[PYTHON] Anaconda 2.5 Release

news

2.5 of Python Science and Technology Computational Distribution Anaconda has been released. According to DEVELOPER BLOG, MKL (Intel Math Kernel), which was previously provided as a paid version, Library) seems to be available in the free version as well.

I tried to see how fast it was. Prepare the OpenBLAS [^ 1] version and MKL version docker so far, and check with the smallest one of DigitalOcean. Saw.

[^ 1]: "conda install nomkl" will be the OpenBLAS version.

I timed the inverse matrix calculation of a 2000 × 2000 random matrix.

$ docker run -it --rm tsutomu7/scientific-python python -m timeit -c \
         'import numpy as np; np.linalg.inv(np.random.rand(2000, 2000))'
10 loops, best of 3: 2.61 sec per loop

$ docker run -it --rm tsutomu7/scientific-python:mkl python -m timeit -c \
         'import numpy as np; np.linalg.inv(np.random.rand(2000, 2000))'
10 loops, best of 3: 1.61 sec per loop

It seems to be about 40% faster.

By the way, 4 cores can be executed in parallel by default. It seems that it cannot be set beyond 4 cores.

python


import mkl
mkl.get_max_threads()
>>>
4

mkl.set_num_threads(1)
mkl.get_max_threads()
>>>
1

mkl.set_num_threads(8)
mkl.get_max_threads()
>>>
4

that's all

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