From: Peter Munch Date: Sat, 3 Aug 2024 09:55:33 +0000 (+0200) Subject: Fix MatrixFreeTools::compute_diagonal X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F17428%2Fhead;p=dealii.git Fix MatrixFreeTools::compute_diagonal --- diff --git a/doc/news/changes/minor/20240803Munch b/doc/news/changes/minor/20240803Munch new file mode 100644 index 0000000000..106f83220e --- /dev/null +++ b/doc/news/changes/minor/20240803Munch @@ -0,0 +1,5 @@ +Fixed: MatrixFreeTools::compute_diagonal() used +to use first_selected_component also for accessing +(block) vectors. This has been fixed. +
+(Peter Munch, Nils Much, 2024/07/30) diff --git a/include/deal.II/matrix_free/tools.h b/include/deal.II/matrix_free/tools.h index 6e3928a1aa..8b9c1f9f64 100644 --- a/include/deal.II/matrix_free/tools.h +++ b/include/deal.II/matrix_free/tools.h @@ -76,6 +76,9 @@ namespace MatrixFreeTools * * The parameters @p dof_no, @p quad_no, and @p first_selected_component are * passed to the constructor of the FEEvaluation that is internally set up. + * + * The parameter @p first_vector_component is used to select the right + * starting block in a block vector. */ template *cell_operation)(phi); }, dof_no, quad_no, - first_selected_component); + first_selected_component, + first_vector_component); } template ::value>:: - get_vector_component(diagonal_global, d + first_selected_component); + get_vector_component(diagonal_global, d + first_vector_component); const auto &dof_info = matrix_free.get_dof_info(dof_no); @@ -1745,7 +1757,8 @@ namespace MatrixFreeTools const CLASS *owning_class, const unsigned int dof_no, const unsigned int quad_no, - const unsigned int first_selected_component) + const unsigned int first_selected_component, + const unsigned int first_vector_component) { compute_diagonal*boundary_operation)(phi); }, dof_no, quad_no, - first_selected_component); + first_selected_component, + first_vector_component); } namespace internal diff --git a/tests/matrix_free/compute_diagonal_07.cc b/tests/matrix_free/compute_diagonal_07.cc index d134e59d9d..94d72e5004 100644 --- a/tests/matrix_free/compute_diagonal_07.cc +++ b/tests/matrix_free/compute_diagonal_07.cc @@ -29,7 +29,7 @@ template > void -test() +test(const unsigned int first_vector_component) { Triangulation tria; GridGenerator::hyper_ball(tria); @@ -104,9 +104,10 @@ test() diagonal_global.print(deallog.get_file_stream()); - LinearAlgebra::distributed::BlockVector diagonal_global_block(dim); + LinearAlgebra::distributed::BlockVector diagonal_global_block( + dim + first_vector_component); - for (unsigned int comp = 0; comp < dim; ++comp) + for (unsigned int comp = 0; comp < dim + first_vector_component; ++comp) matrix_free.initialize_dof_vector(diagonal_global_block.block(comp), 1); MatrixFreeTools::compute_diagonal(matrix_free, - diagonal_global_block, - kernel, - 1); + VectorizedArrayType>( + matrix_free, + diagonal_global_block, + kernel, + 1, + 0, + 0, + first_vector_component); diagonal_global_block.print(deallog.get_file_stream()); } @@ -128,5 +133,6 @@ main(int argc, char **argv) Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, 1); MPILogInitAll all; - test<2, 1>(); + test<2, 1>(0); + test<2, 1>(1 /*test first vector component*/); } diff --git a/tests/matrix_free/compute_diagonal_07.output b/tests/matrix_free/compute_diagonal_07.output index ecf8996667..fffb6018bf 100644 --- a/tests/matrix_free/compute_diagonal_07.output +++ b/tests/matrix_free/compute_diagonal_07.output @@ -11,3 +11,19 @@ Process #0 Local range: [0, 8), global size: 8 Vector data: 0.000e+00 0.000e+00 4.621e+00 4.621e+00 0.000e+00 4.621e+00 4.621e+00 0.000e+00 +Process #0 +Local range: [0, 16), global size: 16 +Vector data: +0.000e+00 0.000e+00 0.000e+00 0.000e+00 4.621e+00 4.621e+00 4.621e+00 4.621e+00 0.000e+00 0.000e+00 4.621e+00 4.621e+00 4.621e+00 4.621e+00 0.000e+00 0.000e+00 +Process #0 +Local range: [0, 8), global size: 8 +Vector data: +0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 +Process #0 +Local range: [0, 8), global size: 8 +Vector data: +0.000e+00 0.000e+00 4.621e+00 4.621e+00 0.000e+00 4.621e+00 4.621e+00 0.000e+00 +Process #0 +Local range: [0, 8), global size: 8 +Vector data: +0.000e+00 0.000e+00 4.621e+00 4.621e+00 0.000e+00 4.621e+00 4.621e+00 0.000e+00