--- /dev/null
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2017 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.
+//
+// ---------------------------------------------------------------------
+
+#include "../tests.h"
+#include "../lapack/create_matrix.h"
+
+// test serial saving and loading of distributed ScaLAPACKMatrices
+
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/utilities.h>
+#include <deal.II/base/conditional_ostream.h>
+#include <deal.II/base/timer.h>
+#include <deal.II/base/multithread_info.h>
+
+#include <deal.II/lac/scalapack.h>
+
+#include <fstream>
+#include <iostream>
+#include <cstdio>
+
+
+template <typename NumberType>
+void test(const unsigned int size, const unsigned int block_size)
+{
+ const std::string filename = std::string(SOURCE_DIR) + "/test.h5";
+
+ MPI_Comm mpi_communicator(MPI_COMM_WORLD);
+ const unsigned int this_mpi_process(Utilities::MPI::this_mpi_process(mpi_communicator));
+ ConditionalOStream pcout (std::cout, (this_mpi_process ==0));
+
+ //create FullMatrix and fill it
+ FullMatrix<NumberType> full(size);
+ unsigned int count=0;
+ for (unsigned int i=0; i<size; ++i)
+ for (unsigned int j=0; j<size; ++j, ++count)
+ full(i,j) = count;
+
+ //create 2d process grid
+ std::shared_ptr<Utilities::MPI::ProcessGrid> grid = std::make_shared<Utilities::MPI::ProcessGrid>(mpi_communicator,size,size,block_size,block_size);
+
+ ScaLAPACKMatrix<NumberType> scalapack_matrix(size,size,grid,block_size,block_size);
+ ScaLAPACKMatrix<NumberType> scalapack_matrix_copy(size,size,grid,block_size,block_size);
+
+ scalapack_matrix = full;
+ scalapack_matrix.save(filename.c_str());
+ scalapack_matrix_copy.load(filename.c_str());
+
+ FullMatrix<NumberType> copy(size);
+ scalapack_matrix_copy.copy_to(copy);
+ copy.add(-1,full);
+
+ pcout << size << " " << block_size << std::endl;
+ AssertThrow(copy.frobenius_norm()<1e-12,ExcInternalError());
+ std::remove(filename.c_str());
+}
+
+
+
+int main (int argc,char **argv)
+{
+ Utilities::MPI::MPI_InitFinalize mpi_initialization(argc, argv, numbers::invalid_unsigned_int);
+
+ const std::vector<unsigned int> sizes = {{100,200,300}};
+ const std::vector<unsigned int> block_sizes = {{1,16,32}};
+
+ for (const auto &s : sizes)
+ for (const auto &b : block_sizes)
+ test<double>(s,b);
+
+ for (const auto &s : sizes)
+ for (const auto &b : block_sizes)
+ test<float>(s,b);
+}