Beantwortet
How can the Cholesky decomposition step in eigs() be avoided without passing a matrix to eigs that is a Cholesky decomposition?
check http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m

etwa 11 Jahre vor | 0

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ortha.m
Orthonormalization Relative to matrix A

etwa 11 Jahre vor | 1 Download |

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subspace.m
Angle between subspaces.

etwa 11 Jahre vor | 1 Download |

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majorization check
checks if X is (weakly) majorized by Y, where X and Y must be numeric arrays.

etwa 11 Jahre vor | 1 Download |

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pcg.m with 'null' and 'flex' options
Preconditioned Conjugate Gradients handles homogeneous equations and nonsymmetric preconditioning

etwa 11 Jahre vor | 2 Downloads |

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Best polynomial approximation in uniform norm
For a given function on an interval, the code calculates the min-max approximation by a polynomial.

etwa 11 Jahre vor | 4 Downloads |

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ODE Tutorial Demo
Advanced examples of using the MATLAB Symbolic Math Toolbox for Ordinary Differential Equations

etwa 11 Jahre vor | 2 Downloads |

Beantwortet
eigs with sparse matrices
try my http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m instead

fast 15 Jahre vor | 0

Beantwortet
Memory requirements of lobpcg: Matlab and hypre implementation differences
Have you actually tried the development version of SLEPc? The one that one gets by svn checkout http://www.grycap.upv.es/sle...

fast 15 Jahre vor | 0

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Memory requirements of lobpcg: Matlab and hypre implementation differences
The development version of SLEPc incorporates BLOPEX now, see http://code.google.com/p/blopex/wiki/PETScInstallDevel so that yo...

fast 15 Jahre vor | 0

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Memory requirements of lobpcg: Matlab and hypre implementation differences
Please try adding the following options to the ij driver: "-hmis -agg_nl 1 -interptype 6 -Pmx 4" These are proposed by a member ...

fast 15 Jahre vor | 0

Beantwortet
Memory requirements of lobpcg: Matlab and hypre implementation differences
The lobpcg code in hypre is very similar to the MATLAB code, and uses about the same memory. The BoomerAMG preconditioner requir...

fast 15 Jahre vor | 0

| akzeptiert

Beantwortet
lobpcg returning incorrect results for large sparse symmetric matrices
Very slow convergence is an expected normal behavior of lobpcg for such a problem, without preconditioning. Unfortunately, I am ...

fast 15 Jahre vor | 1

| akzeptiert

Gesendet

matlab2hypre and hypre2matlab
Read and write files with sparse matrices and vectors in hypre format

etwa 16 Jahre vor | 1 Download |