diff options
Initialize at openlb-1-3
Diffstat (limited to 'src/communication/loadBalancer.hh')
-rw-r--r-- | src/communication/loadBalancer.hh | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/communication/loadBalancer.hh b/src/communication/loadBalancer.hh new file mode 100644 index 0000000..62b7e06 --- /dev/null +++ b/src/communication/loadBalancer.hh @@ -0,0 +1,167 @@ +/* This file is part of the OpenLB library + * + * Copyright (C) 2007, 2014 Mathias Krause, Peter Weisbrod + * E-mail contact: info@openlb.net + * The most recent release of OpenLB can be downloaded at + * <http://www.openlb.net/> + * + * This program 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 2 + * of the License, or (at your option) any later version. + * + * This program 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 this program; if not, write to the Free + * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. +*/ + + +#ifndef LOAD_BALANCER_HH +#define LOAD_BALANCER_HH + +#include "communication/loadBalancer.h" + +namespace olb { + + +template<typename T> +LoadBalancer<T>::LoadBalancer(int size) : _size(size) +{} + +template<typename T> +LoadBalancer<T>::LoadBalancer(int size, std::map<int,int>& loc, std::vector<int>& glob, std::map<int,int>& rank) + : _size(size), _loc(loc), _glob(glob), _rank(rank) +{} + +template<typename T> +LoadBalancer<T>::~LoadBalancer() +{} + +template<typename T> +void LoadBalancer<T>::swap(LoadBalancer<T>& loadBalancer) +{ + std::swap(_size, loadBalancer._size); + _loc.swap(loadBalancer._loc); + _glob.swap(loadBalancer._glob); + _rank.swap(loadBalancer._rank); +} + +template<typename T> +bool LoadBalancer<T>::isLocal(const int& glob) +{ + return rank(glob) == singleton::mpi().getRank(); +} + +template<typename T> +int LoadBalancer<T>::loc(const int& glob) +{ + return _loc[glob]; +} + +template<typename T> +int LoadBalancer<T>::loc(int glob) const +{ + std::map<int,int>::const_iterator iter = _loc.find(glob); + return iter->second; +} + +template<typename T> +int LoadBalancer<T>::glob(int loc) const +{ + return _glob[loc]; +} + +template<typename T> +int LoadBalancer<T>::rank(const int& glob) +{ + return _rank[glob]; +} + +template<typename T> +int LoadBalancer<T>::rank(int glob) const +{ + std::map<int,int>::const_iterator iter = _rank.find(glob); + return iter->second; +} + +template<typename T> +int LoadBalancer<T>::size() const +{ + return _size; +} + +template<typename T> +bool LoadBalancer<T>::operator==(const LoadBalancer<T>& rhs) const +{ + return _size == rhs._size && + _loc == rhs._loc && + _glob == rhs._glob && + _rank == rhs._rank; +} + + +template<typename T> +size_t LoadBalancer<T>::getNblock() const +{ + return 4 // _size, plus vector length of _loc, _glob and _rank + + _loc.size() + + _rank.size() + + _glob.size(); +} + + +template<typename T> +size_t LoadBalancer<T>::getSerializableSize() const +{ + return sizeof(int) // _size + + 3 * sizeof(size_t) // vector length of _loc, _glob and _rank + + _loc.size() * sizeof(std::pair<int, int>) + + _rank.size() * sizeof(std::pair<int, int>) + + _glob.size() * sizeof(int); +} + + +template<typename T> +bool* LoadBalancer<T>::getBlock(std::size_t iBlock, std::size_t& sizeBlock, bool loadingMode) +{ + std::size_t currentBlock = 0; + size_t sizeBufferIndex = 0; + bool* dataPtr = nullptr; + + this->registerVar<int> (iBlock, sizeBlock, currentBlock, dataPtr, _size); + this->registerMap<int, int> (iBlock, sizeBlock, currentBlock, sizeBufferIndex, dataPtr, _loc, loadingMode); + this->registerStdVectorOfVars<int>(iBlock, sizeBlock, currentBlock, sizeBufferIndex, dataPtr, _glob, loadingMode); + this->registerMap<int, int> (iBlock, sizeBlock, currentBlock, sizeBufferIndex, dataPtr, _rank, loadingMode); + + return dataPtr; +} + + +template<typename T> +void LoadBalancer<T>::print(bool multiOutput) const +{ + OstreamManager clout(std::cout,"LoadBalancer"); + clout.setMultiOutput(multiOutput); + for (unsigned i = 0; i < this->_glob.size(); i++) { + clout << "glob[" << i << "]=" << this->_glob[i] << std::endl; + } + for (auto it = this->_loc.cbegin(); it != this->_loc.cend(); + it++) { + clout << "loc[" << (*it).first << "]=" << (*it).second << std::endl; + } + for (auto it = this->_rank.cbegin(); it != this->_rank.cend(); + it++) { + clout << "rank[" << (*it).first << "]=" << (*it).second << std::endl; + } + clout.setMultiOutput(false); +} + + +} // namespace olb +#endif |