File	Date	Author	Commit
cmd	2024-08-24	William Henshaw	[ffc829] Add files
doc	2024-08-24	William Henshaw	[ffc829] Add files
matlab	2024-08-24	William Henshaw	[ffc829] Add files
src	2024-08-24	William Henshaw	[ffc829] Add files
tests	2024-08-26	William Douglas Henshaw	[0e191e] wdh
Makefile	2024-08-26	William Douglas Henshaw	[0e191e] wdh
README	2024-08-26	William Douglas Henshaw	[339c35] wdh

Read Me

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


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