Unable to build on Windows 10, VS 14

[thomasaarholt]

Unable to build on Windows 10, VS 14

[Marcello-Sega]

Hi,

I never tested it on a window machine, but from the error messages it looks like it might be a cython problem. Could you try updating your cython?

M

[thomasaarholt]

I'd originally installed it from conda today, and tried uninstalling and reinstalling it using pip, but I get the same error.

[Marcello-Sega]

Mhhh... I'm using py3.6 on my machine. I will have it tested on travis and will let you know asap.

[Marcello-Sega]

Bad luck:

Worker information

The language 'python' is currently unsupported on the Windows Build Environment.

I'll try something else.

[Marcello-Sega]

Still haven't managed to try it on a windows machine, but now it behaves well with python3.x.
The old implementation had a problem with the GIL and memory management.

Could you try upgrading with pip install --upgrade pytetgen ? The new version should be 0.2.0

Most likely the problem was the old .cpp source included in the package, which was definitely not compatible with python3.x. Another option, if still it does not work, would be to install from source to generate the .cpp source from .pyx directly on your machine ( pip install --compile . from within the source directory)

[thomasaarholt]

Yes! That built and installed!

[thomasaarholt]

Wahey! And it's twice as fast as scipy's implementation on my computer!

[thomasaarholt]

That was for 1 million 2D points:

import numpy as np
points = np.random.random((1000000, 2)) * (1000, 1000) # spread over 0-1000 bc we could run into floating point errors

import pytetgen
from scipy.spatial import Delaunay
%timeit Delaunay(points)
%timeit pytetgen.Delaunay(points)

6.34 s ± 20.8 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
3.04 s ± 14.7 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)

[Marcello-Sega]

I guess this can be closed.