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/*
* Copyright (C) 2010 Thorsten Liebig (Thorsten.Liebig@gmx.de)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "operator_multithread.h"
#include "engine_multithread.h"
#include "tools/useful.h"
Operator_Multithread* Operator_Multithread::New(unsigned int numThreads)
{
cout << "Create FDTD operator (compressed SSE + multi-threading)" << endl;
Operator_Multithread* op = new Operator_Multithread();
op->setNumThreads(numThreads);
op->Init();
return op;
}
Operator_Multithread::~Operator_Multithread()
{
Delete();
}
void Operator_Multithread::setNumThreads( unsigned int numThreads )
{
m_numThreads = numThreads;
}
Engine* Operator_Multithread::CreateEngine()
{
m_Engine = Engine_Multithread::New(this,m_numThreads);
return m_Engine;
}
Operator_Multithread::Operator_Multithread() : OPERATOR_MULTITHREAD_BASE()
{
m_CalcEC_Start=NULL;
m_CalcEC_Stop=NULL;
m_CalcPEC_Start=NULL;
m_CalcPEC_Stop=NULL;
}
void Operator_Multithread::Init()
{
OPERATOR_MULTITHREAD_BASE::Init();
m_CalcEC_Start=NULL;
m_CalcEC_Stop=NULL;
m_CalcPEC_Start=NULL;
m_CalcPEC_Stop=NULL;
}
void Operator_Multithread::Delete()
{
m_thread_group.join_all();
delete m_CalcEC_Start;
m_CalcEC_Start=NULL;
delete m_CalcEC_Stop;
m_CalcEC_Stop=NULL;
delete m_CalcPEC_Start;
m_CalcPEC_Start=NULL;
delete m_CalcPEC_Stop;
m_CalcPEC_Stop=NULL;
}
void Operator_Multithread::Reset()
{
Delete();
OPERATOR_MULTITHREAD_BASE::Reset();
}
void Operator_Multithread::CalcStartStopLines(unsigned int &numThreads, vector<unsigned int> &start, vector<unsigned int> &stop) const
{
vector<unsigned int> jpt = AssignJobs2Threads(numLines[0], numThreads, true);
numThreads = jpt.size();
start.resize(numThreads);
stop.resize(numThreads);
start.at(0)=0;
stop.at(0)=jpt.at(0)-1;
for (unsigned int n=1; n<numThreads; n++)
{
start.at(n) = stop.at(n-1)+1;
stop.at(n) = start.at(n) + jpt.at(n) - 1;
}
}
int Operator_Multithread::CalcECOperator( DebugFlags debugFlags )
{
if (m_numThreads == 0)
m_numThreads = boost::thread::hardware_concurrency();
vector<unsigned int> m_Start_Lines;
vector<unsigned int> m_Stop_Lines;
CalcStartStopLines( m_numThreads, m_Start_Lines, m_Stop_Lines );
if (g_settings.GetVerboseLevel()>0)
cout << "Multithreaded operator using " << m_numThreads << " threads." << std::endl;
m_thread_group.join_all();
delete m_CalcEC_Start;
m_CalcEC_Start = new boost::barrier(m_numThreads+1); // numThread workers + 1 controller
delete m_CalcEC_Stop;
m_CalcEC_Stop = new boost::barrier(m_numThreads+1); // numThread workers + 1 controller
delete m_CalcPEC_Start;
m_CalcPEC_Start = new boost::barrier(m_numThreads+1); // numThread workers + 1 controller
delete m_CalcPEC_Stop;
m_CalcPEC_Stop = new boost::barrier(m_numThreads+1); // numThread workers + 1 controller
for (unsigned int n=0; n<m_numThreads; n++)
{
boost::thread *t = new boost::thread( Operator_Thread(this,m_Start_Lines.at(n),m_Stop_Lines.at(n),n) );
m_thread_group.add_thread( t );
}
return OPERATOR_MULTITHREAD_BASE::CalcECOperator( debugFlags );
}
bool Operator_Multithread::Calc_EC()
{
if (CSX==NULL)
{
cerr << "CartOperator::Calc_EC: CSX not given or invalid!!!" << endl;
return false;
}
MainOp->SetPos(0,0,0);
m_CalcEC_Start->wait();
m_CalcEC_Stop->wait();
return true;
}
bool Operator_Multithread::CalcPEC()
{
m_Nr_PEC[0]=0;
m_Nr_PEC[1]=0;
m_Nr_PEC[2]=0;
m_Nr_PEC_thread = new unsigned int[m_numThreads][3];
m_CalcPEC_Start->wait();
m_CalcPEC_Stop->wait();
for (unsigned int t=0; t<m_numThreads; ++t)
for (int n=0; n<3; ++n)
m_Nr_PEC[n]+=m_Nr_PEC_thread[t][n];
CalcPEC_Curves();
delete[] m_Nr_PEC_thread;
return true;
}
Operator_Thread::Operator_Thread( Operator_Multithread* ptr, unsigned int start, unsigned int stop, unsigned int threadID )
{
m_start=start;
m_stop=stop;
m_threadID=threadID;
m_OpPtr = ptr;
}
void Operator_Thread::operator()()
{
//************** calculate EC (Calc_EC) ***********************//
m_OpPtr->m_CalcEC_Start->wait();
m_OpPtr->Calc_EC_Range(m_start,m_stop);
m_OpPtr->m_CalcEC_Stop->wait();
//************** calculate EC (Calc_EC) ***********************//
m_OpPtr->m_CalcPEC_Start->wait();
for (int n=0; n<3; ++n)
m_OpPtr->m_Nr_PEC_thread[m_threadID][n] = 0;
m_OpPtr->CalcPEC_Range(m_start,m_stop,m_OpPtr->m_Nr_PEC_thread[m_threadID]);
m_OpPtr->m_CalcPEC_Stop->wait();
}
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