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sudo apt-get install build-essential
sudo apt-get update
# BLAS → LAPACK → ATLAS → numpy → scipy → Theano
# remove numpy and scipy
sudo apt-get remove python-numpy
sudo apt-get remove python-scipy
# Instalation commands
sudo apt-get install gfortran
sudo apt-get install libopenblas-dev
sudo apt-get install liblapack-dev

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# install dependencies
sudo apt-get update
sudo apt-get install -y build-essential
sudo apt-get install -y cmake
sudo apt-get install -y libgtk2.0-dev
sudo apt-get install -y pkg-config
sudo apt-get install -y python-numpy python-dev
sudo apt-get install -y libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install -y libjpeg-dev libpng-dev libtiff-dev libjasper-dev
 

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import tensorflow as tf
import numpy as np
import time

N=10000
K=4
MAX_ITERS = 1000

start = time.time()

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MATLAB's for loop iterates over columns, not individual elements. I've tripped over this too many times.

Consider a matrix.

A = magic(3)

A = ...

     8     1     6

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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$ vi /etc/sysctl.conf
# 系统所有进程一共可以打开的文件数量， 每个套接字也占用一个文件描述字
fs.file-max = 1491124
# 系统同时保持TIME_WAIT套接字的最大数目，http 短链接会产生很多 TIME_WAIT 套接字。
net.ipv4.tcp_max_tw_buckets = 7000
# 关闭 tcp 来源跟踪
net.ipv4.conf.default.accept_source_route = 0
# 缩短套接字处于 TIME_WAIT 的时间， 60s -> 30s
net.ipv4.tcp_fin_timeout = 30
# 启用 TIME_WAIT 复用，使得结束 TIEM_WAIT 状态的套接字的端口可以立刻被其他套接字使用。