\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{moutaz}
\pdfinfo{
  /Title (applied.pdf)
  /Creator (Cheatography)
  /Author (moutaz)
  /Subject (applied Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{applied Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{moutaz} via \textcolor{DarkBackground}{\uline{cheatography.com/50534/cs/13928/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}moutaz \\
  \uline{cheatography.com/moutaz} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 12th December, 2017.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{unroll}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{int H\_out = H – K + 1; \newline int W\_out = W – K + 1; \newline for (int b = 0; b \textless{} B; ++b) \newline for (int c = 0; c \textless{} C; ++c) \{ int w\_base = c {\emph{ (K}}K); for (int p = 0; p \textless{} K; ++p) \newline for (int q = 0; q \textless{} K; ++q) \{ for(inth=0;h\textless{} H\_out;++h) \newline for (int w = 0; w \textless{} W\_out; ++w) \{ \newline int w\_unroll = w\_base + p {\emph{ K + q; \newline int h\_unroll = h }} W\_out + w; \newline X\_unroll{[}b, h\_unroll, w\_unroll{]} = X{[}b, c, h + p, w + q{]};} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Unroll}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Unroll size C{\emph{K}}K x H\_out*W\_out} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Input (/ for rep) C{\emph{(H\_out+K-1)}}(W\_out+K-1)} \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{W forward}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{int m = blockIdx.x; \newline int h = blockIdx.y / W\_grid + threadIdx.y; \newline int w = blockIdx.y \% W\_grid + threadIdx.x; \newline float acc = 0.; \newline for(intc=0; c\textless{}C;c++)\{ \newline for(intp=0;p\textless{}K;p++) KxK filter for (int q = 0; q \textless{} K; q++) \newline              acc += X{[}c, h + p, w + q{]} * W{[}m, c, p, q{]}; \newline \} \newline     Y{[}m, h, w{]} = acc;} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Convo matr}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{int X\_tile\_width = TILE\_WIDTH + K-1; \newline extern \_\_shared\_\_ float shmem{[}{]}; \newline float{\emph{ X\_shared = \&shmem{[}0{]}; \newline float}} W\_shared = \&shmem{[}X\_tile\_width {\emph{ X\_tile\_width{]}; \newline m = blockIdx.x; \newline h\_base = (blockIdx.z / W\_grid) }} TILE\_SIZE; the block w\_base = (blockIdx.z \% W\_grid) * TILE\_SIZE; x = threadIdx.x; ty = threadIdx.y; h = h\_base + tx; w = w\_base + ty; \newline float acc = 0.; \newline for (c = 0; c \textless{} C; c++) \newline tx and ty used as shorthand for threadIdx.x and threadIdx.y \newline if (( ty \textless{} K) \&\& ( tx \textless{} K)) W\_shared{[}ty, tx{]}= W {[}m, c, ty, tx{]}; \newline \_\_syncthreads(); \newline for (int i = h; i \textless{} h\_base + X\_tile\_width; i += TILE\_WIDTH) \{ for (int j = w; j \textless{} w\_base + X\_tile\_width; j += TILE\_WIDTH) \newline X\_shared{[}i - h\_base, j - w\_base{]} = X{[}n, c, i, j{]}\}\_\_syncthreads();\}Y{[}n, m, h, w{]} = acc;} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.14011 cm} x{2.83689 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Calculations}}  \tn
% Row 0
\SetRowColor{LightBackground}
T/B 1024 & warps 32 T \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Warps 32 T & SM 8 B 1536 T \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}