From a2da1eb4637e35a0d7112cf60891c94ed262d380 Mon Sep 17 00:00:00 2001 From: Wolfgang Bangerth Date: Wed, 2 Jun 2004 16:09:12 +0000 Subject: [PATCH] Add the entries from the post-5.0 development branch. git-svn-id: https://svn.dealii.org/trunk@9362 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/doc/news/c-5.0.html | 96 +++++++++++++++++++++++++++++++++++-- 1 file changed, 92 insertions(+), 4 deletions(-) diff --git a/deal.II/doc/news/c-5.0.html b/deal.II/doc/news/c-5.0.html index 6223454f47..671e5c190c 100644 --- a/deal.II/doc/news/c-5.0.html +++ b/deal.II/doc/news/c-5.0.html @@ -28,6 +28,35 @@ contributor's names are abbreviated by WB (Wolfgang Bangerth), GK

+ +

Incompatibilities

+ +

+Following are a few modifications to the library that unfortunately +are incompatible with previous versions of the library, but which we +deem necessary for the future maintainability of the +library. Unfortunately, some of these changes will require +modifications to application programs. We apologize for the +inconvenience this causes. +

+ + +
    +
  1. + Changed: Previously, parallel PETSc matrices only took the sizes of the + matrix and the number of rows to be stored locally as arguments. They + chose the partitioning of columns to be the same as that for the + rows. However, this does not work for non-quadratic parallel matrices, + and leads to very hard to find errors. Therefore, all constructors and + reinit functions of the parallel sparse matrix classes now take an + additional argument indicating the partitioning of columns of the matrix. +
    + (WB 2004/06/02) +

    +
+ + +

General

@@ -35,7 +64,6 @@ contributor's names are abbreviated by WB (Wolfgang Bangerth), GK -

base

@@ -43,10 +71,10 @@ contributor's names are abbreviated by WB (Wolfgang Bangerth), GK
  • New: An object of the new ConditionalOStream class allows to print - to standard output depending on its condition, which is active + to an output stream depending on a condition, which is active or not. This is particular useful for parallel computations - when only one process should print to standard output. An - object pout of this class is pregenerated. + when only one process should print to standard output, while in all + other processes we simply want output suppressed.
    (RH 2004/05/26)

    @@ -58,6 +86,66 @@ contributor's names are abbreviated by WB (Wolfgang Bangerth), GK

    lac

      +
    1. + New: Block matrices and vectors have been factored into abstract base + classes and concrete implementation classes. While the previous classes + still exist in all their functionality, this allowed us to now also + have block matrices and vectors for PETSc sequential and parallel + objects. +
      + (WB 2004/06/02) +

      + +
    2. + New: Vector and block vector classes had a commented out template + constructor constructing such a vector from a vector object with a + different template argument, for example constructing a Vector<double> from a Vector<float>. This constructor has been + commented out a long time ago due to a compiler bug in which the + explicit keyword on template constructors was ignored, a + fact that is dangerous since it may lead the compiler to generate + temporaries without our ado. This bug is not detected during + configuration time of the library, and these constructors are available + whenever the compiler does not contain this bug. +
      + (WB 2004/06/02) +

      + +
    3. + New: In analogy to the PETSc vector classes, the PETSc matrix classes + now also have member functions local_range, + in_local_range, and local_size. +
      + (WB 2004/06/02) +

      + +
    4. + New: Parallel PETSc matrix and vector classes now have member functions + get_mpi_communicator that returns the MPI + communicator object these objects operate on. +
      + (WB 2004/06/02) +

      + +
    5. + Changed: The PETSc linear solver classes now take a constant, rather + than a nonconstant reference to the MPI communicator to be used. This + prevents some unnecessary compiler problems in conjunction with the new + get_mpi_communicator function. +
      + (WB 2004/06/02) +

      + +
    6. + New: Parallel and sequential PETSc sparse matrix classes can now be + initialized (via either constructor or reinit functions) with a + compressed sparsity pattern object, allowing for more efficient + preallocation of nonzero entries. +
      + (WB 2004/06/02) +

    -- 2.39.5