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Parallel subroutines to solve large scale eigenvalue problems

ARPACK software is capable of solving large scale symmetric, nonsymmetric, and generalized eigenproblems from significant application areas. The software is designed to compute a few (k) eigenvalues with user specified features such as those of largest real part or largest magnitude. Storage requirements are on the order of n*k locations. No auxiliary storage is required. A set of Schur basis vectors for the desired k-dimensional eigen-space is computed which is numerically orthogonal to working precision. Numerically accurate eigenvectors are available on request.

Important Features:

* Reverse Communication Interface. * Single and Double Precision Real Arithmetic Versions for Symmetric, Non-symmetric, * Standard or Generalized Problems. * Single and Double Precision Complex Arithmetic Versions for Standard or Generalized Problems. * Routines for Banded Matrices - Standard or Generalized Problems. * Routines for The Singular Value Decomposition. * Example driver routines that may be used as templates to implement numerous Shift-Invert strategies for all problem types, data types and precision.

This package provides parpack: the MPI implementation of arpack.

This package contains the shared library.

Package version:3.1.1-2.1


arpack (3.1.1-2.1) unstable; urgency=low

  * Non-maintainer upload.
  * libarpack2: add Breaks: octave3.2  (Closes: #684773)
    This fixes some upgrade paths by removing the obsolete octave3.2 (and its
    triggers) a bit earlier.  dpkg may run trigger processing of a package
    even if its dependencies are not satisfied.  The octave3.2 triggers may
    be run in such a state and will fail, abo


arpack-ng - 3.1.1

   * Option --enable-maintainer-mode added to the configure
   * --disable-mpi disables the build of parpack (Closes: #714)
   * Switch to automake 1.11.3

 -- Sylvestre Ledru <>  Mon, 21 May 2012 09:08:41 +0200

arpack-ng - 3.1.0

   * Many bug fixes in the parpack lib. It is an old patch from upstream.
     Thanks to Viral Shah for pinging


# -*- coding: utf-8 -*-
This package was debianized by Christophe Prud'homme on
Mon,  4 Feb 2002 15:06:42 -0500.

It was downloaded from

Copyright and License (downloaded on 2008-11-12 by Adam C. Powell, IV

BSD Software License

Pertains to ARPACK and P_ARPACK

Copyright (c) 

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