From 6589a9d16e61bd64d8282a3b28b13316cc4fcc1c Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Tue, 26 Oct 2021 10:13:34 +0100
Subject: [PATCH] add openpower2021 talk latex

---
 conferences/openpower2021/openpower_2021.tex | 141 +++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 conferences/openpower2021/openpower_2021.tex

diff --git a/conferences/openpower2021/openpower_2021.tex b/conferences/openpower2021/openpower_2021.tex
new file mode 100644
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--- /dev/null
+++ b/conferences/openpower2021/openpower_2021.tex
@@ -0,0 +1,141 @@
+\documentclass[slidestop]{beamer}
+\usepackage{beamerthemesplit}
+\usepackage{graphics}
+\usepackage{pstricks}
+
+\graphicspath{{./}}
+
+\title{The Libre-SOC Hybrid 3D CPU}
+\author{Luke Kenneth Casson Leighton}
+
+
+\begin{document}
+
+\frame{
+   \begin{center}
+    \huge{The Libre-SOC Hybrid 3D CPU}\\
+    \vspace{32pt}
+    \Large{Draft SVP64 in-place Matrix Multiply}\\
+    \Large{and FFT / DCT for the Power ISA}\\
+    \vspace{24pt}
+    \Large{OpenPOWER Summit 2021}\\
+    \vspace{16pt}
+    \large{Sponsored by NLnet's PET Programme}\\
+    \vspace{6pt}
+    \large{28th Oct 2021}
+  \end{center}
+}
+
+
+\frame{\frametitle{}
+
+\vspace{15pt}
+
+ \begin{itemize}
+   \item \vspace{15pt}
+   \item \vspace{15pt}
+   \item \vspace{15pt}
+  \end{itemize}
+}
+
+\frame{\frametitle{Overview of Libre-SOC goals}
+
+\vspace{15pt}
+
+ \begin{itemize}
+   \item To create power-efficient mass-volume products\vspace{15pt}
+   \item To leverage the OpenPOWER ecosystem to do so\vspace{15pt}
+   \item To be entirely transparent for Security reasons\vspace{15pt}
+   \item To empower businesses to bring Secure transparent\\
+         mass-volume products to market\vspace{15pt}
+  \end{itemize}
+}
+
+\frame{\frametitle{Overview of SVP64 goals}
+
+\vspace{15pt}
+
+ \begin{itemize}
+   \item High performance and high performance/watt\vspace{15pt}
+   \item Reduced code density (reduced I-Cache usage)\\
+         https://arxiv.org/abs/2002.10143 - 3.5x power reduction\vspace{8pt}
+   \item Remain accessible for assembler writers and compilers alike\vspace{15pt}
+   \item Introduce true Vectorisation to the Power ISA\\
+         (VSX is Packed SIMD)\vspace{8pt}
+   \item Be adopted via the external OPF ISA WG RFC process\\
+         (not: be a non-official custom extension. proprietary\\
+         custom extensions conflict with mass-volume adoption)\vspace{15pt}
+  \end{itemize}
+}
+
+
+
+%%\frame{\frametitle{nmigen PowerISA Decoder}
+
+%%\begin{center}
+%%\includegraphics[width=0.55\textwidth]{2020-09-09_21-04.png}
+%%\end{center}
+
+%%}
+
+\begin{frame}[fragile]
+\frametitle{Reminder of Simple-V}
+
+\begin{semiverbatim}
+Greatly simplified (like x86 "REP" instruction):
+
+  for (i = 0; i < VL; i++)
+       ireg[RT+i] <= ireg[RA+i] + ireg[RB+i];
+
+function op\_add(rd, rs1, rs2, predr) # add not VADD!
+  int i, id=0, irs1=0, irs2=0;
+  for (i = 0; i < VL; i++)
+    if (ireg[predr] & 1<<i) # predication uses intregs
+       ireg[rd+id] <= ireg[rs1+irs1] + ireg[rs2+irs2];
+    if (reg\_is\_vectorised[rd] )  \{ id += 1; \}
+    if (reg\_is\_vectorised[rs1])  \{ irs1 += 1; \}
+    if (reg\_is\_vectorised[rs2])  \{ irs2 += 1; \}
+\end{semiverbatim}
+
+\end{frame}
+
+
+
+\frame{\frametitle{Summary}
+
+ \begin{itemize}
+   \item Goal is to create a mass-volume low-power embedded SoC suitable
+         for use in netbooks, chromebooks, tablets, smartphones, IoT SBCs.
+   \item No DRM. 'Trustable' (by the users, not by Media Moguls) design
+         ethos as a \textit{business} objective: requires full transparency
+         as well as Formal Correctness Proofs
+   \item Collaboration with OpenPOWER Foundation and Members absolutely
+         essential. No short-cuts.  Standards to be developed and ratified
+         so that everyone benefits.
+   \item Working on the back of huge stability of POWER ecosystem
+   \item Combination of which is that Board Support Package is 100\%
+         upstream, app and product development by customer is hugely
+         simplified and much more attractive
+         
+  \end{itemize}
+}
+
+
+\frame{
+  \begin{center}
+    {\Huge The end\vspace{15pt}\\
+		   Thank you\vspace{15pt}\\
+		   Questions?\vspace{15pt}
+	}
+  \end{center}
+  
+  \begin{itemize}
+	\item Discussion: Libre-SOC-dev mailing list
+	\item Freenode IRC \#libre-soc
+	\item http://libre-soc.org/
+	\item http://nlnet.nl/PET
+  \end{itemize}
+}
+
+
+\end{document}
-- 
2.30.2