A Direct Out-of-Core Solver for CGWAVE on the Cray X1

Abstract

CGWAVE is a general-purpose, state-of-the-art wave prediction model. It is applicable to the estimation of wave fields in harbors, open coastal regions, coastal inlets, around islands, and around fixed or floating structures. CGWAVE generates a system of simultaneous linear complex equations that are difficult to solve. Some iterative solvers do not converge at all, while others struggle to converge. A direct, banded, out-of-core solver that utilized reordering of the nodes to reduce the size of the bandwidth was written. The solver was then optimized for the US Army Engineer Research and Development Center Major Shared Resource Center (ERDC MSRC) Cray X1. This paper will describe the details of how this work was performed and give performance results on the ERDC MSRC Cray X1.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2004
Accession Number
ADP023851

Entities

People

  • Fred T. Tracy
  • Thomas C. Oppe
  • Zeki Demirbilek

Organizations

  • Engineer Research and Development Center

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DTIC Thesaurus Topics

  • Bandwidth
  • Coastal Engineering
  • Coastal Regions
  • Compilers
  • Computational Fluid Dynamics
  • Computations
  • Computer Programs
  • Computers
  • Department Of Defense
  • Directives
  • Engineers
  • Equations
  • Group Velocity
  • High Performance Computing
  • Military Applications
  • Military Operations
  • Phase Velocity

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Linear Algebra
  • Parallel and Distributed Computing.