A python wrapper for the ZFP compression libary
Project description
pyzfp
Python wrapper over the zfp compression library. This is the second version, rewritten using Cython because the earlier version using ctypes was slow. Click here for performance comparison. Currently wraps zfp version 0.5.3 .
Installation
pip install pyzfp
This should download zfp version 0.5.3, compile it (with OPENMP
threading enabled) and leave the shared library ready-to-use as
<Location of module>/zfp-0.5.3/lib/libzfp.so
.
Usage
A sample program that demonstrates the use of the library: (also contents of test.py):
from pyzfp import compress, decompress
a = np.linspace(0, 100, num=1000000).reshape((100, 100, 100))
tolerance = 0.0000001
parallel = True
compressed = compress(a, tolerance=tolerance, parallel=parallel)
recovered = decompress(compressed, a.shape, a.dtype, tolerance=tolerance)
print(len(a.tostring()))
print(len(compressed))
print(np.linalg.norm(recovered-a))
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pyzfp-0.2rc3.tar.gz
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