RandDENS Class Reference

#include <randdens.h>

Inheritance diagram for RandDENS:

Collaboration diagram for RandDENS:

Public Member Functions
	RandDENS ()
virtual	~RandDENS ()
virtual TskComAgent *	scheduleTask (CloudTask *task, std::vector< ResourceProvider * > providers)
Public Member Functions inherited from ProbabilisticScheduler
	ProbabilisticScheduler ()
virtual	~ProbabilisticScheduler ()
Public Member Functions inherited from ScoreScheduler
	ScoreScheduler ()
virtual	~ScoreScheduler ()
Public Member Functions inherited from DcScheduler
	DcScheduler ()
virtual	~DcScheduler ()

Private Member Functions
virtual double	calculateScore (ResourceProvider *rp)
double	densLoadFactor (double load, double epsilon)
double	linkLoadFactor (double load)

Private Attributes
double	epsilon

Detailed Description

MultiDENS scheduler. To meaningfully use it, enableDVFS on the resource providers used by this scheduler. TODO: add networking part of DENS.

Definition at line 21 of file randdens.h.

Constructor & Destructor Documentation

RandDENS::RandDENS

(

)

Definition at line 11 of file randdens.cc.

                   : epsilon(0.1){

}

RandDENS::~RandDENS ( )

virtual

Definition at line 15 of file randdens.cc.

                    {

}

Member Function Documentation

double RandDENS::calculateScore ( ResourceProvider *  rp )

privatevirtual

Implements ProbabilisticScheduler.

Definition at line 23 of file randdens.cc.

                                                   {
                double result = 0;
                double load;
                for(int i = FirstResType; i <= LastResType ; i++){
                                load = rp->getResTypeUtil(static_cast<res_type>(i));
                                result+= densLoadFactor(load,epsilon);
                }
                result=result/(LastResType+1); // normalize according to the number of dimensions

                result += linkLoadFactor(rp->getRootHost()->rack_->link_load);

                return result;
}

double RandDENS::densLoadFactor ( double  load, double  epsilon  )

private

Definition at line 37 of file randdens.cc.

                                                         {
                return 1/(1+exp(-10*(load-0.5))) - 1/(1+exp((-10/epsilon)*(load-(1-(epsilon/2)))));
}

double RandDENS::linkLoadFactor ( double  load )

private

Definition at line 41 of file randdens.cc.

                                          {
                return exp(-(load*load));
}

TskComAgent * RandDENS::scheduleTask ( CloudTask *  task, std::vector< ResourceProvider * >  providers  )

virtual

Reimplemented from ProbabilisticScheduler.

Definition at line 19 of file randdens.cc.

                                                                                           {
                return ProbabilisticScheduler::scheduleTask(task,providers);
}

Member Data Documentation

double RandDENS::epsilon

private

Definition at line 27 of file randdens.h.

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The documentation for this class was generated from the following files:

• randdens.h
• randdens.cc