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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM 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.
OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Application
parallelTest
Description
Test for various parallel routines.
\*---------------------------------------------------------------------------*/
#include "List.H"
#include "mapDistribute.H"
#include "argList.H"
#include "Time.H"
#include "IPstream.H"
#include "OPstream.H"
#include "vector.H"
#include "IOstreams.H"
#include "Random.H"
#include "Tuple2.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
int main(int argc, char *argv[])
{
#include "setRootCase.H"
#include "createTime.H"
// Test mapDistribute
// ~~~~~~~~~~~~~~~~~~
if (true)
{
Random rndGen(43544*Pstream::myProcNo());
// Generate random data.
List<Tuple2<label, List<scalar>>> complexData(100);
forAll(complexData, i)
{
complexData[i].first() = rndGen.integer(0, Pstream::nProcs()-1);
complexData[i].second().setSize(3);
complexData[i].second()[0] = 1;
complexData[i].second()[1] = 2;
complexData[i].second()[2] = 3;
}
// Send all ones to processor indicated by .first()
// Count how many to send
labelList nSend(Pstream::nProcs(), 0);
forAll(complexData, i)
{
label proci = complexData[i].first();
nSend[proci]++;
}
// Collect items to be sent
labelListList sendMap(Pstream::nProcs());
forAll(sendMap, proci)
{
sendMap[proci].setSize(nSend[proci]);
}
nSend = 0;
forAll(complexData, i)
{
label proci = complexData[i].first();
sendMap[proci][nSend[proci]++] = i;
}
// Sync how many to send
labelList nRecv;
Pstream::exchangeSizes(sendMap, nRecv);
// Collect items to be received
labelListList recvMap(Pstream::nProcs());
forAll(recvMap, proci)
{
recvMap[proci].setSize(nRecv[proci]);
}
label constructSize = 0;
// Construct with my own elements first
forAll(recvMap[Pstream::myProcNo()], i)
{
recvMap[Pstream::myProcNo()][i] = constructSize++;
}
// Construct from other processors
forAll(recvMap, proci)
{
if (proci != Pstream::myProcNo())
{
forAll(recvMap[proci], i)
{
recvMap[proci][i] = constructSize++;
}
}
}
// Construct distribute map (destructively)
mapDistribute map(constructSize, sendMap.xfer(), recvMap.xfer());
// Distribute complexData
map.distribute(complexData);
Pout<< "complexData:" << complexData << endl;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Perr<< "\nStarting transfers\n" << endl;
vector data(0, 1, 2);
if (Pstream::parRun())
{
if (Pstream::myProcNo() != Pstream::masterNo())
{
{
Perr<< "slave sending to master "
<< Pstream::masterNo() << endl;
OPstream toMaster(Pstream::blocking, Pstream::masterNo());
toMaster << data;
}
Perr<< "slave receiving from master "
<< Pstream::masterNo() << endl;
IPstream fromMaster(Pstream::blocking, Pstream::masterNo());
fromMaster >> data;
Perr<< data << endl;
}
else
{
for
(
int slave=Pstream::firstSlave();
slave<=Pstream::lastSlave();
slave++
)
{
Perr << "master receiving from slave " << slave << endl;
IPstream fromSlave(Pstream::blocking, slave);
fromSlave >> data;
Perr<< data << endl;
}
for
(
int slave=Pstream::firstSlave();
slave<=Pstream::lastSlave();
slave++
)
{
Perr << "master sending to slave " << slave << endl;
OPstream toSlave(Pstream::blocking, slave);
toSlave << data;
}
}
}
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //
|
