[553] | 1 | /*! |
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| 2 | \file distribution_server.cpp |
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| 3 | \author Ha NGUYEN |
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| 4 | \since 13 Jan 2015 |
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| 5 | \date 04 Feb 2015 |
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| 6 | |
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| 7 | \brief Index distribution on server side. |
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| 8 | */ |
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[551] | 9 | #include "distribution_server.hpp" |
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[668] | 10 | #include "utils.hpp" |
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[551] | 11 | |
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| 12 | namespace xios { |
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[553] | 13 | |
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[653] | 14 | CDistributionServer::CDistributionServer(int rank, int dims, const CArray<size_t,1>& globalIndex) |
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[552] | 15 | : CDistribution(rank, dims, globalIndex), nGlobal_(), nZoomSize_(), nZoomBegin_() |
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[551] | 16 | { |
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| 17 | } |
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| 18 | |
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[552] | 19 | CDistributionServer::CDistributionServer(int rank, const std::vector<int>& nZoomBegin, |
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| 20 | const std::vector<int>& nZoomSize, const std::vector<int>& nGlobal) |
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| 21 | : CDistribution(rank, nGlobal.size()), nGlobal_(nGlobal), nZoomSize_(nZoomSize), nZoomBegin_(nZoomBegin) |
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[551] | 22 | { |
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| 23 | createGlobalIndex(); |
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| 24 | } |
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| 25 | |
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[567] | 26 | CDistributionServer::CDistributionServer(int rank, const std::vector<int>& nZoomBegin, |
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| 27 | const std::vector<int>& nZoomSize, |
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| 28 | const std::vector<int>& nZoomBeginGlobal, |
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| 29 | const std::vector<int>& nGlobal) |
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| 30 | : CDistribution(rank, nGlobal.size()), nGlobal_(nGlobal), nZoomBeginGlobal_(nZoomBeginGlobal), |
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| 31 | nZoomSize_(nZoomSize), nZoomBegin_(nZoomBegin) |
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| 32 | { |
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| 33 | createGlobalIndex(); |
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| 34 | } |
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| 35 | |
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[551] | 36 | CDistributionServer::~CDistributionServer() |
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| 37 | { |
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| 38 | } |
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| 39 | |
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[552] | 40 | /*! |
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| 41 | Create global index on server side |
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| 42 | Like the similar function on client side, this function serves on creating global index |
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| 43 | for data written by the server. The global index is used to calculating local index of data |
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| 44 | written on each server |
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| 45 | */ |
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| 46 | void CDistributionServer::createGlobalIndex() |
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[551] | 47 | { |
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[552] | 48 | size_t idx = 0, ssize = 1; |
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| 49 | for (int i = 0; i < nZoomSize_.size(); ++i) ssize *= nZoomSize_[i]; |
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| 50 | |
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[653] | 51 | this->globalIndex_.resize(ssize); |
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[552] | 52 | std::vector<int> idxLoop(this->getDims(),0); |
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| 53 | std::vector<int> currentIndex(this->getDims()); |
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| 54 | int innerLoopSize = nZoomSize_[0]; |
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| 55 | |
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| 56 | while (idx<ssize) |
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[551] | 57 | { |
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[552] | 58 | for (int i = 0; i < this->dims_-1; ++i) |
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| 59 | { |
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| 60 | if (idxLoop[i] == nZoomSize_[i]) |
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| 61 | { |
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| 62 | idxLoop[i] = 0; |
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| 63 | ++idxLoop[i+1]; |
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| 64 | } |
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| 65 | } |
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| 66 | |
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| 67 | for (int i = 1; i < this->dims_; ++i) currentIndex[i] = idxLoop[i] + nZoomBegin_[i]; |
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| 68 | |
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| 69 | size_t mulDim, globalIndex; |
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| 70 | for (int i = 0; i < innerLoopSize; ++i) |
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| 71 | { |
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| 72 | mulDim = 1; |
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| 73 | globalIndex = i + nZoomBegin_[0]; |
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| 74 | |
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| 75 | for (int k = 1; k < this->dims_; ++k) |
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| 76 | { |
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| 77 | mulDim *= nGlobal_[k-1]; |
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| 78 | globalIndex += (currentIndex[k])*mulDim; |
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| 79 | } |
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[653] | 80 | this->globalIndex_(idx) = globalIndex; |
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[552] | 81 | ++idx; |
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| 82 | } |
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| 83 | idxLoop[0] += innerLoopSize; |
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[551] | 84 | } |
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| 85 | } |
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| 86 | |
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[552] | 87 | /*! |
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| 88 | Compute local index for writing data on server |
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| 89 | \param [in] globalIndex global index received from client |
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| 90 | \return local index of written data |
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| 91 | */ |
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| 92 | CArray<size_t,1> CDistributionServer::computeLocalIndex(const CArray<size_t,1>& globalIndex) |
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[551] | 93 | { |
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[668] | 94 | int ssize = globalIndex.numElements(); |
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| 95 | int nbGlobalIndex = this->globalIndex_.numElements(); |
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[551] | 96 | |
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[668] | 97 | std::vector<int>::iterator it; |
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| 98 | std::vector<int> permutIndex(nbGlobalIndex); |
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| 99 | XIOSAlgorithms::fillInIndex(nbGlobalIndex, permutIndex); |
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| 100 | XIOSAlgorithms::sortWithIndex<size_t, CArrayStorage>(this->globalIndex_, permutIndex); |
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| 101 | typedef XIOSBinarySearchWithIndex<size_t, CArrayStorage> BinarySearch; |
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| 102 | BinarySearch binarySearch(this->globalIndex_); |
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| 103 | |
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[552] | 104 | CArray<size_t,1> localIndex(ssize); |
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[668] | 105 | int idx = 0; |
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[552] | 106 | for (int i = 0; i < ssize; ++i) |
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[551] | 107 | { |
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[668] | 108 | if (binarySearch.search(permutIndex.begin(), permutIndex.end(), globalIndex(i), it)) |
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[552] | 109 | { |
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[668] | 110 | localIndex(idx) = *it; |
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[552] | 111 | ++idx; |
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| 112 | } |
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[551] | 113 | } |
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[552] | 114 | |
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| 115 | return localIndex; |
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| 116 | } |
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| 117 | |
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| 118 | /*! |
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| 119 | Compute local index for writing data on server |
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| 120 | \param [in] globalIndex Global index received from client |
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| 121 | */ |
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| 122 | void CDistributionServer::computeLocalIndex(CArray<size_t,1>& globalIndex) |
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| 123 | { |
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[668] | 124 | int ssize = globalIndex.numElements(); |
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| 125 | int nbGlobalIndex = this->globalIndex_.numElements(); |
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[552] | 126 | |
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[668] | 127 | std::vector<int>::iterator it; |
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| 128 | std::vector<int> permutIndex(nbGlobalIndex); |
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| 129 | XIOSAlgorithms::fillInIndex(nbGlobalIndex, permutIndex); |
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| 130 | XIOSAlgorithms::sortWithIndex<size_t, CArrayStorage>(this->globalIndex_, permutIndex); |
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| 131 | typedef XIOSBinarySearchWithIndex<size_t, CArrayStorage> BinarySearch; |
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| 132 | BinarySearch binarySearch(this->globalIndex_); |
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| 133 | |
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[552] | 134 | CArray<size_t,1> localIndex(ssize); |
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[668] | 135 | int idx = 0; |
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[552] | 136 | for (int i = 0; i < ssize; ++i) |
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[551] | 137 | { |
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[668] | 138 | if (binarySearch.search(permutIndex.begin(), permutIndex.end(), globalIndex(i), it)) |
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[552] | 139 | { |
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[668] | 140 | localIndex(idx) = *it; |
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[552] | 141 | ++idx; |
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| 142 | } |
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[551] | 143 | } |
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| 144 | |
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[552] | 145 | globalIndex = localIndex; |
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[551] | 146 | } |
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| 147 | |
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[676] | 148 | /*! |
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| 149 | Transforms local indexes owned by the server into global indexes |
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| 150 | \param [in/out] indexes on input, local indexes of the server, |
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| 151 | on output, the corresponding global indexes |
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| 152 | */ |
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| 153 | void CDistributionServer::computeGlobalIndex(CArray<int,1>& indexes) const |
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| 154 | { |
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| 155 | for (int i = 0; i < indexes.numElements(); ++i) |
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| 156 | { |
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| 157 | indexes(i) = globalIndex_(indexes(i)); |
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| 158 | } |
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| 159 | } |
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[567] | 160 | |
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[676] | 161 | |
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| 162 | const std::vector<int>& CDistributionServer::getZoomBeginGlobal() const |
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[567] | 163 | { |
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| 164 | return nZoomBeginGlobal_; |
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| 165 | } |
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| 166 | |
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[676] | 167 | const std::vector<int>& CDistributionServer::getZoomBeginServer() const |
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[567] | 168 | { |
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| 169 | return nZoomBegin_; |
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| 170 | } |
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| 171 | |
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[676] | 172 | const std::vector<int>& CDistributionServer::getZoomSizeServer() const |
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[567] | 173 | { |
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| 174 | return nZoomSize_; |
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| 175 | } |
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[552] | 176 | } // namespace xios |
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