mirror of
https://github.com/NGSolve/netgen.git
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306 lines
7.8 KiB
C++
306 lines
7.8 KiB
C++
#ifndef NETGEN_CORE_PROFILER_HPP
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#define NETGEN_CORE_PROFILER_HPP
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#include <array>
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#include <chrono>
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#include <string>
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#include "logging.hpp"
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#include "paje_trace.hpp"
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#include "utils.hpp"
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namespace ngcore
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{
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class NgProfiler
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{
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public:
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/// maximal number of timers
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enum { SIZE = 8*1024 };
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struct TimerVal
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{
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TimerVal() = default;
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double tottime = 0.0;
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TTimePoint starttime=0;
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double flops = 0.0;
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double loads = 0.0;
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double stores = 0.0;
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long count = 0;
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std::string name = "";
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int usedcounter = 0;
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};
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NGCORE_API static std::vector<TimerVal> timers;
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NGCORE_API static TTimePoint * thread_times;
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NGCORE_API static TTimePoint * thread_flops;
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NGCORE_API static std::shared_ptr<Logger> logger;
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NGCORE_API static std::array<size_t, NgProfiler::SIZE> dummy_thread_times;
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NGCORE_API static std::array<size_t, NgProfiler::SIZE> dummy_thread_flops;
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private:
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NGCORE_API static std::string filename;
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public:
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NgProfiler();
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~NgProfiler();
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NgProfiler(const NgProfiler &) = delete;
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NgProfiler(NgProfiler &&) = delete;
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void operator=(const NgProfiler &) = delete;
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void operator=(NgProfiler &&) = delete;
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static void SetFileName (const std::string & afilename) { filename = afilename; }
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/// create new timer, use integer index
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NGCORE_API static int CreateTimer (const std::string & name);
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NGCORE_API static void Reset ();
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/// start timer of index nr
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static void StartTimer (int nr)
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{
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timers[nr].starttime = GetTimeCounter(); timers[nr].count++;
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}
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/// stop timer of index nr
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static void StopTimer (int nr)
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{
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timers[nr].tottime += (GetTimeCounter()-timers[nr].starttime)*seconds_per_tick;
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}
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static void StartThreadTimer (size_t nr, size_t tid)
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{
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thread_times[tid*SIZE+nr] -= GetTimeCounter(); // NOLINT
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}
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static void StopThreadTimer (size_t nr, size_t tid)
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{
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thread_times[tid*SIZE+nr] += GetTimeCounter(); // NOLINT
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}
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static void AddThreadFlops (size_t nr, size_t tid, size_t flops)
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{
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thread_flops[tid*SIZE+nr] += flops; // NOLINT
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}
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/// if you know number of flops, provide them to obtain the MFlop - rate
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static void AddFlops (int nr, double aflops) { timers[nr].flops += aflops; }
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static void AddLoads (int nr, double aloads) { timers[nr].loads += aloads; }
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static void AddStores (int nr, double astores) { timers[nr].stores += astores; }
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static int GetNr (const std::string & name)
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{
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for (int i = SIZE-1; i >= 0; i--)
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if (timers[i].name == name)
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return i;
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return -1;
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}
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static double GetTime (int nr)
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{
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return timers[nr].tottime;
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}
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static double GetTime (const std::string & name)
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{
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for (int i = SIZE-1; i >= 0; i--)
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if (timers[i].name == name)
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return GetTime (i);
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return 0;
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}
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static long int GetCounts (int nr)
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{
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return timers[nr].count;
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}
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static double GetFlops (int nr)
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{
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return timers[nr].flops;
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}
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/// change name
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static void SetName (int nr, const std::string & name) { timers[nr].name = name; }
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static std::string GetName (int nr) { return timers[nr].name; }
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/// print profile
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NGCORE_API static void Print (FILE * prof);
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class RegionTimer
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{
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int nr;
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public:
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/// start timer
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RegionTimer (int anr) : nr(anr) { NgProfiler::StartTimer(nr); }
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/// stop timer
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~RegionTimer () { NgProfiler::StopTimer(nr); }
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RegionTimer() = delete;
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RegionTimer(const RegionTimer &) = delete;
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RegionTimer(RegionTimer &&) = delete;
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void operator=(const RegionTimer &) = delete;
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void operator=(RegionTimer &&) = delete;
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};
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};
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class NGCORE_API Timer
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{
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int timernr;
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int priority;
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public:
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Timer (const std::string & name, int apriority = 1)
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: priority(apriority)
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{
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timernr = NgProfiler::CreateTimer (name);
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}
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void SetName (const std::string & name)
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{
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NgProfiler::SetName (timernr, name);
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}
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void Start ()
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{
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if (priority <= 2)
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NgProfiler::StartTimer (timernr);
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if (priority <= 1)
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if(trace) trace->StartTimer(timernr);
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}
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void Stop ()
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{
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if (priority <= 2)
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NgProfiler::StopTimer (timernr);
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if (priority <= 1)
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if(trace) trace->StopTimer(timernr);
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}
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void AddFlops (double aflops)
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{
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if (priority <= 2)
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NgProfiler::AddFlops (timernr, aflops);
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}
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double GetTime () { return NgProfiler::GetTime(timernr); }
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long int GetCounts () { return NgProfiler::GetCounts(timernr); }
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double GetMFlops ()
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{ return NgProfiler::GetFlops(timernr)
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/ NgProfiler::GetTime(timernr) * 1e-6; }
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operator int () { return timernr; }
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};
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/**
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Timer object.
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Start / stop timer at constructor / destructor.
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*/
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class RegionTimer
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{
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Timer & timer;
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public:
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/// start timer
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RegionTimer (Timer & atimer) : timer(atimer) { timer.Start(); }
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/// stop timer
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~RegionTimer () { timer.Stop(); }
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RegionTimer() = delete;
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RegionTimer(const RegionTimer &) = delete;
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RegionTimer(RegionTimer &&) = delete;
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void operator=(const RegionTimer &) = delete;
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void operator=(RegionTimer &&) = delete;
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};
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class ThreadRegionTimer
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{
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size_t nr;
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size_t tid;
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public:
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/// start timer
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ThreadRegionTimer (size_t _nr, size_t _tid) : nr(_nr), tid(_tid)
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{ NgProfiler::StartThreadTimer(nr, tid); }
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/// stop timer
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~ThreadRegionTimer ()
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{ NgProfiler::StopThreadTimer(nr, tid); }
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ThreadRegionTimer() = delete;
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ThreadRegionTimer(ThreadRegionTimer &&) = delete;
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ThreadRegionTimer(const ThreadRegionTimer &) = delete;
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void operator=(const ThreadRegionTimer &) = delete;
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void operator=(ThreadRegionTimer &&) = delete;
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};
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class RegionTracer
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{
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int nr;
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int thread_id;
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public:
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static constexpr int ID_JOB = PajeTrace::Task::ID_JOB;
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static constexpr int ID_NONE = PajeTrace::Task::ID_NONE;
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static constexpr int ID_TIMER = PajeTrace::Task::ID_TIMER;
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RegionTracer() = delete;
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RegionTracer(RegionTracer &&) = delete;
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RegionTracer(const RegionTracer &) = delete;
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void operator=(const RegionTracer &) = delete;
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void operator=(RegionTracer &&) = delete;
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/// start trace
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RegionTracer (int athread_id, int region_id, int id_type = ID_NONE, int additional_value = -1 )
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: thread_id(athread_id)
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{
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if (trace)
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nr = trace->StartTask (athread_id, region_id, id_type, additional_value);
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}
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/// start trace with timer
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RegionTracer (int athread_id, Timer & timer, int additional_value = -1 )
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: thread_id(athread_id)
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{
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if (trace)
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nr = trace->StartTask (athread_id, static_cast<int>(timer), ID_TIMER, additional_value);
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}
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/// set user defined value
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void SetValue( int additional_value )
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{
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if (trace)
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trace->SetTask( thread_id, nr, additional_value );
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}
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/// stop trace
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~RegionTracer ()
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{
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if (trace)
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trace->StopTask (thread_id, nr);
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}
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};
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// Helper function for timings
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// Run f() at least min_iterations times until max_time seconds elapsed
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// returns minimum runtime for a call of f()
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template<typename TFunc>
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double RunTiming( TFunc f, double max_time = 0.5, int min_iterations = 10 )
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{
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// Make sure the whole test run does not exceed maxtime
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double tend = WallTime()+max_time;
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// warmup
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f();
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double tres = std::numeric_limits<double>::max();
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int iteration = 0;
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while(WallTime()<tend || iteration++ < min_iterations)
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{
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double t = -WallTime();
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f();
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t += WallTime();
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tres = std::min(tres, t);
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}
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return tres;
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}
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} // namespace ngcore
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#endif // NETGEN_CORE_PROFILER_HPP
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