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	<id>http://docs.snic.se/w/index.php?action=history&amp;feed=atom&amp;title=Essense_Code_Optimisation</id>
	<title>Essense Code Optimisation - Revision history</title>
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	<updated>2026-04-12T13:03:55Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://docs.snic.se/w/index.php?title=Essense_Code_Optimisation&amp;diff=5934&amp;oldid=prev</id>
		<title>Soon-Heum Ko (NSC) at 13:39, 15 October 2014</title>
		<link rel="alternate" type="text/html" href="http://docs.snic.se/w/index.php?title=Essense_Code_Optimisation&amp;diff=5934&amp;oldid=prev"/>
		<updated>2014-10-15T13:39:34Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 13:39, 15 October 2014&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l9&quot; &gt;Line 9:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 9:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Essense is a CFD code which &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;applies &lt;/del&gt;summation-by-parts operators in the middle of the high order finite difference method, and weak boundary conditions. This project aims for &amp;quot;a better understanding of the bottlenecks of this code and learning about performance optimization potentials&amp;quot; (1st Phase for 1 person month) and &amp;quot;obtaining a revised code prepared for fine-level optimizations&amp;quot; (2nd Phase for 2 person months). Revision of the code includes the reduction of communication calls which is essential to achieving the better communication performance and the change of time-consuming loops for increasing the cache usage and improving vectorisation capability. In the long run, a speedup of this code will enable us to perform bigger and more detailed flow simulations within a varying range of scientific projects. The ambition is to prepare the code for PRACE Tier 0 type scaling. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Essense is a CFD code which &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;is characterised by &lt;/ins&gt;summation-by-parts operators in the middle of the high order finite difference method, and weak boundary conditions. This project aims for &amp;quot;a better understanding of the bottlenecks of this code and learning about performance optimization potentials&amp;quot; (1st Phase for 1 person month) and &amp;quot;obtaining a revised code prepared for fine-level optimizations&amp;quot; (2nd Phase for 2 person months). Revision of the code includes the reduction of communication calls which is essential to achieving the better communication performance and the change of time-consuming loops for increasing the cache usage and improving vectorisation capability. In the long run, a speedup of this code will enable us to perform bigger and more detailed flow simulations within a varying range of scientific projects. The ambition is to prepare the code for PRACE Tier 0 type scaling. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Soon-Heum Ko (NSC)</name></author>
		
	</entry>
	<entry>
		<id>http://docs.snic.se/w/index.php?title=Essense_Code_Optimisation&amp;diff=5933&amp;oldid=prev</id>
		<title>Soon-Heum Ko (NSC): Created page with &quot;{{project info |description=Essense Code Analysis and Optimisation &lt;!--|research project=--&gt; |fields=Computational science; Computational fluid dynamics |financing=SNIC |active=y...&quot;</title>
		<link rel="alternate" type="text/html" href="http://docs.snic.se/w/index.php?title=Essense_Code_Optimisation&amp;diff=5933&amp;oldid=prev"/>
		<updated>2014-10-15T13:39:07Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{project info |description=Essense Code Analysis and Optimisation &amp;lt;!--|research project=--&amp;gt; |fields=Computational science; Computational fluid dynamics |financing=SNIC |active=y...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{project info&lt;br /&gt;
|description=Essense Code Analysis and Optimisation&lt;br /&gt;
&amp;lt;!--|research project=--&amp;gt;&lt;br /&gt;
|fields=Computational science; Computational fluid dynamics&lt;br /&gt;
|financing=SNIC&lt;br /&gt;
|active=yes&lt;br /&gt;
|start date=2014-08-01&lt;br /&gt;
|end date=2014-12-31&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
Essense is a CFD code which applies summation-by-parts operators in the middle of the high order finite difference method, and weak boundary conditions. This project aims for &amp;quot;a better understanding of the bottlenecks of this code and learning about performance optimization potentials&amp;quot; (1st Phase for 1 person month) and &amp;quot;obtaining a revised code prepared for fine-level optimizations&amp;quot; (2nd Phase for 2 person months). Revision of the code includes the reduction of communication calls which is essential to achieving the better communication performance and the change of time-consuming loops for increasing the cache usage and improving vectorisation capability. In the long run, a speedup of this code will enable us to perform bigger and more detailed flow simulations within a varying range of scientific projects. The ambition is to prepare the code for PRACE Tier 0 type scaling. &lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Members ==&lt;br /&gt;
{{#ask: [[Category:Person]] [[project::{{PAGENAME}}]]&lt;br /&gt;
|?centre&lt;br /&gt;
|?role&lt;br /&gt;
|?field&lt;br /&gt;
}}&lt;/div&gt;</summary>
		<author><name>Soon-Heum Ko (NSC)</name></author>
		
	</entry>
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