commit 4cc5ce8cc5dd1ba81758df94b1d5ecc17c049dc6
parent 0d94edc0698ea0a454d78256634c790793c56a32
Author: Ivan Gankevich <igankevich@ya.ru>
Date: Tue, 21 Feb 2017 17:54:32 +0300
Describe tested application and test platform.
Diffstat:
2 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/main.tex b/main.tex
@@ -5,6 +5,7 @@
\usepackage{amsmath}
%\usepackage{fixltx2e}
\usepackage{url}
+\usepackage{booktabs}
%\hyphenation{op-tical net-works semi-conduc-tor}
diff --git a/src/body.tex b/src/body.tex
@@ -170,6 +170,42 @@ gap.
\section{Evaluation}
+Proposed node failure handling approach was evaluated on the example of
+real-world application. The application generates ocean wavy surface in
+parallel with speficied frequency-directional spectrum. There are two
+sequential steps in the programme. The first step is to compute model
+coefficients by solving system of linear algebraic equations. The system is
+solved in parallel on all cores of the principal node. The second step is to
+generate wavy surface, parts of which are generated in parallel on all cluster
+nodes including the principal one. All generated parts are written in parallel
+to individual files. So, from computational point of view the programme is
+embarassingly parallel with little synchronisation between concurrent
+processes.
+
+All exprements were run on physical computer cluster consisting of 12 nodes.
+Wavy ocean surface parts were written to local file system to eliminate
+overhead of parallel writing to NFS from the total application performance.
+The input data was read from Network file system (NFS) mounted on each node, as
+it is much smaller in size than the output data and does not cause big
+overhead. Platform configuration is presented in
+Table~\ref{tab:platform-configuration}.
+
+\begin{table}
+ \centering
+ \caption{Test platform configuration.\label{tab:platform-configuration}}
+ \begin{tabular}{ll}
+ \toprule
+ CPU & Intel Xeon E5440, 2.83GHz \\
+ RAM & 4Gb \\
+ HDD & ST3250310NS, 7200rpm \\
+ No. of nodes & 12 \\
+ No. of CPU cores per node & 8 \\
+ \bottomrule
+ \end{tabular}
+\end{table}
+
+
+
\section{Discussion}
% Brainstorming results (various random thoughts).
