Work in progress regarding parallel bugfix in donorBasedLayeredOverlapFringe
This commit is contained in:
Vuko Vukcevic
parent
af26bfb81c
commit
390f535542
1 changed files with 89 additions and 52 deletions
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@ -204,10 +204,16 @@ void Foam::donorBasedLayeredOverlapFringe::calcAddressing() const
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labelHashSet allAcceptors(0.02*mesh.nCells());
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labelHashSet allFringeHoles(0.02*mesh.nCells());
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// Communicate state across processors
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reduce(allFringesReady, andOp<bool>());
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if (allFringesReady)
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{
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Info<< "All dependent fringes are ready. Starting donor based layered"
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<< " overlap assembly..." << endl;
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if (debug)
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{
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Info<< "All dependent fringes are ready."
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<< " Starting donor based layered overlap assembly..." << endl;
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}
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// Loop through connected regions
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forAll (connectedRegionIDs_, crI)
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@ -223,73 +229,104 @@ void Foam::donorBasedLayeredOverlapFringe::calcAddressing() const
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const donorAcceptorList& crDonorAcceptorPairs =
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fringe.finalDonorAcceptors();
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// Need to gather/scatter the donor-acceptor pairs across all
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// processors because these pairs only represent acceptors found on
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// my processor. It would be possible to optimize this a bit using
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// the mapDistribute tool, but I don't think it will represent a big
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// overhead, especially since it's done once.
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List<donorAcceptorList> allDonorAcceptorPairs(Pstream::nProcs());
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// Fill in my part and communicate
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allDonorAcceptorPairs[Pstream::myProcNo()] = crDonorAcceptorPairs;
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Pstream::gatherList(allDonorAcceptorPairs);
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Pstream::scatterList(allDonorAcceptorPairs);
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// Count approximate number of acceptors to guess the size for the
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// hash set containing donors
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label nAllAcceptors = 0;
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forAll (allDonorAcceptorPairs, procI)
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{
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nAllAcceptors += allDonorAcceptorPairs[procI].size();
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}
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// Hash set containing donors
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labelHashSet donors(6*crDonorAcceptorPairs.size());
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labelHashSet donors(6*nAllAcceptors);
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// Initialize centre of the donors of this connected region in order
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// to search in a given direction
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vector centrePoint(vector::zero);
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// Loop through all donor/acceptors
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forAll (crDonorAcceptorPairs, daI)
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// Loop through all processors
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forAll (allDonorAcceptorPairs, procI)
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{
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// Get this donor/acceptor pair
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const donorAcceptor& daPair = crDonorAcceptorPairs[daI];
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// Get all donor/acceptor pairs found on this processor
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const donorAcceptorList& procDonorAcceptorPairs =
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allDonorAcceptorPairs[procI];
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// Check whether all donors have been found
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if (!daPair.donorFound())
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// Loop through all donor/acceptors
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forAll (procDonorAcceptorPairs, daI)
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{
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FatalErrorIn
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(
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"donorBasedLayeredOverlapFringe::"
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"updateIteration(donorAcceptorList&) const"
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) << "Donor not found for donor/acceptor pair " << daI
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<< nl
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<< "Donor/acceptor data: " << daPair
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<< nl
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<< "In connected region: " << allRegions[regionID].name()
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<< abort(FatalError);
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}
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// Get this donor/acceptor pair
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const donorAcceptor& daPair = procDonorAcceptorPairs[daI];
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// Mark donors on my processor from this connected region. Note
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// that the check has been made in constructor to make sure that
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// this region is the only donor region for the connected region
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if (daPair.donorProcNo() == Pstream::myProcNo())
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{
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// Get donor index
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const label& dI = daPair.donorCell();
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// Insert donor into the hash set
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if (donors.insert(dI))
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// Check whether all donors have been found
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if (!daPair.donorFound())
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{
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// Donor has been inserted (not previously found in the
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// hash set), add donor point to centre point (the
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// centre point will be calculated later on as
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// arithmetic mean)
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centrePoint += daPair.donorPoint();
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FatalErrorIn
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(
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"donorBasedLayeredOverlapFringe::"
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"updateIteration(donorAcceptorList&) const"
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) << "Donor not found for donor/acceptor pair " << daI
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<< nl
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<< "Donor/acceptor data: " << daPair
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<< nl
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<< "In connected region: "
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<< allRegions[regionID].name()
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<< abort(FatalError);
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}
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// Loop through extended donor cells
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const donorAcceptor::DynamicLabelList& extDonors =
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daPair.extendedDonorCells();
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const donorAcceptor::DynamicPointList& extDonorPoints =
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daPair.extendedDonorPoints();
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forAll (extDonors, i)
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// Mark donors on my processor from this connected region.
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// Note that the check has been made in constructor to make
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// sure that this region is the only donor region for the
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// connected region
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if (daPair.donorProcNo() == Pstream::myProcNo())
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{
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// Get donor index
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const label& edI = extDonors[i];
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const label& dI = daPair.donorCell();
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// Inser extended donor into the hash set
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if (donors.insert(edI))
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// Insert donor into the hash set
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if (donors.insert(dI))
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{
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// Donor has been inserted (not previously found in
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// the hash set), add extended donor point as well
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centrePoint += extDonorPoints[i];
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// the hash set), add donor point to centre point
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// (the centre point will be calculated later on as
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// arithmetic mean)
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centrePoint += daPair.donorPoint();
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}
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} // End for all extended donors
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} // End if this donor is on my processor
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} // End for all (master) donor cells
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// Loop through extended donor cells
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const donorAcceptor::DynamicLabelList& extDonors =
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daPair.extendedDonorCells();
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const donorAcceptor::DynamicPointList& extDonorPoints =
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daPair.extendedDonorPoints();
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forAll (extDonors, i)
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{
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// Get donor index
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const label& edI = extDonors[i];
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// Inser extended donor into the hash set
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if (donors.insert(edI))
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{
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// Donor has been inserted (not previously found
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// in the hash set), add extended donor point as
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// well
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centrePoint += extDonorPoints[i];
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}
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} // End for all extended donors
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} // End if this donor is on my processor
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} // End for all (master) donor cells
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} // End for all processors
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// Use the centre point as specified by the user if it was specified
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// (if the regionCentrePoints_ list is not empty). This avoids
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