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Tue, Nov 5, 17:30

timer.h
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/* -*- c++ -*- ----------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#ifndef LMP_TIMER_H
#define LMP_TIMER_H
#include "pointers.h"
namespace LAMMPS_NS {
class Timer : protected Pointers {
public:
enum ttype {RESET=-2,START=-1,TOTAL=0,PAIR,BOND,KSPACE,NEIGH,COMM,
MODIFY,OUTPUT,SYNC,ALL,DEPHASE,DYNAMICS,QUENCH,NEB,REPCOMM,
REPOUT,NUM_TIMER};
enum tlevel {OFF=0,LOOP,NORMAL,FULL};
Timer(class LAMMPS *);
~Timer() {};
void init();
// inline function to reduce overhead if we want no detailed timings
void stamp(enum ttype which=START) {
if (_level > LOOP) _stamp(which);
}
void barrier_start();
void barrier_stop();
// accessor methods for supported level of detail
bool has_loop() const { return (_level >= LOOP); }
bool has_normal() const { return (_level >= NORMAL); }
bool has_full() const { return (_level >= FULL); }
bool has_sync() const { return (_sync != OFF); }
// flag if wallclock time is expired
bool is_timeout() const { return (_timeout == 0.0); }
double elapsed(enum ttype);
double cpu(enum ttype);
double get_cpu(enum ttype which) const {
return cpu_array[which]; };
double get_wall(enum ttype which) const {
return wall_array[which]; };
void set_wall(enum ttype, double);
// initialize timeout timer
void init_timeout();
// trigger enforced timeout
void force_timeout() { _timeout = 0.0; };
// get remaining time in seconds. 0.0 if inactive, negative if expired
double get_timeout_remain();
// print timeout message
void print_timeout(FILE *);
// check for timeout. inline wrapper around internal
// function to reduce overhead in case there is no check.
bool check_timeout(int step) {
if (_nextcheck != step) return false;
else return _check_timeout();
}
void modify_params(int, char **);
private:
double cpu_array[NUM_TIMER];
double wall_array[NUM_TIMER];
double previous_cpu;
double previous_wall;
double timeout_start;
int _level; // level of detail: off=0,loop=1,normal=2,full=3
int _sync; // if nonzero, synchronize tasks before setting the timer
int _timeout; // max allowed wall time in seconds. infinity if negative
int _checkfreq; // frequency of timeout checking
int _nextcheck; // timestep number of next timeout check
// update one specific timer array
void _stamp(enum ttype);
// check for timeout
bool _check_timeout();
};
}
#endif
/* ERROR/WARNING messages:
E: Illegal ... command
Self-explanatory. Check the input script syntax and compare to the
documentation for the command. You can use -echo screen as a
command-line option when running LAMMPS to see the offending line.
*/

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