From: Marc Fehling Date: Tue, 15 Dec 2020 04:00:24 +0000 (-0700) Subject: Added serialization benchmark. X-Git-Tag: v9.3.0-rc1~736^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d0ff5dd6c68b2f7394cf3f70bf753288e95e99b8;p=dealii.git Added serialization benchmark. --- diff --git a/tests/grid/cell_id_08.cc b/tests/grid/cell_id_08.cc new file mode 100644 index 0000000000..47031eb788 --- /dev/null +++ b/tests/grid/cell_id_08.cc @@ -0,0 +1,189 @@ +// --------------------------------------------------------------------- +// +// Copyright (C) 2020 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.md at +// the top level directory of deal.II. +// +// --------------------------------------------------------------------- + + +// benchmark for creation and serialization of CellId objects + +#include +#include + +#include +#include +#include + +#include +#include +#include +#include +#include + +#include +#include + +#include "../tests.h" + + +template +std::size_t +size_in_bytes(const Container &container) +{ + return sizeof(Container) + + (sizeof(typename Container::value_type) * container.size()); +} + + + +template +void +benchmark(const unsigned int n_global_refinements) +{ + // be generous with the estimate + const std::size_t size_estimate_per_cellid_in_bytes = 96; + + TimerOutput computing_timer(std::cout, + TimerOutput::summary, + TimerOutput::wall_times); + + Triangulation tria; + GridGenerator::hyper_cube(tria); + tria.refine_global(n_global_refinements); + + const unsigned int n_cells = tria.n_active_cells(); + + + // + // create + // + std::vector cell_ids; + cell_ids.reserve(n_cells); + { + TimerOutput::Scope t(computing_timer, "cell->id"); + + for (const auto &cell : tria.active_cell_iterators()) + cell_ids.push_back(cell->id()); + } + deallog << "Creation successful." << std::endl + << " Number of CellId objects: " << cell_ids.size() << std::endl; + + + // + // boost binary archive + // + { + std::string buffer; + buffer.reserve(n_cells * size_estimate_per_cellid_in_bytes); + std::vector deserialized; + deserialized.reserve(n_cells); + { + TimerOutput::Scope t(computing_timer, "boost binary_archive save"); + + boost::iostreams::filtering_ostreambuf fosb; + fosb.push(boost::iostreams::back_inserter(buffer)); + boost::archive::binary_oarchive oa(fosb); + oa & cell_ids; + } + { + TimerOutput::Scope t(computing_timer, "boost binary_archive load"); + + boost::iostreams::filtering_istreambuf fisb; + fisb.push(boost::iostreams::array_source(buffer.data(), buffer.size())); + boost::archive::binary_iarchive ia(fisb); + ia & deserialized; + } + AssertThrow(cell_ids == deserialized, + ExcMessage("Serialization with boost binary archives failed.")); + deallog << "Serialization with boost binary archives successful." + << std::endl + << " Buffer size in bytes: " << size_in_bytes(buffer) << std::endl; + } + + + // + // Utilities uncompressed + // + { + std::vector buffer; + buffer.reserve(n_cells * size_estimate_per_cellid_in_bytes); + std::vector sizes; + sizes.reserve(n_cells); + std::vector deserialized; + deserialized.reserve(n_cells); + { + TimerOutput::Scope t(computing_timer, "Utilities::pack uncompressed"); + + for (const auto &cell_id : cell_ids) + sizes.push_back( + Utilities::pack(cell_id, buffer, /*allow_compression*/ false)); + } + { + TimerOutput::Scope t(computing_timer, "Utilities::unpack uncompressed"); + + std::vector::const_iterator cbegin = buffer.cbegin(), cend; + for (const auto &size : sizes) + { + cend = cbegin + size; + deserialized.push_back(Utilities::unpack( + cbegin, cend, /*allow_compression*/ false)); + cbegin = cend; + } + Assert(cend == buffer.cend(), ExcInternalError()); + } + AssertThrow(cell_ids == deserialized, + ExcMessage("Serialization with Utilities failed.")); + deallog << "Serialization with Utilities successful." << std::endl + << " Buffer size in bytes: " << size_in_bytes(buffer) << std::endl; + } + + + // + // binary representation + // + { + std::vector buffer; + buffer.reserve(n_cells); + std::vector deserialized; + deserialized.reserve(n_cells); + { + TimerOutput::Scope t(computing_timer, "CellId::to_binary"); + + for (const auto &cell_id : cell_ids) + buffer.push_back(cell_id.to_binary()); + } + { + TimerOutput::Scope t(computing_timer, "CellId from binary"); + + for (const auto &binary : buffer) + deserialized.emplace_back(binary); + } + AssertThrow(cell_ids == deserialized, + ExcMessage("Serialization with binary representation failed.")); + deallog << "Serialization with binary representation successful." + << std::endl + << " Buffer size in bytes: " << size_in_bytes(buffer) << std::endl; + } + + deallog << "OK" << std::endl; +} + + + +int +main() +{ + initlog(); + + benchmark<2>(4); + // benchmark<3>(8); +} diff --git a/tests/grid/cell_id_08.output b/tests/grid/cell_id_08.output new file mode 100644 index 0000000000..22ff31e140 --- /dev/null +++ b/tests/grid/cell_id_08.output @@ -0,0 +1,10 @@ + +DEAL::Creation successful. +DEAL:: Number of CellId objects: 256 +DEAL::Serialization with boost binary archives successful. +DEAL:: Buffer size in bytes: 11875 +DEAL::Serialization with Utilities successful. +DEAL:: Buffer size in bytes: 10264 +DEAL::Serialization with binary representation successful. +DEAL:: Buffer size in bytes: 4120 +DEAL::OK