Porting HLSVDPro from Fortran to Python

In late 2012 I ported HLSVDPro from Fortran to (almost) pure Python. The Python version runs about 2 - 5 times slower than the Fortran version (not bad, considering) and produces the same results. The code is released under [browser:trunk/hlsvdpro/LICENSE a BSD license].

You can get a copy of the code with this Subversion command –

svn co http://scion.duhs.duke.edu/guest_svn/hlsvdpro/trunk hlsvdpro

The Python port is in the directory experimental_pure_python_port which you can also [source:/trunk/experimental_pure_python_port browse through this Web interface].

Relationship to Vespa * [HlsvdproPortVespaUsefulness This port's usefulness to Vespa]

• [HlsvdproPortDbdsqr About the annoying function DBDSQR()]
• [HlsvdproPortBugs Bugs (in Fortran and Python)]
• [HlsvdproPortPerformance Performance]

Development Notes * [HlsvdproPortUnported Unported sections]

• [HlsvdproPortFortranMemoryAllocation About how the Fortran code allocates memory]
• [HlsvdproPortRandomness About the supposedly random numbers in zgetu0w()]
• [HlsvdproPortPlan The plan written in advance of the port]
• [HlsvdproPortFiles What's there] (a description of the files)
• [HlsvdproPortNotesToMyself Odds and ends useful to anyone interested in improving this port]