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	<title>Non classé &#8211; Hextreme</title>
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	<link>https://www.hextreme.eu</link>
	<description>Hexahedral Mesh Generation in Real Time</description>
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	<title>Non classé &#8211; Hextreme</title>
	<link>https://www.hextreme.eu</link>
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	<item>
		<title>FRAMES2020 workshop</title>
		<link>https://www.hextreme.eu/frames2020-workshop/</link>
					<comments>https://www.hextreme.eu/frames2020-workshop/#respond</comments>
		
		<dc:creator><![CDATA[Hextreme Staff]]></dc:creator>
		<pubDate>Wed, 02 Dec 2020 10:58:28 +0000</pubDate>
				<category><![CDATA[Non classé]]></category>
		<guid isPermaLink="false">http://www.hextreme.eu/?p=4803</guid>

					<description><![CDATA[Online event (free), December 9, 2020 The goal of the FRAMES workshop is to gather both theoretical (computer science &#38; applied mathematics) and practical (engineering &#38; industry) specialists in meshing. The second edition is a small workshop jointly organized by the Computer Graphics Group from University of Bern, the Pixel team from INRIA/Loria and the &#8230; <a href="https://www.hextreme.eu/frames2020-workshop/" class="more-link">Continue reading <span class="screen-reader-text">FRAMES2020 workshop</span></a>]]></description>
										<content:encoded><![CDATA[
<h2 class="wp-block-heading">Online event (free), December 9, 2020</h2>



<p>The goal of the FRAMES workshop is to gather both theoretical (computer science &amp; applied mathematics) and practical (engineering &amp; industry) specialists in meshing.</p>



<p>The second edition is a small workshop jointly organized by the Computer Graphics Group from University of Bern, the Pixel team from INRIA/Loria and the Hextreme team from UCLouvain. Attendance is free and open to the public.</p>



<p class="has-text-align-center">See the workshop webpage for more information:<br><a href="https://www.hextreme.eu/frames2020" data-type="URL" data-id="https://www.hextreme.eu/frames2020"><strong>https://www.hextreme.eu/frames2020/</strong></a></p>



<p><strong>Update:</strong> the recordings of the talks are now available on Youtube (see the workshop webpage).</p>
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			</item>
		<item>
		<title>HXTSPR</title>
		<link>https://www.hextreme.eu/hxtspr/</link>
					<comments>https://www.hextreme.eu/hxtspr/#respond</comments>
		
		<dc:creator><![CDATA[Hextreme Staff]]></dc:creator>
		<pubDate>Tue, 15 Oct 2019 15:52:50 +0000</pubDate>
				<category><![CDATA[Non classé]]></category>
		<guid isPermaLink="false">http://www.hextreme.eu/?p=4483</guid>

					<description><![CDATA[Reviving the Search for Optimal Tetrahedralizations For the 28th International Meshing Roundtable held this year in Buffalo NY, we are revisiting an operation to find the optimal triangulation of a cavity (considering fixed points). This operation was named &#8220;Small Polyhedron Reconnection&#8221; (SPR) by Liu et al. in their 2006 paper which introduced it. Our implementation &#8230; <a href="https://www.hextreme.eu/hxtspr/" class="more-link">Continue reading <span class="screen-reader-text">HXTSPR</span></a>]]></description>
										<content:encoded><![CDATA[
<h2 class="wp-block-heading">Reviving the Search for Optimal Tetrahedralizations</h2>



<ul class="wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex"><li class="blocks-gallery-item"><figure><img fetchpriority="high" decoding="async" width="977" height="1024" src="http://www.hextreme.eu/wp-content/uploads/2019/10/bad04_unoptimized_wline_compressed-977x1024.png" alt="" data-id="4543" data-link="http://www.hextreme.eu/bad04_unoptimized_wline_compressed/" class="wp-image-4543" srcset="https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_unoptimized_wline_compressed-977x1024.png 977w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_unoptimized_wline_compressed-286x300.png 286w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_unoptimized_wline_compressed-768x805.png 768w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_unoptimized_wline_compressed.png 1313w" sizes="(max-width: 977px) 100vw, 977px" /><figcaption>unoptimized</figcaption></figure></li><li class="blocks-gallery-item"><figure><img decoding="async" width="977" height="1024" src="http://www.hextreme.eu/wp-content/uploads/2019/10/bad04_noSPR_wline-977x1024.png" alt="" data-id="4523" data-link="http://www.hextreme.eu/bad04_nospr_wline/" class="wp-image-4523" srcset="https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_noSPR_wline-977x1024.png 977w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_noSPR_wline-286x300.png 286w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_noSPR_wline-768x805.png 768w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_noSPR_wline.png 1313w" sizes="(max-width: 977px) 100vw, 977px" /><figcaption>smoothing + edge-removal</figcaption></figure></li><li class="blocks-gallery-item"><figure><img decoding="async" width="977" height="1024" src="http://www.hextreme.eu/wp-content/uploads/2019/10/bad04_wline-977x1024.png" alt="" data-id="4533" data-link="http://www.hextreme.eu/bad04_wline/" class="wp-image-4533" srcset="https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_wline-977x1024.png 977w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_wline-286x300.png 286w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_wline-768x805.png 768w, https://www.hextreme.eu/wp-content/uploads/2019/10/bad04_wline.png 1313w" sizes="(max-width: 977px) 100vw, 977px" /><figcaption>smoothing + edge-removal + SPR</figcaption></figure></li></ul>



<div class="wp-block-image"><figure class="alignright is-resized"><img loading="lazy" decoding="async" src="http://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-1024x388.png" alt="" class="wp-image-2373" width="285" height="108" srcset="https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-1024x388.png 1024w, https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-300x114.png 300w, https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-768x291.png 768w, https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg.png 1202w" sizes="auto, (max-width: 285px) 100vw, 285px" /><figcaption><a href="https://git.immc.ucl.ac.be/hextreme/hxtspr">https://git.immc.ucl.ac.be/hextreme/hxtspr</a></figcaption></figure></div>



<p>For the <a href="https://imr.sandia.gov/">28th International Meshing Roundtable</a> held this year in Buffalo NY, we are revisiting an operation to find the optimal triangulation of a cavity (considering fixed points). This operation was named &#8220;Small Polyhedron Reconnection&#8221; (SPR) by Liu et al. in <a href="http://www.techscience.com/doi/10.3970/cmes.2006.014.031.pdf">their 2006 paper</a> which introduced it. Our implementation contains various optimizations, that differs from the optimization that Liu et al. described in <a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.2605">their 2009 paper</a>, notably adding memoization and robust exact intersection tests. We probably have to apologize that there is no reference or comparison to the optimized method of Liu et al. in  <a href="https://imr.sandia.gov/_assets/documents/2019_IMR_Papers/8A.1-Marot.pdf">our IMR paper</a>. The unfortunate reasons for this are described in the README.md of our source code, <strong><a href="https://git.immc.ucl.ac.be/hextreme/hxtspr">available on Gitlab</a></strong>. Hope you enjoy(ed) our presentation at the IMR</p>
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			</item>
		<item>
		<title>HXTSort</title>
		<link>https://www.hextreme.eu/hxtsort/</link>
					<comments>https://www.hextreme.eu/hxtsort/#respond</comments>
		
		<dc:creator><![CDATA[Hextreme Staff]]></dc:creator>
		<pubDate>Tue, 05 Sep 2017 13:50:39 +0000</pubDate>
				<category><![CDATA[Non classé]]></category>
		<category><![CDATA[sort]]></category>
		<category><![CDATA[tool]]></category>
		<guid isPermaLink="false">http://www.hextreme.eu/?p=1683</guid>

					<description><![CDATA[view on GitLab HXTSort is a single header library including lightning fast Parallel Radix Sort macros. It can sort 400 million integers per second on a laptop&#8217;s  i7-6700HQ and up to 1 billion integers per second on a Intel® Xeon Phi™  7210 ( 1.30GHz). &#160; It includes multiple  key-based algorithms for sorting data on any standard computer &#8230; <a href="https://www.hextreme.eu/hxtsort/" class="more-link">Continue reading <span class="screen-reader-text">HXTSort</span></a>]]></description>
										<content:encoded><![CDATA[<p><a href="https://git.immc.ucl.ac.be/hextreme/HXTSort">view on GitLab</a></p>
<p><figure id="attachment_2373" aria-describedby="caption-attachment-2373" style="width: 245px" class="wp-caption aligncenter"><a href="https://git.immc.ucl.ac.be/hextreme/HXTSort"><img loading="lazy" decoding="async" class="wp-image-2373 " src="http://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-300x114.png" alt="view on gitlab" width="245" height="93" srcset="https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-300x114.png 300w, https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-768x291.png 768w, https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg-1024x388.png 1024w, https://www.hextreme.eu/wp-content/uploads/2017/09/wm_no_bg.png 1202w" sizes="auto, (max-width: 245px) 100vw, 245px" /></a><figcaption id="caption-attachment-2373" class="wp-caption-text"><strong>HXTSort</strong> &#8211; <strong>H</strong>e<strong>xt</strong>reme <strong>Sort</strong>ing Library</figcaption></figure></p>
<p>HXTSort is a single header library including lightning fast <strong>Parallel Radix Sort</strong> macros.</p>
<p>It can sort 400 million integers per second on a laptop&#8217;s  <em>i7-6700HQ </em>and up to <strong>1 billion integers per second</strong> on a <em>Intel<b>®</b> Xeon Phi<img src="https://s.w.org/images/core/emoji/17.0.2/72x72/2122.png" alt="™" class="wp-smiley" style="height: 1em; max-height: 1em;" />  7210 ( 1.30GHz).</em></p>
<p>&nbsp;</p>
<p><figure id="attachment_2523" aria-describedby="caption-attachment-2523" style="width: 762px" class="wp-caption aligncenter"><img loading="lazy" decoding="async" class="wp-image-2523" src="http://www.hextreme.eu/wp-content/uploads/2017/09/HXTSort-1024x580.png" alt="HXTSort is a lot faster than qsort" width="762" height="432" srcset="https://www.hextreme.eu/wp-content/uploads/2017/09/HXTSort-1024x580.png 1024w, https://www.hextreme.eu/wp-content/uploads/2017/09/HXTSort-300x170.png 300w, https://www.hextreme.eu/wp-content/uploads/2017/09/HXTSort-768x435.png 768w, https://www.hextreme.eu/wp-content/uploads/2017/09/HXTSort.png 1525w" sizes="auto, (max-width: 762px) 100vw, 762px" /><figcaption id="caption-attachment-2523" class="wp-caption-text">Because HXTSORT32_UNIFORM does not always pick the best underlying algorithm on the core i7, we manually chose the best of LSB32 and PARALLEL_HYBRID32.</figcaption></figure></p>
<p>It includes multiple  key-based algorithms for sorting data on any standard computer (single-node SMPs). It could also be a very good core algorithm for a MPI merge sort implementation for Clusters.</p>
<p><img loading="lazy" decoding="async" class="alignnone size-large wp-image-1833" src="http://www.hextreme.eu/wp-content/uploads/2017/09/graph2-1-1024x451.png" alt="" width="525" height="231" srcset="https://www.hextreme.eu/wp-content/uploads/2017/09/graph2-1-1024x451.png 1024w, https://www.hextreme.eu/wp-content/uploads/2017/09/graph2-1-300x132.png 300w, https://www.hextreme.eu/wp-content/uploads/2017/09/graph2-1-768x338.png 768w" sizes="auto, (max-width: 525px) 100vw, 525px" /></p>
<hr />
<p>HXTSort will be used in our future Mesh Generation Library. A version of this library containing only a basic Mesher will be released soon.</p>
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			</item>
		<item>
		<title>Gmsh workshop</title>
		<link>https://www.hextreme.eu/gmsh-workshop/</link>
					<comments>https://www.hextreme.eu/gmsh-workshop/#respond</comments>
		
		<dc:creator><![CDATA[Hextreme Staff]]></dc:creator>
		<pubDate>Tue, 21 Mar 2017 09:08:05 +0000</pubDate>
				<category><![CDATA[Non classé]]></category>
		<guid isPermaLink="false">http://www.hextreme.eu/?p=843</guid>

					<description><![CDATA[From next Tuesday, 28th of March, we will be in Lanzarote, Spain for the Third Gmsh workshop . Join us if you are close by!]]></description>
										<content:encoded><![CDATA[<p>From next Tuesday, 28th of March, we will be in Lanzarote, Spain for the <a href="http://sites.uclouvain.be/gmshworkshop2017/"> Third Gmsh workshop </a>. Join us if you are close by!</p>
]]></content:encoded>
					
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