Augment documentation.

git-svn-id: https://svn.dealii.org/trunk@29757 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/doc/news/changes.h b/deal.II/doc/news/changes.h
index 6aceb090d35a0b828db3dcc3cea395a890b454f4..dfb20d925cf11b88d5255b6af40920bac7a4b569 100644 (file)
--- a/deal.II/doc/news/changes.h
+++ b/deal.II/doc/news/changes.h
@@ -71,6 +71,15 @@ this function.
 
 
 <ol>
+  <li> New: deal.II can now be compiled to 64-bit global dof indices. To turn 
+  this feature on, use the cmake option -DDEAL_II_WITH_64BIT_INDICES=ON. If 
+  PETSc and/or Trilinos are used, they must be compiled to support 64-bit
+  indices. To write a code that can use 32-bit and 64-bit indices depending on
+  deal.II compilation option, use types::global_dof_index for all the global 
+  dof indices.
+  <br>
+  (Kainan Wang and Bruno Turcksin, 2013/06/05)
+  </li>
 
   <li> New: All vector classes now have a member function
   <code>locally_owned_elements</code> that returns an index

diff --git a/deal.II/doc/news/news.html b/deal.II/doc/news/news.html
index 21da046e26c40443fec1334ce30691fd0342fbc6..cb215527037897d743c96eb1193d42b0afd9e895 100644 (file)
--- a/deal.II/doc/news/news.html
+++ b/deal.II/doc/news/news.html
@@ -37,6 +37,17 @@
     </p>
 
     <dl>
+      <dt>
+          <strong>2013/06/05: 64-bit version of deal.II</strong>
+      </dt>
+      <dd>
+          Because the global dof index variables in deal.II were of type
+    unsigned int, it was not possible to create a dof_handler with more than
+    4.3 billions of unknowns. The 64-bit version of deal.II uses unsigned long
+    long int and thus, allows for 18e18 unknowns.
+      </dd>
+
+
       <dt>
           <strong>2013/03/07: Build system switched to CMake</strong>
       </dt>