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semargl-ng

a set of CLI tools to perform spectral analysis of micromagnetics-specific data

how to build:

Dependencies:

  • gcc
  • gsl
  • openmp
  • openblas
  • fftw
  • fftw-devel
  • fftw-libs-single

Install: cd semargl-ng; make all; sudo make install

usage:

calculating mode profiles (point-wise FFT):

  1. convert ovf data produced by either OOMMF or mumax3 to DUMP format, i.e. mumax3-convert -dump *.ovf. Alternatively, one can instruct mumax3 to save dump files directly by setting OutputFormat = DUMP.
  2. The data could be pre-processed to extract dynamic part of the magnetization vector and transforming it to uvw coordinates as given by the local direction of the magnetization vector in the ground state : mxyz2muvw *.dump. This will output files suffixed with *.UVW.dump.
  3. t2wr2c *.(UVW.)dump - transform (pre-processed) data from t(ime) to w(frequency) domain assuming r(eal) input and output c(omplex) data. The data is saved into two set of files, namely *.X.dump and *.Y.dump for amplitude and phase, respectively.
  4. Convert output *.dump files to VTK, e.g. mumax3-convert -vtk=binary *.X.dump.
  5. Visualize VTK files in your favorite software, e.g. paraview.

calculating dispersion:

comming soon...

benefits:

  • high performance
  • can process data that does not fit RAM
  • follows UNIX paradigm, i.e. each binary does only one thing and does it really well.