timer.h File Reference

This class allows calculation and display of various time data including remaining runtime data in cpu and in user time. More...

#include <sys/time.h>
#include <iostream>
#include <iomanip>
#include <stdio.h>
#include "io/ostreamManager.h"
#include "io/xmlReader.h"
#include "core/unitConverter.h"

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Classes
class	olb::util::Timer< T >
	How to use in Code: More...

Namespaces
namespace	olb
	Top level namespace for all of OpenLB.
namespace	olb::util

Functions
template<typename T , typename DESCRIPTOR >
Timer< T > *	olb::util::createTimer (XMLreader &param, const UnitConverter< T, DESCRIPTOR > &converter, size_t numLatticePoints)

Detailed Description

This class allows calculation and display of various time data including remaining runtime data in cpu and in user time.

Output is possible during computation and as a summary after computation. Time can be measured independently from in-computation-calls which allows time statistics without touching the overall computation time of the LBM-algorithm. Moreover it is possible to determine a performance number, the Mega DESCRIPTOR Updates per second (MLUPs). The template type T denotes the internal representation of time differences (in ms, s and for cpu-time). Reasonable values are eg. double and long. Some thoughts about data range: Actually, only positive numbers should occur (=> unsigned). The chosen data format should be capable of representing at least 7 days ( = 604.800.000 ms) of computation time. The biggest signed long32 number ist 2.147.483.647 (~3 1/2 weeks), great! For everything above, use double with it's floating point arithmetic.

Definition in file timer.h.