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// Copyright (C) 2003-2016 Anders Logg
//
// This file is part of DOLFINx (https://www.fenicsproject.org)
//
// SPDX-License-Identifier: LGPL-3.0-or-later
#include "TimeLogger.h"
#include "MPI.h"
#include "log.h"
#include <iostream>
using namespace dolfinx;
using namespace dolfinx::common;
//-----------------------------------------------------------------------------
TimeLogger& TimeLogger::instance()
{
static TimeLogger _instance{};
return _instance;
}
//-----------------------------------------------------------------------------
void TimeLogger::register_timing(
const std::string& task, std::chrono::duration<double, std::ratio<1>> time)
{
// Print a message
std::string line
= "Elapsed time: " + std::to_string(time.count()) + " (" + task + ")";
spdlog::debug(line.c_str());
// Store values for summary
if (auto it = _timings.find(task); it != _timings.end())
{
std::get<0>(it->second) += 1;
std::get<1>(it->second) += time;
}
else
_timings.insert({task, {1, time}});
}
//-----------------------------------------------------------------------------
void TimeLogger::list_timings(MPI_Comm comm, Table::Reduction reduction) const
{
// Format and reduce to rank 0
Table timings = this->timing_table();
timings = timings.reduce(comm, reduction);
const std::string str = "\n" + timings.str();
// Print just on rank 0
if (dolfinx::MPI::rank(comm) == 0)
std::cout << str << '\n';
}
//-----------------------------------------------------------------------------
Table TimeLogger::timing_table() const
{
// Generate log::timing table
Table table("Summary of timings (s)");
for (auto& it : _timings)
{
std::string task = it.first;
auto [num_timings, time] = it.second;
table.set(task, "reps", num_timings);
table.set(task, "avg", time.count() / static_cast<double>(num_timings));
table.set(task, "tot", time.count());
}
return table;
}
//-----------------------------------------------------------------------------
std::pair<int, std::chrono::duration<double, std::ratio<1>>>
TimeLogger::timing(const std::string& task) const
{
// Find timing
auto it = _timings.find(task);
if (it == _timings.end())
{
throw std::runtime_error("No timings registered for task \"" + task
+ "\".");
}
return it->second;
}
//-----------------------------------------------------------------------------
std::map<std::string,
std::pair<int, std::chrono::duration<double, std::ratio<1>>>>
TimeLogger::timings() const
{
return _timings;
}
//-----------------------------------------------------------------------------
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