865 lines
24 KiB
C++
865 lines
24 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.1
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Application
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redistributeMeshPar
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Description
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Redistributes existing decomposed mesh and fields according to the current
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settings in the decomposeParDict file.
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Must be run on maximum number of source and destination processors.
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Balances mesh and writes new mesh to new time directory.
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Can also work like decomposePar:
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# Create empty processors
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mkdir processor0
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..
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mkdir processorN
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# Copy undecomposed polyMesh
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cp -r constant processor0
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# Distribute
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mpirun -np ddd redistributeMeshPar -parallel
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\*---------------------------------------------------------------------------*/
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#include "fvMesh.H"
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#include "decompositionMethod.H"
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#include "PstreamReduceOps.H"
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#include "fvCFD.H"
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#include "fvMeshDistribute.H"
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#include "mapDistributePolyMesh.H"
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#include "IOobjectList.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Tolerance (as fraction of the bounding box). Needs to be fairly lax since
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// usually meshes get written with limited precision (6 digits)
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static const scalar defaultMergeTol = 1E-6;
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// Read mesh if available. Otherwise create empty mesh with same non-proc
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// patches as proc0 mesh. Requires all processors to have all patches
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// (and in same order).
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autoPtr<fvMesh> createMesh
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(
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const Time& runTime,
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const word& regionName,
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const fileName& instDir,
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const bool haveMesh
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)
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{
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Pout<< "Create mesh for time = "
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<< runTime.timeName() << nl << endl;
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IOobject io
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(
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regionName,
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instDir,
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runTime,
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IOobject::MUST_READ
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);
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if (!haveMesh)
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{
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// Create dummy mesh. Only used on procs that don't have mesh.
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fvMesh dummyMesh
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(
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io,
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xferCopy(pointField()),
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xferCopy(faceList()),
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xferCopy(labelList()),
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xferCopy(labelList()),
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false
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);
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Pout<< "Writing dummy mesh to " << dummyMesh.polyMesh::objectPath()
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<< endl;
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dummyMesh.write();
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}
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Pout<< "Reading mesh from " << io.objectPath() << endl;
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autoPtr<fvMesh> meshPtr(new fvMesh(io));
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fvMesh& mesh = meshPtr();
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// Determine patches.
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if (Pstream::master())
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{
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// Send patches
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for
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(
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int slave=Pstream::firstSlave();
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slave<=Pstream::lastSlave();
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slave++
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)
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{
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OPstream toSlave(Pstream::blocking, slave);
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toSlave << mesh.boundaryMesh();
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}
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}
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else
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{
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// Receive patches
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IPstream fromMaster(Pstream::blocking, Pstream::masterNo());
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PtrList<entry> patchEntries(fromMaster);
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if (haveMesh)
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{
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// Check master names against mine
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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forAll(patchEntries, patchI)
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{
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const entry& e = patchEntries[patchI];
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const word type(e.dict().lookup("type"));
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const word& name = e.keyword();
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if (type == processorPolyPatch::typeName)
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{
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break;
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}
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if (patchI >= patches.size())
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{
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FatalErrorIn
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(
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"createMesh(const Time&, const fileName&, const bool)"
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) << "Non-processor patches not synchronised."
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<< endl
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<< "Processor " << Pstream::myProcNo()
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<< " has only " << patches.size()
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<< " patches, master has "
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<< patchI
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<< exit(FatalError);
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}
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if
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(
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type != patches[patchI].type()
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|| name != patches[patchI].name()
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)
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{
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FatalErrorIn
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(
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"createMesh(const Time&, const fileName&, const bool)"
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) << "Non-processor patches not synchronised."
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<< endl
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<< "Master patch " << patchI
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<< " name:" << type
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<< " type:" << type << endl
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<< "Processor " << Pstream::myProcNo()
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<< " patch " << patchI
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<< " has name:" << patches[patchI].name()
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<< " type:" << patches[patchI].type()
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<< exit(FatalError);
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}
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}
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}
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else
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{
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// Add patch
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List<polyPatch*> patches(patchEntries.size());
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label nPatches = 0;
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forAll(patchEntries, patchI)
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{
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const entry& e = patchEntries[patchI];
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const word type(e.dict().lookup("type"));
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const word& name = e.keyword();
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if (type == processorPolyPatch::typeName)
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{
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break;
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}
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Pout<< "Adding patch:" << nPatches
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<< " name:" << name
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<< " type:" << type << endl;
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dictionary patchDict(e.dict());
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patchDict.remove("nFaces");
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patchDict.add("nFaces", 0);
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patchDict.remove("startFace");
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patchDict.add("startFace", 0);
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patches[patchI] = polyPatch::New
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(
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name,
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patchDict,
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nPatches++,
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mesh.boundaryMesh()
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).ptr();
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}
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patches.setSize(nPatches);
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mesh.addFvPatches(patches, false); // no parallel comms
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//// Write empty mesh now we have correct patches
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//meshPtr().write();
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}
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}
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if (!haveMesh)
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{
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// We created a dummy mesh file above. Delete it.
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Pout<< "Removing dummy mesh " << io.objectPath()
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<< endl;
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rmDir(io.objectPath());
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}
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// Force recreation of globalMeshData.
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mesh.clearOut();
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mesh.globalData();
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return meshPtr;
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}
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// Get merging distance when matching face centres
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scalar getMergeDistance
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(
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const argList& args,
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const Time& runTime,
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const boundBox& bb
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)
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{
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scalar mergeTol = defaultMergeTol;
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args.optionReadIfPresent("mergeTol", mergeTol);
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scalar writeTol =
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Foam::pow(scalar(10.0), -scalar(IOstream::defaultPrecision()));
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Info<< "Merge tolerance : " << mergeTol << nl
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<< "Write tolerance : " << writeTol << endl;
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if (runTime.writeFormat() == IOstream::ASCII && mergeTol < writeTol)
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{
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FatalErrorIn("getMergeDistance")
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<< "Your current settings specify ASCII writing with "
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<< IOstream::defaultPrecision() << " digits precision." << endl
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<< "Your merging tolerance (" << mergeTol
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<< ") is finer than this." << endl
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<< "Please change your writeFormat to binary"
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<< " or increase the writePrecision" << endl
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<< "or adjust the merge tolerance (-mergeTol)."
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<< exit(FatalError);
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}
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scalar mergeDist = mergeTol * bb.mag();
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Info<< "Overall meshes bounding box : " << bb << nl
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<< "Relative tolerance : " << mergeTol << nl
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<< "Absolute matching distance : " << mergeDist << nl
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<< endl;
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return mergeDist;
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}
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void printMeshData(Ostream& os, const polyMesh& mesh)
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{
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os << "Number of points: " << mesh.points().size() << nl
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<< " faces: " << mesh.faces().size() << nl
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<< " internal faces: " << mesh.faceNeighbour().size() << nl
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<< " cells: " << mesh.cells().size() << nl
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<< " boundary patches: " << mesh.boundaryMesh().size() << nl
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<< " point zones: " << mesh.pointZones().size() << nl
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<< " face zones: " << mesh.faceZones().size() << nl
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<< " cell zones: " << mesh.cellZones().size() << nl;
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}
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// Debugging: write volScalarField with decomposition for post-processing.
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void writeDecomposition
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(
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const word& name,
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const fvMesh& mesh,
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const labelList& decomp
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)
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{
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Info<< "Writing wanted cell distribution to volScalarField " << name
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<< " for post-processing purposes." << nl << endl;
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volScalarField procCells
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(
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IOobject
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(
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name,
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mesh.time().timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::AUTO_WRITE,
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false // do not register
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),
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mesh,
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dimensionedScalar(name, dimless, -1),
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zeroGradientFvPatchScalarField::typeName
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);
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forAll(procCells, cI)
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{
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procCells[cI] = decomp[cI];
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}
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procCells.write();
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}
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// Read vol or surface fields
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//template<class T, class Mesh>
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template<class GeoField>
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void readFields
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(
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const boolList& haveMesh,
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const fvMesh& mesh,
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const autoPtr<fvMeshSubset>& subsetterPtr,
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IOobjectList& allObjects,
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PtrList<GeoField>& fields
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)
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{
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//typedef GeometricField<T, fvPatchField, Mesh> fldType;
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// Get my objects of type
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IOobjectList objects(allObjects.lookupClass(GeoField::typeName));
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// Check that we all have all objects
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wordList objectNames = objects.toc();
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// Get master names
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wordList masterNames(objectNames);
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Pstream::scatter(masterNames);
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if (haveMesh[Pstream::myProcNo()] && objectNames != masterNames)
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{
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FatalErrorIn("readFields()")
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<< "differing fields of type " << GeoField::typeName
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<< " on processors." << endl
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<< "Master has:" << masterNames << endl
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<< Pstream::myProcNo() << " has:" << objectNames
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<< abort(FatalError);
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}
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fields.setSize(masterNames.size());
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// Have master send all fields to processors that don't have a mesh
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if (Pstream::master())
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{
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forAll(masterNames, i)
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{
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const word& name = masterNames[i];
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IOobject& io = *objects[name];
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io.writeOpt() = IOobject::AUTO_WRITE;
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// Load field
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fields.set(i, new GeoField(io, mesh));
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// Create zero sized field and send
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if (subsetterPtr.valid())
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{
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tmp<GeoField> tsubfld = subsetterPtr().interpolate(fields[i]);
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// Send to all processors that don't have a mesh
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for (label procI = 1; procI < Pstream::nProcs(); procI++)
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{
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if (!haveMesh[procI])
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{
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OPstream toProc(Pstream::blocking, procI);
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toProc<< tsubfld();
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}
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}
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}
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}
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}
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else if (!haveMesh[Pstream::myProcNo()])
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{
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// Don't have mesh (nor fields). Receive empty field from master.
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forAll(masterNames, i)
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{
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const word& name = masterNames[i];
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// Receive field
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IPstream fromMaster(Pstream::blocking, Pstream::masterNo());
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fields.set
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(
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i,
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new GeoField
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(
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IOobject
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(
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name,
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mesh.time().timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::AUTO_WRITE
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),
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mesh,
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fromMaster
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)
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);
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//// Write it for next time round (since mesh gets written as well)
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//fields[i].write();
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}
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}
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else
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{
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// Have mesh so just try to load
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forAll(masterNames, i)
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{
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const word& name = masterNames[i];
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IOobject& io = *objects[name];
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io.writeOpt() = IOobject::AUTO_WRITE;
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// Load field
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fields.set(i, new GeoField(io, mesh));
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}
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}
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}
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// Debugging: compare two fields.
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void compareFields
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(
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const scalar tolDim,
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const volVectorField& a,
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const volVectorField& b
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)
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{
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forAll(a, cellI)
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{
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if (mag(b[cellI] - a[cellI]) > tolDim)
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{
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FatalErrorIn
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(
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"compareFields"
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"(const scalar, const volVectorField&, const volVectorField&)"
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) << "Did not map volVectorField correctly:" << nl
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<< "cell:" << cellI
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<< " transfer b:" << b[cellI]
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<< " real cc:" << a[cellI]
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<< abort(FatalError);
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}
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}
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forAll(a.boundaryField(), patchI)
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{
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// We have real mesh cellcentre and
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// mapped original cell centre.
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const fvPatchVectorField& aBoundary =
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a.boundaryField()[patchI];
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const fvPatchVectorField& bBoundary =
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b.boundaryField()[patchI];
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if (!bBoundary.coupled())
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{
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forAll(aBoundary, i)
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{
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if (mag(aBoundary[i] - bBoundary[i]) > tolDim)
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{
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FatalErrorIn
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(
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"compareFields"
|
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"(const scalar, const volVectorField&"
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", const volVectorField&)"
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) << "Did not map volVectorField correctly:"
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<< endl
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<< "patch:" << patchI << " patchFace:" << i
|
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<< " cc:" << endl
|
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<< " real :" << aBoundary[i] << endl
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<< " mapped :" << bBoundary[i] << endl
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<< abort(FatalError);
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}
|
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}
|
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}
|
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}
|
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}
|
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|
|
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// Main program:
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|
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int main(int argc, char *argv[])
|
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{
|
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# include "addRegionOption.H"
|
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argList::validOptions.insert("mergeTol", "relative merge distance");
|
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|
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// Create argList. This will check for non-existing processor dirs.
|
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# include "setRootCase.H"
|
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|
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//- Not useful anymore. See above.
|
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//// Create processor directory if non-existing
|
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//if (!Pstream::master() && !isDir(args.path()))
|
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//{
|
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// Pout<< "Creating case directory " << args.path() << endl;
|
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// mkDir(args.path());
|
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//}
|
|
|
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# include "createTime.H"
|
|
|
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word regionName = polyMesh::defaultRegion;
|
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fileName meshSubDir;
|
|
|
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if (args.optionReadIfPresent("region", regionName))
|
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{
|
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meshSubDir = regionName/polyMesh::meshSubDir;
|
|
}
|
|
else
|
|
{
|
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meshSubDir = polyMesh::meshSubDir;
|
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}
|
|
Info<< "Using mesh subdirectory " << meshSubDir << nl << endl;
|
|
|
|
|
|
// Get time instance directory. Since not all processors have meshes
|
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// just use the master one everywhere.
|
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|
|
fileName masterInstDir;
|
|
if (Pstream::master())
|
|
{
|
|
masterInstDir = runTime.findInstance(meshSubDir, "points");
|
|
}
|
|
Pstream::scatter(masterInstDir);
|
|
|
|
// Check who has a mesh
|
|
const fileName meshPath = runTime.path()/masterInstDir/meshSubDir;
|
|
|
|
Info<< "Found points in " << meshPath << nl << endl;
|
|
|
|
|
|
boolList haveMesh(Pstream::nProcs(), false);
|
|
haveMesh[Pstream::myProcNo()] = isDir(meshPath);
|
|
Pstream::gatherList(haveMesh);
|
|
Pstream::scatterList(haveMesh);
|
|
Info<< "Per processor mesh availability : " << haveMesh << endl;
|
|
const bool allHaveMesh = (findIndex(haveMesh, false) == -1);
|
|
|
|
// Create mesh
|
|
autoPtr<fvMesh> meshPtr = createMesh
|
|
(
|
|
runTime,
|
|
regionName,
|
|
masterInstDir,
|
|
haveMesh[Pstream::myProcNo()]
|
|
);
|
|
fvMesh& mesh = meshPtr();
|
|
|
|
Pout<< "Read mesh:" << endl;
|
|
printMeshData(Pout, mesh);
|
|
Pout<< endl;
|
|
|
|
IOdictionary decompositionDict
|
|
(
|
|
IOobject
|
|
(
|
|
"decomposeParDict",
|
|
runTime.system(),
|
|
mesh,
|
|
IOobject::MUST_READ,
|
|
IOobject::NO_WRITE
|
|
)
|
|
);
|
|
|
|
labelList finalDecomp;
|
|
|
|
// Create decompositionMethod and new decomposition
|
|
{
|
|
autoPtr<decompositionMethod> decomposer
|
|
(
|
|
decompositionMethod::New
|
|
(
|
|
decompositionDict,
|
|
mesh
|
|
)
|
|
);
|
|
|
|
if (!decomposer().parallelAware())
|
|
{
|
|
WarningIn(args.executable())
|
|
<< "You have selected decomposition method "
|
|
<< decomposer().typeName
|
|
<< " which does" << endl
|
|
<< "not synchronise the decomposition across"
|
|
<< " processor patches." << endl
|
|
<< " You might want to select a decomposition method which"
|
|
<< " is aware of this. Continuing."
|
|
<< endl;
|
|
}
|
|
|
|
finalDecomp = decomposer().decompose(mesh.cellCentres());
|
|
}
|
|
|
|
// Dump decomposition to volScalarField
|
|
writeDecomposition("decomposition", mesh, finalDecomp);
|
|
|
|
|
|
// Create 0 sized mesh to do all the generation of zero sized
|
|
// fields on processors that have zero sized meshes. Note that this is
|
|
// only nessecary on master but since polyMesh construction with
|
|
// Pstream::parRun does parallel comms we have to do it on all
|
|
// processors
|
|
autoPtr<fvMeshSubset> subsetterPtr;
|
|
|
|
if (!allHaveMesh)
|
|
{
|
|
// Find last non-processor patch.
|
|
const polyBoundaryMesh& patches = mesh.boundaryMesh();
|
|
|
|
label nonProcI = -1;
|
|
|
|
forAll(patches, patchI)
|
|
{
|
|
if (isA<processorPolyPatch>(patches[patchI]))
|
|
{
|
|
break;
|
|
}
|
|
nonProcI++;
|
|
}
|
|
|
|
if (nonProcI == -1)
|
|
{
|
|
FatalErrorIn(args.executable())
|
|
<< "Cannot find non-processor patch on processor "
|
|
<< Pstream::myProcNo() << endl
|
|
<< " Current patches:" << patches.names() << abort(FatalError);
|
|
}
|
|
|
|
// Subset 0 cells, no parallel comms. This is used to create zero-sized
|
|
// fields.
|
|
subsetterPtr.reset
|
|
(
|
|
new fvMeshSubset
|
|
(
|
|
IOobject
|
|
(
|
|
"set",
|
|
runTime.timeName(),
|
|
mesh,
|
|
IOobject::NO_READ,
|
|
IOobject::NO_WRITE
|
|
),
|
|
mesh
|
|
)
|
|
);
|
|
subsetterPtr().setLargeCellSubset(labelHashSet(0), nonProcI, false);
|
|
}
|
|
|
|
|
|
// Get original objects (before incrementing time!)
|
|
IOobjectList objects(mesh, runTime.timeName());
|
|
// We don't want to map the decomposition (mapping already tested when
|
|
// mapping the cell centre field)
|
|
IOobjectList::iterator iter = objects.find("decomposition");
|
|
if (iter != objects.end())
|
|
{
|
|
objects.erase(iter);
|
|
}
|
|
|
|
PtrList<volScalarField> volScalarFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
volScalarFields
|
|
);
|
|
|
|
PtrList<volVectorField> volVectorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
volVectorFields
|
|
);
|
|
|
|
PtrList<volSphericalTensorField> volSphereTensorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
volSphereTensorFields
|
|
);
|
|
|
|
PtrList<volSymmTensorField> volSymmTensorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
volSymmTensorFields
|
|
);
|
|
|
|
PtrList<volTensorField> volTensorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
volTensorFields
|
|
);
|
|
|
|
PtrList<surfaceScalarField> surfScalarFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
surfScalarFields
|
|
);
|
|
|
|
PtrList<surfaceVectorField> surfVectorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
surfVectorFields
|
|
);
|
|
|
|
PtrList<surfaceSphericalTensorField> surfSphereTensorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
surfSphereTensorFields
|
|
);
|
|
|
|
PtrList<surfaceSymmTensorField> surfSymmTensorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
surfSymmTensorFields
|
|
);
|
|
|
|
PtrList<surfaceTensorField> surfTensorFields;
|
|
readFields
|
|
(
|
|
haveMesh,
|
|
mesh,
|
|
subsetterPtr,
|
|
objects,
|
|
surfTensorFields
|
|
);
|
|
|
|
|
|
// Debugging: Create additional volField that will be mapped.
|
|
// Used to test correctness of mapping
|
|
volVectorField mapCc("mapCc", 1*mesh.C());
|
|
|
|
// Global matching tolerance
|
|
const scalar tolDim = getMergeDistance
|
|
(
|
|
args,
|
|
runTime,
|
|
mesh.globalData().bb()
|
|
);
|
|
|
|
// Mesh distribution engine
|
|
fvMeshDistribute distributor(mesh, tolDim);
|
|
|
|
Pout<< "Wanted distribution:"
|
|
<< distributor.countCells(finalDecomp) << nl << endl;
|
|
|
|
// Do actual sending/receiving of mesh
|
|
autoPtr<mapDistributePolyMesh> map = distributor.distribute(finalDecomp);
|
|
|
|
//// Distribute any non-registered data accordingly
|
|
//map().distributeFaceData(faceCc);
|
|
|
|
|
|
// Print a bit
|
|
Pout<< "After distribution mesh:" << endl;
|
|
printMeshData(Pout, mesh);
|
|
Pout<< endl;
|
|
|
|
runTime++;
|
|
Pout<< "Writing redistributed mesh to " << runTime.timeName()
|
|
<< nl << endl;
|
|
mesh.write();
|
|
|
|
|
|
// Debugging: test mapped cellcentre field.
|
|
compareFields(tolDim, mesh.C(), mapCc);
|
|
|
|
// Print nice message
|
|
// ~~~~~~~~~~~~~~~~~~
|
|
|
|
// Determine which processors remain so we can print nice final message.
|
|
labelList nFaces(Pstream::nProcs());
|
|
nFaces[Pstream::myProcNo()] = mesh.nFaces();
|
|
Pstream::gatherList(nFaces);
|
|
Pstream::scatterList(nFaces);
|
|
|
|
Info<< nl
|
|
<< "You can pick up the redecomposed mesh from the polyMesh directory"
|
|
<< " in " << runTime.timeName() << "." << nl
|
|
<< "If you redecomposed the mesh to less processors you can delete"
|
|
<< nl
|
|
<< "the processor directories with 0 sized meshes in them." << nl
|
|
<< "Below is a sample set of commands to do this."
|
|
<< " Take care when issuing these" << nl
|
|
<< "commands." << nl << endl;
|
|
|
|
forAll(nFaces, procI)
|
|
{
|
|
fileName procDir = "processor" + name(procI);
|
|
|
|
if (nFaces[procI] == 0)
|
|
{
|
|
Info<< " rm -r " << procDir.c_str() << nl;
|
|
}
|
|
else
|
|
{
|
|
fileName timeDir = procDir/runTime.timeName()/meshSubDir;
|
|
fileName constDir = procDir/runTime.constant()/meshSubDir;
|
|
|
|
Info<< " rm -r " << constDir.c_str() << nl
|
|
<< " mv " << timeDir.c_str()
|
|
<< ' ' << constDir.c_str() << nl;
|
|
}
|
|
}
|
|
Info<< endl;
|
|
|
|
|
|
Pout<< "End\n" << endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|