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/*
* Copyright (C) 2011 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_mpi.h"
#include "operator_sse_compressed.h"
#include "engine_sse_compressed.h"
#include "engine_mpi.h"
#include "extensions/operator_extension.h"
#include "tools/array_ops.h"
#include "tools/useful.h"
#include "mpi.h"
Operator_MPI* Operator_MPI::New()
{
cout << "Create FDTD operator (compressed SSE + MPI)" << endl;
Operator_MPI* op = new Operator_MPI();
op->Init();
return op;
}
Operator_MPI::Operator_MPI() : Operator_SSE_Compressed()
{
m_NumProc = MPI::COMM_WORLD.Get_size();
//enabled only if more than one process is active
m_MPI_Enabled = m_NumProc>1;
}
Operator_MPI::~Operator_MPI()
{
Delete();
}
double Operator_MPI::CalcTimestep()
{
double ret = Operator::CalcTimestep();
if (!m_MPI_Enabled)
return ret;
double local_dT = dT;
//find the smallest time-step requestes by all processings
MPI_Reduce(&local_dT, &dT, 1, MPI_DOUBLE, MPI_MIN, 0, MPI_COMM_WORLD);
//send the smallest time-step to all
MPI_Bcast(&dT, 1, MPI_DOUBLE, 0, MPI_COMM_WORLD);
return ret;
}
void Operator_MPI::SetBoundaryCondition(int* BCs)
{
if (!m_MPI_Enabled)
return Operator_SSE_Compressed::SetBoundaryCondition(BCs);
//set boundary conditions on MPI interfaces to PEC, ApplyElectricBC will handle proper interface handling...
for (int n=0;n<3;++n)
{
if (m_NeighborUp[n]>=0)
BCs[2*n+1] = 0;
if (m_NeighborDown[n]>=0)
BCs[2*n] = 0;
}
Operator_SSE_Compressed::SetBoundaryCondition(BCs);
}
Engine* Operator_MPI::CreateEngine()
{
if (m_MPI_Enabled)
m_Engine = Engine_MPI::New(this);
else
m_Engine = Engine_SSE_Compressed::New(this);
return m_Engine;
}
void Operator_MPI::SetNeighborUp(int ny, int id)
{
if ((ny<0) || (ny>2))
return;
m_NeighborUp[ny]=id;
}
void Operator_MPI::SetNeighborDown(int ny, int id)
{
if ((ny<0) || (ny>2))
return;
m_NeighborDown[ny]=id;
}
void Operator_MPI::Init()
{
Operator_SSE_Compressed::Init();
m_MyTag = 0;
for (int i=0;i<3;++i)
{
m_NeighborUp[i]=-1;
m_NeighborDown[i]=-1;
m_OrigDiscLines[i]=NULL;
}
m_ProcTable = NULL;
m_SplitNumber[0]=0;
m_SplitNumber[1]=0;
m_SplitNumber[2]=0;
int namelen;
m_NumProc = MPI::COMM_WORLD.Get_size();
m_MyID = MPI::COMM_WORLD.Get_rank();
m_Processor_Name = new char[MPI_MAX_PROCESSOR_NAME];
MPI::Get_processor_name(m_Processor_Name,namelen);
if ((m_MPI_Enabled) && (g_settings.GetVerboseLevel()>0))
cerr << "Operator_MPI::Init(): Running on " << m_Processor_Name << endl;
}
void Operator_MPI::Delete()
{
delete[] m_Processor_Name;
m_Processor_Name = NULL;
for (int i=0;i<3;++i)
{
delete[] m_OrigDiscLines[i];
m_OrigDiscLines[i] = NULL;
}
Delete3DArray(m_ProcTable,m_SplitNumber);
m_ProcTable=NULL;
}
void Operator_MPI::Reset()
{
Delete();
Operator_SSE_Compressed::Reset();
}
void Operator_MPI::SetOriginalMesh(CSRectGrid* orig_Mesh)
{
for (int n=0;n<3;++n)
{
delete[] m_OrigDiscLines[n];
m_OrigDiscLines[n] = orig_Mesh->GetLines(n,NULL,m_OrigNumLines[n]);
}
}
unsigned int Operator_MPI::GetNumberOfLines(int ny, bool fullMesh) const
{
if (fullMesh)
return Operator_SSE_Compressed::GetNumberOfLines(ny,fullMesh);
if ((!m_MPI_Enabled) || (m_NeighborUp[ny]<0))
return Operator_SSE_Compressed::GetNumberOfLines(ny,fullMesh);
return Operator_SSE_Compressed::GetNumberOfLines(ny)-1;
}
void Operator_MPI::AddExtension(Operator_Extension* op_ext)
{
if (m_MPI_Enabled==false)
return Operator_SSE_Compressed::AddExtension(op_ext);
if (op_ext->IsMPISave())
Operator_SSE_Compressed::AddExtension(op_ext);
else
{
cerr << "Operator_MPI::AddExtension: Warning: Operator extension \"" << op_ext->GetExtensionName() << "\" is not compatible with MPI!! skipping...!" << endl;
delete op_ext;
}
}
string Operator_MPI::PrependRank(string name)
{
stringstream out_name;
if (m_MPI_Enabled)
out_name << "ID" << m_MyID << "_" << name;
else
out_name << name;
return out_name.str();
}
void Operator_MPI::DumpOperator2File(string filename)
{
Operator_SSE_Compressed::DumpOperator2File(PrependRank(filename));
}
void Operator_MPI::DumpMaterial2File(string filename)
{
Operator_SSE_Compressed::DumpMaterial2File(PrependRank(filename));
}
void Operator_MPI::DumpPEC2File(string filename , unsigned int *range)
{
Operator_SSE_Compressed::DumpPEC2File(PrependRank(filename), range);
}
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