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Computing subdominant unstable modes of turbulent plasma with a parallel Jacobi-Davidson eigensolver

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  • معلومة اضافية
    • Publisher Information:
      Wiley-Blackwell Hispana 2011-12-10
    • نبذة مختصرة :
      In the numerical solution of large-scale eigenvalue problems, Davidson-type methods are an increasingly popular alternative to Krylov eigensolvers. The main motivation is to avoid the expensive factorizations that are often needed by Krylov solvers when the problem is generalized or interior eigenvalues are desired. In Davidson-type methods, the factorization is replaced by iterative linear solvers that can be accelerated by a smart preconditioner. Jacobi-Davidson is one of the most effective variants. However, parallel implementations of this method are not widely available, particularly for non-symmetric problems. We present a parallel implementation that has been included in SLEPc, the Scalable Library for Eigenvalue Problem Computations, and test it in the context of a highly scalable plasma turbulence simulation code. We analyze its parallel efficiency and compare it with a Krylov-Schur eigensolver. © 2011 John Wiley and Sons, Ltd..
    • الموضوع:
      Eigenvalue computations; Jacobi-Davidson; Message-passing parallelization; Plasma physics simulation; CIENCIAS DE LA COMPUTACION E INTELIGENCIA ARTIFICIAL; info:eu-repo/semantics/article
    • Availability:
      Open access content. Open access content
      http://rightsstatements.org/vocab/InC/1.0
      info:eu-repo/semantics/openAccess
    • Note:
      TEXT
      English
    • Other Numbers:
      UPV oai:riunet.upv.es:10251/34280
      urn:issn:1532-0626
      info:doi:10.1002/cpe.1740
      1138424427
    • Contributing Source:
      UNIVERSITAT POLITECNICA DE VALENCIA
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1138424427
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