From 30ad4219d93b4a5c8716befc14a0669f2794bbd5 Mon Sep 17 00:00:00 2001
From: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
Date: Mon, 19 Oct 2020 11:52:47 +0200
Subject: [PATCH] Add example report

---
 garlic/report.nix | 30 ++++++++++++++++++++++++++++++
 garlic/report.tex | 31 +++++++++++++++++++++++++++++++
 overlay.nix       |  5 +++++
 3 files changed, 66 insertions(+)
 create mode 100644 garlic/report.nix
 create mode 100644 garlic/report.tex

diff --git a/garlic/report.nix b/garlic/report.nix
new file mode 100644
index 0000000..e10e045
--- /dev/null
+++ b/garlic/report.nix
@@ -0,0 +1,30 @@
+{
+  stdenv
+, fig
+, exp
+, writeText
+, busybox
+, jq
+, texlive
+}:
+let
+  figJSON = writeText "fig.json" (builtins.toJSON fig);
+  expJSON = writeText "exp.json" (builtins.toJSON exp);
+in
+  stdenv.mkDerivation {
+    name = "report";
+    src = ./.;
+    buildInputs = [ jq texlive.combined.scheme-basic ];
+    buildPhase = ''
+      ls -l
+      sed -i -e "s:@fig\.nbody\.test@:$(jq -r .nbody.test ${figJSON}):g" report.tex
+      jq . ${figJSON}
+      jq . ${expJSON}
+      pdflatex report.tex -o report.pdf
+      pdflatex report.tex -o report.pdf
+    '';
+    installPhase = ''
+      mkdir $out
+      cp report.* $out
+    '';
+  }
diff --git a/garlic/report.tex b/garlic/report.tex
new file mode 100644
index 0000000..5e6759f
--- /dev/null
+++ b/garlic/report.tex
@@ -0,0 +1,31 @@
+\documentclass{article}
+\usepackage{graphicx}
+
+\begin{document}
+
+\title{Example of Nix + \LaTeX{}}
+\author{Rodrigo Arias Mallo}
+
+\maketitle
+
+\section{Nbody}
+The nbody program has been executed with varying block sizes while the execution 
+time $t$ is measured, as shown in the figure \ref{fig:nbody.test}.
+%
+\begin{figure}[h]
+    \centering
+		\includegraphics[width=0.45\textwidth]{@fig.nbody.test@/scatter.png}
+		\includegraphics[width=0.45\textwidth]{@fig.nbody.test@/box.png}
+		\caption{Nbody times with varying block size}
+		\label{fig:nbody.test}
+\end{figure}
+%
+The normalized time $\hat t$ is computed with the median time $t_m$ using $ \hat 
+t = t / t_{m} - 1 $. It can be observed that the normalized times exceed the 
+maximum allowed interval in most cases, except with the largest block sizes.
+
+Once the experiment \texttt{exp.nbody.test} changes, the hash of the experiment 
+program will change, therefore the plot will be updated and, lastly, this 
+report.
+
+\end{document}
diff --git a/overlay.nix b/overlay.nix
index 843e3cb..d2f8b4b 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -162,6 +162,11 @@ let
       # Configuration for the machines
       machines = callPackage ./garlic/machines.nix {};
 
+      report = callPackage ./garlic/report.nix {
+        fig = self.bsc.garlic.fig;
+        exp = self.bsc.garlic.exp;
+      };
+
       # Use the configuration for the following target machine
       targetMachine = self.garlic.machines.mn4;