Reword docs

diff --git a/include/deal.II/lac/petsc_block_sparse_matrix.h b/include/deal.II/lac/petsc_block_sparse_matrix.h
index 63b9edab52c77b2db581005ee8c9c3a052b33c8f..279301e1291ee0436cb3f026fb585016682b3288 100644 (file)
--- a/include/deal.II/lac/petsc_block_sparse_matrix.h
+++ b/include/deal.II/lac/petsc_block_sparse_matrix.h
@@ -264,9 +264,6 @@ namespace PETScWrappers
        * Call the compress() function on all the subblocks of the matrix
        * and update the internal state of the PETSc object.
        *
-       * This functionality is needed because PETSc may use this information
-       * to decide whether or not to rebuild the preconditioner.
-       *
        * See
        * @ref GlossCompress "Compressing distributed objects"
        * for more information.

diff --git a/include/deal.II/lac/petsc_block_vector.h b/include/deal.II/lac/petsc_block_vector.h
index cc751022a3c4f59b2cfbd42a25494f81e785ac5b..35b3d48591b759a0a7a451d4003bfccde5597acf 100644 (file)
--- a/include/deal.II/lac/petsc_block_vector.h
+++ b/include/deal.II/lac/petsc_block_vector.h
@@ -259,9 +259,6 @@ namespace PETScWrappers
        * Call the compress() function on all the subblocks of the vector
        * and update the internal state of the nested PETSc vector.
        *
-       * This functionality is needed because PETSc may cache vector norms for
-       * performance reasons.
-       *
        * See
        * @ref GlossCompress "Compressing distributed objects"
        * for more information.