Updates to webpages.

git-svn-id: svn+ssh://software.sandia.gov/svn/hpcg/trunk@229 5e06a57e-6b39-4354-92a0-249a7d0c5410

Author: maherou

web/about.php

@@ -27,7 +27,8 @@
       <li>Sparse triangular solve.</li>
       <li>Vector updates.</li>
       <li>Global dot products.</li>
-      <li>Driven by an additive Schwarz, symmetric Gauss-Seidel preconditioned conjugate gradient algorithm.</li>
+      <li>Local symmetric Gauss-Seidel smoother.</li>
+      <li>Driven by multigrid preconditioned conjugate gradient algorithm that exercises the key kernels on a nested set of coarse grids.</li>
       <li>Reference implementation is written in C++ with MPI and OpenMP support.</li>
   </ul>
   </p>

web/applications.php

@@ -20,7 +20,7 @@
 
     <p><b>Current activities:</b>
 
-We have released HPCG Version 1.1 for general availability.
+We have released HPCG Version 2.0 for general availability.
 
   </p><br/><br/>
 

web/default.php

@@ -27,9 +27,9 @@
 <!--
 <div class="releaseBoxContainer">
 <div class="releaseBox">
-  <p>The current release update is: <strong>1.1</strong></p>
+  <p>The current release update is: <strong>2.0</strong></p>
 
-  <p>Released: <strong>November 26, 2013</strong></p>
+  <p>Released: <strong>January 28, 2014</strong></p>
 
 </div>
 </div>

web/download.php

@@ -18,16 +18,17 @@
 
 <div class="breadcrumb">Download</div>
 
-<h3>HPCG Benchmark Release Version 1.1</h3>
+<h3>HPCG Benchmark Release Version 2.0</h3>
 
-<p>The current HPCG Suite Release version is 1.1. </p>
+<p>The current HPCG Suite Release version is 2.0. </p>
 
 
-  HPCG: <a href="downloads/hpcg-1.1.tar.gz">Reference Version 1.1 (26-Nov-2013)</a>
+  HPCG: <a href="downloads/hpcg-2.0.tar.gz">Reference Version 2.0 (29-Jan-2014)</a>
 
     <ul>
         <li><b>Previous versions of HPCG:</b></li>
     <ul>
+     <li><b>Reference:</b> <a href="downloads/hpcg-1.1.tar.gz">HPCG 1.1 Reference code (November 26, 2013)</a>
      <li><b>Reference:</b> <a href="downloads/hpcg-1.0.tar.gz">HPCG 1.0 Reference code (November 19, 2013)</a>
      <li><b>Reference:</b> <a href="downloads/hpcg-0.5.tar.gz">HPCG 0.5 Reference code (October 25, 2013)</a>
      <li><b>Reference:</b> <a href="downloads/hpcg-0.4.tar.gz">HPCG 0.4 Reference code (October 21, 2013)</a>

web/faq.php

@@ -40,7 +40,6 @@
   know that performance will be suboptimal when using reference
   kernels.
   </p>
-</ol>
 
 <li><b>Is it permitted to use a custom ordering for the matrix?</b>
   <p>

web/news.php

@@ -16,6 +16,9 @@
 
 <div class="breadcrumb"><a href="default.php">Home</a> - News</div>
 
+<strong>Tuesday, January 28th, 2014</strong> - HPCG Benchmark Release 2.0, the
+first Multigrid preconditioned version of HPCG , is now <a href="download.php">available for download</a>.  See the <a href="release_notes.php">release notes</a> for more information.<br/><br/>
+
 <strong>Tuesday, November 26th, 2013</strong> - HPCG Benchmark Release 1.1, the
 first update release of the HPCG Suite, is now <a href="download.php">available for download</a>.  See the <a href="release_notes.php">release notes</a> for more information.<br/><br/>
 

web/packages.php

@@ -13,6 +13,7 @@
     <ul>
 	<li><b>Versions of HPCG:</b></li>
     <ul>
+     <li><b>Reference:</b> <a href="downloads/hpcg-2.0.tar.gz">HPCG 2.0 Reference code (January 28, 2014)</a>
      <li><b>Reference:</b> <a href="downloads/hpcg-1.1.tar.gz">HPCG 1.1 Reference code (November 26, 2013)</a>
      <li><b>Reference:</b> <a href="downloads/hpcg-1.0.tar.gz">HPCG 1.0 Reference code (November 19, 2013)</a>
      <li><b>Reference:</b> <a href="downloads/hpcg-0.5.tar.gz">HPCG 0.5 Reference code (October 25, 2013)</a>

web/release_notes.php

@@ -16,6 +16,22 @@
 
 <div class="breadcrumb"><a href="download.php">Download</a> - Release Notes</div>
 
+<h3> HPCG Benchmark Release 2.0</h3>
+
+<p>HPCG 2.0 provides the first implementation of a multigrid preconditioner for the conjugate gradient method.
+<ul>
+<li> HPCG 2.0 replaces the additive Schwarz preconditioner with a synthetic multigrid approach. </li>
+<li> The number of coarse grid levels is parametrized but fixed for production benchmark runs (presently set to 3 levels of coarsening).</li>
+<li> We use injection as the grid transfer operator and symmetric Gauss-Seidel as the pre and post smoother.</li>
+<li> All kernels from HPCG 1.1 remain important and no new kernels were added.
+<li> The biggest impact of the multigrid preconditioner is that all computation and communication kernels will execute on
+     a nested sequence of coarse grids where each grid level is 8 times smaller than the previous level.</li>
+<li> Every attempt was made to assure that the kernels are not unnecessarily different between HPCG 1.1 and HPCG 2.0.</li>
+<li> Even so, some changes were necessary to supported the nested hierarchy.</li>
+<li> We did not implement a true multigrid preconditioner.  In particular, we do not have a "bottom" solver for the coarsest grid.</li>
+<li> We also added a Vector struct to facility easier implementation of kernels on discrete devices such as GPUs.</li>
+</p>
+
 <h3> HPCG Benchmark Release 1.1</h3>
 
 <p>This is the first update release of HPCG. See HISTORY file for more detailed list of changes.</p>