forked from lijiext/lammps
85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/* ----------------------------------------------------------------------
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LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
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http://lammps.sandia.gov, Sandia National Laboratories
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Steve Plimpton, sjplimp@sandia.gov
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Copyright (2003) Sandia Corporation. Under the terms of Contract
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DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
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certain rights in this software. This software is distributed under
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the GNU General Public License.
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See the README file in the top-level LAMMPS directory.
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------------------------------------------------------------------------- */
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#include "mpi.h"
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#include "timer.h"
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#include "memory.h"
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using namespace LAMMPS_NS;
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/* ---------------------------------------------------------------------- */
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Timer::Timer(LAMMPS *lmp) : Pointers(lmp)
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{
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memory->create(array,TIME_N,"array");
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}
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/* ---------------------------------------------------------------------- */
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Timer::~Timer()
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{
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memory->destroy(array);
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}
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/* ---------------------------------------------------------------------- */
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void Timer::init()
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{
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for (int i = 0; i < TIME_N; i++) array[i] = 0.0;
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}
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/* ---------------------------------------------------------------------- */
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void Timer::stamp()
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{
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// uncomment if want synchronized timing
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// MPI_Barrier(world);
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previous_time = MPI_Wtime();
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}
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/* ---------------------------------------------------------------------- */
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void Timer::stamp(int which)
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{
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// uncomment if want synchronized timing
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// MPI_Barrier(world);
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double current_time = MPI_Wtime();
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array[which] += current_time - previous_time;
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previous_time = current_time;
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}
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/* ---------------------------------------------------------------------- */
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void Timer::barrier_start(int which)
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{
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MPI_Barrier(world);
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array[which] = MPI_Wtime();
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}
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/* ---------------------------------------------------------------------- */
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void Timer::barrier_stop(int which)
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{
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MPI_Barrier(world);
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double current_time = MPI_Wtime();
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array[which] = current_time - array[which];
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}
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/* ---------------------------------------------------------------------- */
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double Timer::elapsed(int which)
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{
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double current_time = MPI_Wtime();
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return (current_time - array[which]);
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}
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