semargl-ng

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

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how to build:

Dependencies:

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

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

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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.

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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.