已回答
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

11 years 前 | 0

已提交

ortha.m
Orthonormalization Relative to matrix A

11 years 前 | 1 次下载 |

已提交

subspace.m
Angle between subspaces.

11 years 前 | 1 次下载 |

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

11 years 前 | 2 次下载 |

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

11 years 前 | 1 次下载 |

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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.

11 years 前 | 3 次下载 |

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

11 years 前 | 1 次下载 |

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

14 years 前 | 0

已回答
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...

14 years 前 | 0

已回答
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...

14 years 前 | 0

已回答
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 ...

14 years 前 | 0

已回答
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...

14 years 前 | 0

| 已接受

已回答
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 ...

14 years 前 | 1

| 已接受

已提交

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

16 years 前 | 1 次下载 |