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Fixing MKL on AMD Zen CPU

As per discussion on Reddit, it seems a workaround for the Intel MKL's notorious SIMD throttling of AMD Zen CPUs is as simple a setting MKL_DEBUG_CPU_TYPE=5 environment variable.

Benchmarks

All three scripts are executed in the same Python 3.7 environment on a first-gen AMD Zen CPU (1950x).
The difference will be even bigger on newer models as first-gen Zen resolves 256-bit AVX2 in two 128-bit instructions.

注意：本文内容适用于 Tmux 2.3 及以上的版本，但是绝大部分的特性低版本也都适用，鼠标支持、VI 模式、插件管理在低版本可能会与本文不兼容。

Tmux 快捷键 & 速查表 & 简明教程

启动新会话：

tmux [new -s 会话名 -n 窗口名]

恢复会话：

	import matplotlib.pyplot as plt
	from matplotlib import animation
	from IPython.display import display, HTML
	import numpy as np

	def plot_sequence_images(image_array):
	''' Display images sequence as an animation in jupyter notebook

	Args:
	image_array(numpy.ndarray): image_array.shape equal to (num_images, height, width, num_channels)