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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
globalIndexTest
Description
Simple demonstration and test application for the globalIndex class.
\*---------------------------------------------------------------------------*/
#include "globalIndex.H"
#include "argList.H"
#include "Time.H"
#include "polyMesh.H"
#include "IOstreams.H"
#include "OStringStream.H"
#include "IStringStream.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:
int main(int argc, char *argv[])
{
#include "setRootCase.H"
#include "createTime.H"
#include "createPolyMesh.H"
// Global numbering of cells (proc0 elements first, then proc1, etc.)
globalIndex globalNumbering(mesh.nCells());
if (globalNumbering.localSize() != mesh.nCells())
{
FatalErrorInFunction
<< "Problem." << abort(FatalError);
}
if (!Pstream::parRun())
{
WarningInFunction
<< "globalIndex class is only useful in parallel code."
<< endl;
}
// convert from local to global and back.
for (label celli = 0; celli < mesh.nCells(); celli++)
{
// to global index
label globalCelli = globalNumbering.toGlobal(celli);
// and back
label proci = globalNumbering.whichProcID(globalCelli);
label localCelli = globalNumbering.toLocal(globalCelli);
if (proci != Pstream::myProcNo() || localCelli != celli)
{
FatalErrorInFunction
<< "Problem. celli:" << celli << " localCelli:" << localCelli
<< " proci:" << proci << abort(FatalError);
}
if (!globalNumbering.isLocal(globalCelli))
{
FatalErrorInFunction
<< "Problem. celli:" << celli << " globalCelli:" << globalCelli
<< " not local" << abort(FatalError);
}
}
// Try whichProcID on a few borderline cases.
if (mesh.nCells() < 1)
{
FatalErrorInFunction
<< "Test needs to be run on a case with at least one"
<< " cell per processor." << abort(FatalError);
}
if (Pstream::myProcNo() > 0)
{
// We already checked that toGlobal(0) maps back correctly to myProcNo
// so now check that the index one before maps to the previous processor
label prevProcCelli = globalNumbering.toGlobal(0)-1;
label proci = globalNumbering.whichProcID(prevProcCelli);
if (proci != Pstream::myProcNo()-1)
{
FatalErrorInFunction
<< "Problem. global:" << prevProcCelli
<< " expected on processor:" << Pstream::myProcNo()-1
<< " but is calculated to be on proci:" << proci
<< abort(FatalError);
}
if (globalNumbering.isLocal(prevProcCelli))
{
FatalErrorInFunction
<< "Problem. globalCelli:" << prevProcCelli
<< " calculated as local" << abort(FatalError);
}
if (!globalNumbering.isLocal(proci, prevProcCelli))
{
FatalErrorInFunction
<< "Problem. globalCelli:" << prevProcCelli
<< " not calculated as local on processor:" << proci
<< abort(FatalError);
}
}
if (Pstream::myProcNo() < Pstream::nProcs()-1)
{
label nextProcCelli = globalNumbering.toGlobal(mesh.nCells()-1)+1;
label proci = globalNumbering.whichProcID(nextProcCelli);
if (proci != Pstream::myProcNo()+1)
{
FatalErrorInFunction
<< "Problem. global:" << nextProcCelli
<< " expected on processor:" << Pstream::myProcNo()+1
<< " but is calculated to be on proci:" << proci
<< abort(FatalError);
}
if (globalNumbering.isLocal(nextProcCelli))
{
FatalErrorInFunction
<< "Problem. globalCelli:" << nextProcCelli
<< " calculated as local" << abort(FatalError);
}
if (!globalNumbering.isLocal(proci, nextProcCelli))
{
FatalErrorInFunction
<< "Problem. globalCelli:" << nextProcCelli
<< " not calculated as local on processor:" << proci
<< abort(FatalError);
}
}
return 0;
}
// ************************************************************************* //
|
