File	Date	Author	Commit
bin	2024-09-15	William Douglas Henshaw	[58ead7] wdh
cmd	2024-09-15	William Douglas Henshaw	[58ead7] wdh
doc	2024-09-15	William Douglas Henshaw	[58ead7] wdh
matlab	2024-09-15	William Douglas Henshaw	[58ead7] wdh
obj	2024-09-15	William Douglas Henshaw	[58ead7] wdh
results	2024-09-15	William Douglas Henshaw	[58ead7] wdh
src	2024-09-15	William Douglas Henshaw	[58ead7] wdh
tests	2024-08-26	William Douglas Henshaw	[0e191e] wdh
Makefile	2024-09-15	William Douglas Henshaw	[ff104c] wdh
README	2024-09-15	William Douglas Henshaw	[45d6e0] wdh

Read Me

  Compute Eigenvalues and EigenVectors of PDE problems
  ----------------------------------------------------

Getting started:

To clone a new version of eigSolvers from sourceforge (replace wdhenshaw by your sourceforge account name)

  git clone https://git.code.sf.net/p/eigsolvers/code eigSolvers      (*CHECK ME*)

OR if you have an account on sourceForge you can use

  git clone ssh://USERNAME@git.code.sf.net/p/eigsolvers/code eigSolvers

where USERNAME is your sourceForge account name. for example:
  git clone ssh://wdhenshaw@git.code.sf.net/p/eigsolvers/code eigSolvers

  >> enter sourceforge password 


Set the following in your .cshrc (change the locations of the libraries as appropriate)

setenv Overture /home/henshw/Overture.g
setenv APlusPlus /home/henshw/software/AppPpp-0.8.3/A++/install
setenv PPlusPlus /home/henshw/software/AppPpp-0.8.3/A++/install
setenv PETSC_DIR /home/henshw/software/petsc-3.18.2-serial
setenv PETSC_ARCH PETSC_ARCH=linux-gnu-opt
setenv PETSC_LIB /home/henshw/software/petsc-3.18.2-serial/linux-gnu-opt/lib
setenv SLEPC_DIR /home/henshw/software/slepc-3.18.2-serial
setenv LAPACK /usr/lib/x86_64-linux-gnu
setenv OvertureGridDirectories /home/henshw/Overture.g/sampleGrids:/home/henshw/grids
alias plotStuff /home/henshw/Overture.g/bin/plotStuff
alias ogen /home/henshw/Overture.g/bin/ogen


Type 'make' to compile and build bin/genEigs (you will need Overture to be installed and PETSc)

Example: 
  Compute 64 eigenvalues and eigenvectors of the Laplacian on a square (grid square32.odrer2.hdf created with ogen)

 bin/genEigs -noplot eigs.cmd -problem=laplace -eigCase=square -g=square32.order2.hdf -eigOption=1 -discreteEigenvalues=1 -eps_s=largest_magnitude -tol=1.0e-12 -bc1=d -show=square32O2Ev64.show -numEigenValues=64 -go=go

 Then use
    plotStuff square32O2Ev64.show to view eigenvectors 

 See cmd/memo for more sample commands 


 NOTE:
   To push changes used:
   git push origin HEAD:master