with Benchmarks of Realistic Problem Sizes

Zoltani

Satya-narayana²,

Hisley³

2000

Distributed and Parallel Systems

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Six application benchmarks, including four numerical aerodynamic simulation (NAS) codes, provided by H. Jin and J. Wu, were previously parallelized using OpenMP and message-passing interface (MPI) and run on a 128-processor Silicon Graphics Inc. (SGI) Origin 2000. Detailed profile data were collected to understand the factors causing imperfect scalability. The results show that load imbalance and cost of remote accesses are the main factors in limited speedup of the OpenMP versions, whereas communication costs are the single major factor in the performance of the MPI versions.

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“…The PARTI library developed by Das et al 7,6] has similar objectives in dealing with parallel computations on generic sets. There are a number of detailed di erences between PARTI and OPlus but the principal di erence is that with OPlus the programmer is not aware of the message-passing required for the parallel execution.…”

Section: Introductionmentioning

confidence: 99%

Multigrid aircraft computations using the OPlus parallel library*

Crumpton¹,

Giles

1996

Parallel Computational Fluid Dynamics 1995

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This paper presents the OPlus library which is a exible library for distributed memory parallel computations on unstructured grids through the straightforward insertion of simple subroutine calls. It is based on an underlying abstraction involving sets, pointers (or mappings) between sets, and operations performed on sets. The key restriction enabling parallelisation is that operations on a particular set can be performed in any order.The set partitioning, computation of halo regions, and the exchange of halo data as required is performed automatically by the OPlus library after the user speci es the sets and pointers. A single source OPlus application code can be compiled for execution on either a parallel or a sequential machine, greatly easing maintainability of the code.The capabilities of the library are demonstrated by its use within a program for the calculation of inviscid ow over a complete aircraft using multigrid on a sequence of independent tetrahedral grids. Good computational e ciency is achieved on an 8-processor IBM SP1 and a 4-processor Silicon Graphics Power Challenge.

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Design and implementation of a parallel unstructured Euler solver using software primitives

Cited by 74 publications

References 13 publications

Compiler analysis for irregular problems in fortran D

Compiler analysis for irregular problems in fortran D

Evaluating Performance of OpenMP and MPI on the SGI Origin 2000 with Benchmarks of Realistic Problem Sizes

Multigrid aircraft computations using the OPlus parallel library*

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