From: Timo Heister <timo.heister@gmail.com>
Date: Mon, 12 Jan 2015 16:30:29 +0000 (-0500)
Subject: add test for reinit() and copy_from()
X-Git-Tag: v8.3.0-rc1~553^2~4
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a119fabe599c399c8d076e51ee67875ca909a71e;p=dealii.git

add test for reinit() and copy_from()
---

diff --git a/tests/gla/mat_05.cc b/tests/gla/mat_05.cc
new file mode 100644
index 0000000000..6ab75b11b1
--- /dev/null
+++ b/tests/gla/mat_05.cc
@@ -0,0 +1,138 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2004 - 2013 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE at
+// the top level of the deal.II distribution.
+//
+// ---------------------------------------------------------------------
+
+
+
+// reinit and copy_from for LA::MPI::SparseMatrix
+
+#include "../tests.h"
+#include <deal.II/lac/generic_linear_algebra.h>
+#include <deal.II/base/index_set.h>
+#include <fstream>
+#include <iostream>
+#include <iomanip>
+#include <vector>
+
+#include "gla.h"
+
+template <class LA>
+void test ()
+{
+  unsigned int myid = Utilities::MPI::this_mpi_process (MPI_COMM_WORLD);
+  unsigned int numproc = Utilities::MPI::n_mpi_processes (MPI_COMM_WORLD);
+
+  if (myid==0)
+    deallog << "numproc=" << numproc << std::endl;
+
+  // each processor owns 2 indices and all
+  // are ghosting Element 1 (the second)
+
+  IndexSet local_active(numproc*2);
+  local_active.add_range(myid*2,myid*2+2);
+  IndexSet local_relevant= local_active;
+  local_relevant.add_range(0,1);
+
+  CompressedSimpleSparsityPattern csp (local_relevant);
+
+  for (unsigned int i=0; i<2*numproc; ++i)
+    if (local_relevant.is_element(i))
+      csp.add(i,i);
+
+  csp.add(0,1);
+
+
+  typename LA::MPI::SparseMatrix mat;
+  mat.reinit (local_active, local_active, csp, MPI_COMM_WORLD);
+
+  Assert(mat.n()==numproc*2, ExcInternalError());
+  Assert(mat.m()==numproc*2, ExcInternalError());
+
+  // set local values
+  mat.set(myid*2,myid*2, myid*2.0);
+  mat.set(myid*2+1,myid*2+1, myid*2.0+1.0);
+
+  mat.compress(VectorOperation::insert);
+
+  mat.add(0,1,1.0);
+
+  mat.compress(VectorOperation::add);
+
+  deallog << "l1-norm: " << mat.l1_norm() << std::endl;
+  if (myid==0)
+    deallog << "mat(0,1): " << mat(0,1) << std::endl;
+  
+  {
+    // disabled:
+    //typename LA::MPI::SparseMatrix mat2(mat);
+  }
+  {
+    // disabled:
+    //typename LA::MPI::SparseMatrix mat2;
+    //mat2 = mat;
+  }
+  
+  {
+    deallog << "* reinit(other):" << std::endl;
+    typename LA::MPI::SparseMatrix mat2;
+    mat2.reinit(mat);
+    deallog << "l1-norm: " << mat2.l1_norm() << std::endl;
+    if (myid==0)
+      deallog << "mat(0,1): " << mat2(0,1) << std::endl;
+    mat2.add(0,1,0.3);
+    mat2.compress(VectorOperation::add);
+    if (myid==0)
+      deallog << "after adding mat(0,1): " << mat2(0,1) << std::endl;
+  }
+  {
+    deallog << "* copy_from():" << std::endl;
+    typename LA::MPI::SparseMatrix mat2;
+    // PETSc needs a reinit() befor copy_from()
+    mat2.reinit (local_active, local_active, csp, MPI_COMM_WORLD);
+    mat2.copy_from(mat);
+    deallog << "l1-norm: " << mat2.l1_norm() << std::endl;
+    if (myid==0)
+      deallog << "mat(0,1): " << mat2(0,1) << std::endl;
+    mat2.add(0,1,0.3);
+    mat2.compress(VectorOperation::add);
+    if (myid==0)
+      deallog << "after adding mat(0,1): " << mat2(0,1) << std::endl;
+  }
+
+  // done
+  if (myid==0)
+    deallog << "OK" << std::endl;
+}
+
+
+
+int main (int argc, char **argv)
+{
+  Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, 1);
+  MPILogInitAll log;
+  {
+    deallog.push("PETSc");
+    test<LA_PETSc>();
+    deallog.pop();
+    deallog.push("Trilinos");
+    test<LA_Trilinos>();
+    deallog.pop();
+  }
+
+  // compile, don't run
+  //if (myid==9999)
+  //  test<LA_Dummy>();
+
+
+}
diff --git a/tests/gla/mat_05.mpirun=3.output b/tests/gla/mat_05.mpirun=3.output
new file mode 100644
index 0000000000..b32c68e1e6
--- /dev/null
+++ b/tests/gla/mat_05.mpirun=3.output
@@ -0,0 +1,49 @@
+
+DEAL:0:PETSc::numproc=3
+DEAL:0:PETSc::l1-norm: 5.00000
+DEAL:0:PETSc::mat(0,1): 3.00000
+DEAL:0:PETSc::* reinit(other):
+DEAL:0:PETSc::l1-norm: 0.00000
+DEAL:0:PETSc::mat(0,1): 0.00000
+DEAL:0:PETSc::after adding mat(0,1): 0.900000
+DEAL:0:PETSc::* copy_from():
+DEAL:0:PETSc::l1-norm: 5.00000
+DEAL:0:PETSc::mat(0,1): 3.00000
+DEAL:0:PETSc::after adding mat(0,1): 3.90000
+DEAL:0:PETSc::OK
+DEAL:0:Trilinos::numproc=3
+DEAL:0:Trilinos::l1-norm: 5.00000
+DEAL:0:Trilinos::mat(0,1): 3.00000
+DEAL:0:Trilinos::* reinit(other):
+DEAL:0:Trilinos::l1-norm: 0.00000
+DEAL:0:Trilinos::mat(0,1): 0.00000
+DEAL:0:Trilinos::after adding mat(0,1): 0.900000
+DEAL:0:Trilinos::* copy_from():
+DEAL:0:Trilinos::l1-norm: 5.00000
+DEAL:0:Trilinos::mat(0,1): 3.00000
+DEAL:0:Trilinos::after adding mat(0,1): 3.90000
+DEAL:0:Trilinos::OK
+
+DEAL:1:PETSc::l1-norm: 5.00000
+DEAL:1:PETSc::* reinit(other):
+DEAL:1:PETSc::l1-norm: 0.00000
+DEAL:1:PETSc::* copy_from():
+DEAL:1:PETSc::l1-norm: 5.00000
+DEAL:1:Trilinos::l1-norm: 5.00000
+DEAL:1:Trilinos::* reinit(other):
+DEAL:1:Trilinos::l1-norm: 0.00000
+DEAL:1:Trilinos::* copy_from():
+DEAL:1:Trilinos::l1-norm: 5.00000
+
+
+DEAL:2:PETSc::l1-norm: 5.00000
+DEAL:2:PETSc::* reinit(other):
+DEAL:2:PETSc::l1-norm: 0.00000
+DEAL:2:PETSc::* copy_from():
+DEAL:2:PETSc::l1-norm: 5.00000
+DEAL:2:Trilinos::l1-norm: 5.00000
+DEAL:2:Trilinos::* reinit(other):
+DEAL:2:Trilinos::l1-norm: 0.00000
+DEAL:2:Trilinos::* copy_from():
+DEAL:2:Trilinos::l1-norm: 5.00000
+