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https://gitlab.kitware.com/vtk/vtk-m
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Merge topic 'getActiveParticles_performance'
c109d3dde kick the dashboards. 9acb482a2 init maxnumsteps ba3571f74 More efficient GetActiveParticles() 064501214 Merge branch 'master' of https://gitlab.kitware.com/vtk/vtk-m ff4cc5e00 Merge branch 'master' of https://gitlab.kitware.com/vtk/vtk-m 51435f227 Merge branch 'master' of https://gitlab.kitware.com/vtk/vtk-m Acked-by: Kitware Robot <kwrobot@kitware.com> Acked-by: Kenneth Moreland <morelandkd@ornl.gov> Merge-request: !3091
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commit
56588b6244
@ -40,11 +40,11 @@ public:
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{
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}
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void Execute(vtkm::Id numSteps,
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void Execute(vtkm::Id maxNumSteps,
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vtkm::FloatDefault stepSize,
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const vtkm::cont::ArrayHandle<ParticleType>& seeds)
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{
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this->SetNumberOfSteps(numSteps);
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this->SetMaxNumberOfSteps(maxNumSteps);
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this->SetStepSize(stepSize);
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this->SetSeeds(seeds);
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this->Go();
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@ -65,7 +65,7 @@ public:
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}
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void SetStepSize(vtkm::FloatDefault stepSize) { this->StepSize = stepSize; }
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void SetNumberOfSteps(vtkm::Id numSteps) { this->NumberOfSteps = numSteps; }
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void SetMaxNumberOfSteps(vtkm::Id numSteps) { this->MaxNumberOfSteps = numSteps; }
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void SetSeeds(const vtkm::cont::ArrayHandle<ParticleType>& seeds)
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{
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this->ClearParticles();
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@ -100,8 +100,7 @@ public:
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vtkm::filter::flow::internal::ParticleMessenger<ParticleType> messenger(
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this->Comm, this->UseAsynchronousCommunication, this->BoundsMap, 1, 128);
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vtkm::Id nLocal = static_cast<vtkm::Id>(this->Active.size() + this->Inactive.size());
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this->ComputeTotalNumParticles(nLocal);
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this->ComputeTotalNumParticles();
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while (this->TotalNumTerminatedParticles < this->TotalNumParticles)
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{
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@ -113,7 +112,7 @@ public:
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auto& block = this->GetDataSet(blockId);
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DSIHelperInfoType bb =
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DSIHelperInfo<ParticleType>(v, this->BoundsMap, this->ParticleBlockIDsMap);
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block.Advect(bb, this->StepSize, this->NumberOfSteps);
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block.Advect(bb, this->StepSize, this->MaxNumberOfSteps);
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numTerm = this->UpdateResult(bb.Get<DSIHelperInfo<ParticleType>>());
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}
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@ -133,14 +132,17 @@ public:
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this->ParticleBlockIDsMap.clear();
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}
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void ComputeTotalNumParticles(const vtkm::Id& numLocal)
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void ComputeTotalNumParticles()
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{
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long long total = static_cast<long long>(numLocal);
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vtkm::Id numLocal = static_cast<vtkm::Id>(this->Inactive.size());
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for (const auto& it : this->Active)
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numLocal += it.second.size();
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#ifdef VTKM_ENABLE_MPI
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MPI_Comm mpiComm = vtkmdiy::mpi::mpi_cast(this->Comm.handle());
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MPI_Allreduce(MPI_IN_PLACE, &total, 1, MPI_LONG_LONG, MPI_SUM, mpiComm);
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vtkmdiy::mpi::all_reduce(this->Comm, numLocal, this->TotalNumParticles, std::plus<vtkm::Id>{});
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#else
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this->TotalNumParticles = numLocal;
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#endif
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this->TotalNumParticles = static_cast<vtkm::Id>(total);
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}
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DataSetIntegrator<DSIType>& GetDataSet(vtkm::Id id)
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@ -161,35 +163,55 @@ public:
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auto bit = blockIds.begin();
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while (pit != particles.end() && bit != blockIds.end())
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{
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vtkm::Id blockId0 = (*bit)[0];
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this->ParticleBlockIDsMap[pit->GetID()] = *bit;
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if (this->Active.find(blockId0) == this->Active.end())
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this->Active[blockId0] = { *pit };
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else
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this->Active[blockId0].emplace_back(*pit);
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pit++;
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bit++;
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}
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//Update Active
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this->Active.insert(this->Active.end(), particles.begin(), particles.end());
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}
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virtual bool GetActiveParticles(std::vector<ParticleType>& particles, vtkm::Id& blockId)
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{
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//DRP: particles = std::move(this->Active2[blockId]);
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particles.clear();
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blockId = -1;
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if (this->Active.empty())
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return false;
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blockId = this->ParticleBlockIDsMap[this->Active.front().GetID()][0];
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auto it = this->Active.begin();
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while (it != this->Active.end())
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//If only one, return it.
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if (this->Active.size() == 1)
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{
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auto p = *it;
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if (blockId == this->ParticleBlockIDsMap[p.GetID()][0])
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blockId = this->Active.begin()->first;
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particles = std::move(this->Active.begin()->second);
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this->Active.clear();
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}
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else
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{
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//Find the blockId with the most particles.
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std::size_t maxNum = 0;
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auto maxIt = this->Active.end();
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for (auto it = this->Active.begin(); it != this->Active.end(); it++)
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{
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particles.emplace_back(p);
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it = this->Active.erase(it);
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auto sz = it->second.size();
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if (sz > maxNum)
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{
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maxNum = sz;
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maxIt = it;
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}
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}
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else
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it++;
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if (maxNum == 0)
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{
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this->Active.clear();
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return false;
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}
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blockId = maxIt->first;
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particles = std::move(maxIt->second);
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this->Active.erase(maxIt);
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}
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return !particles.empty();
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@ -291,22 +313,27 @@ public:
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virtual void UpdateActive(const std::vector<ParticleType>& particles,
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const std::unordered_map<vtkm::Id, std::vector<vtkm::Id>>& idsMap)
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{
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this->Update(this->Active, particles, idsMap);
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VTKM_ASSERT(particles.size() == idsMap.size());
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for (auto pit = particles.begin(); pit != particles.end(); pit++)
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{
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vtkm::Id particleID = pit->GetID();
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const auto& it = idsMap.find(particleID);
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VTKM_ASSERT(it != idsMap.end() && !it->second.empty());
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vtkm::Id blockId = it->second[0];
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this->Active[blockId].emplace_back(*pit);
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}
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for (const auto& it : idsMap)
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this->ParticleBlockIDsMap[it.first] = it.second;
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}
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virtual void UpdateInactive(const std::vector<ParticleType>& particles,
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const std::unordered_map<vtkm::Id, std::vector<vtkm::Id>>& idsMap)
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{
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this->Update(this->Inactive, particles, idsMap);
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}
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void Update(std::vector<ParticleType>& arr,
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const std::vector<ParticleType>& particles,
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const std::unordered_map<vtkm::Id, std::vector<vtkm::Id>>& idsMap)
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{
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VTKM_ASSERT(particles.size() == idsMap.size());
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arr.insert(arr.end(), particles.begin(), particles.end());
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this->Inactive.insert(this->Inactive.end(), particles.begin(), particles.end());
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for (const auto& it : idsMap)
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this->ParticleBlockIDsMap[it.first] = it.second;
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}
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@ -353,12 +380,13 @@ public:
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}
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//Member data
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std::vector<ParticleType> Active;
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// {blockId, std::vector of particles}
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std::unordered_map<vtkm::Id, std::vector<ParticleType>> Active;
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std::vector<DSIType> Blocks;
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vtkm::filter::flow::internal::BoundsMap BoundsMap;
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vtkmdiy::mpi::communicator Comm = vtkm::cont::EnvironmentTracker::GetCommunicator();
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std::vector<ParticleType> Inactive;
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vtkm::Id NumberOfSteps;
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vtkm::Id MaxNumberOfSteps = 0;
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vtkm::Id NumRanks;
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//{particleId : {block IDs}}
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std::unordered_map<vtkm::Id, std::vector<vtkm::Id>> ParticleBlockIDsMap;
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@ -48,8 +48,7 @@ public:
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void Go() override
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{
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vtkm::Id nLocal = static_cast<vtkm::Id>(this->Active.size() + this->Inactive.size());
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this->ComputeTotalNumParticles(nLocal);
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this->ComputeTotalNumParticles();
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std::vector<std::thread> workerThreads;
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workerThreads.emplace_back(std::thread(AdvectAlgorithmThreaded::Worker, this));
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@ -124,7 +123,7 @@ protected:
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auto& block = this->GetDataSet(blockId);
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DSIHelperInfoType bb =
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DSIHelperInfo<ParticleType>(v, this->BoundsMap, this->ParticleBlockIDsMap);
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block.Advect(bb, this->StepSize, this->NumberOfSteps);
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block.Advect(bb, this->StepSize, this->MaxNumberOfSteps);
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this->UpdateWorkerResult(blockId, bb);
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}
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else
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