[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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| 10 | |
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| 11 | namespace xios { |
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[553] | 12 | |
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[653] | 13 | CDistributionServer::CDistributionServer(int rank, int dims, const CArray<size_t,1>& globalIndex) |
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[552] | 14 | : CDistribution(rank, dims, globalIndex), nGlobal_(), nZoomSize_(), nZoomBegin_() |
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[551] | 15 | { |
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| 16 | } |
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| 17 | |
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[552] | 18 | CDistributionServer::CDistributionServer(int rank, const std::vector<int>& nZoomBegin, |
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| 19 | const std::vector<int>& nZoomSize, const std::vector<int>& nGlobal) |
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| 20 | : CDistribution(rank, nGlobal.size()), nGlobal_(nGlobal), nZoomSize_(nZoomSize), nZoomBegin_(nZoomBegin) |
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[551] | 21 | { |
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| 22 | createGlobalIndex(); |
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| 23 | } |
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| 24 | |
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[567] | 25 | CDistributionServer::CDistributionServer(int rank, const std::vector<int>& nZoomBegin, |
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| 26 | const std::vector<int>& nZoomSize, |
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| 27 | const std::vector<int>& nZoomBeginGlobal, |
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| 28 | const std::vector<int>& nGlobal) |
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| 29 | : CDistribution(rank, nGlobal.size()), nGlobal_(nGlobal), nZoomBeginGlobal_(nZoomBeginGlobal), |
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| 30 | nZoomSize_(nZoomSize), nZoomBegin_(nZoomBegin) |
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| 31 | { |
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| 32 | createGlobalIndex(); |
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| 33 | } |
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| 34 | |
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[551] | 35 | CDistributionServer::~CDistributionServer() |
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| 36 | { |
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| 37 | } |
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| 38 | |
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[552] | 39 | /*! |
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| 40 | Create global index on server side |
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| 41 | Like the similar function on client side, this function serves on creating global index |
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| 42 | for data written by the server. The global index is used to calculating local index of data |
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| 43 | written on each server |
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| 44 | */ |
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| 45 | void CDistributionServer::createGlobalIndex() |
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[551] | 46 | { |
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[552] | 47 | size_t idx = 0, ssize = 1; |
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| 48 | for (int i = 0; i < nZoomSize_.size(); ++i) ssize *= nZoomSize_[i]; |
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| 49 | |
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[653] | 50 | this->globalIndex_.resize(ssize); |
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[552] | 51 | std::vector<int> idxLoop(this->getDims(),0); |
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| 52 | std::vector<int> currentIndex(this->getDims()); |
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| 53 | int innerLoopSize = nZoomSize_[0]; |
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| 54 | |
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| 55 | while (idx<ssize) |
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[551] | 56 | { |
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[552] | 57 | for (int i = 0; i < this->dims_-1; ++i) |
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| 58 | { |
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| 59 | if (idxLoop[i] == nZoomSize_[i]) |
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| 60 | { |
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| 61 | idxLoop[i] = 0; |
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| 62 | ++idxLoop[i+1]; |
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| 63 | } |
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| 64 | } |
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| 65 | |
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| 66 | for (int i = 1; i < this->dims_; ++i) currentIndex[i] = idxLoop[i] + nZoomBegin_[i]; |
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| 67 | |
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| 68 | size_t mulDim, globalIndex; |
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| 69 | for (int i = 0; i < innerLoopSize; ++i) |
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| 70 | { |
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| 71 | mulDim = 1; |
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| 72 | globalIndex = i + nZoomBegin_[0]; |
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| 73 | |
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| 74 | for (int k = 1; k < this->dims_; ++k) |
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| 75 | { |
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| 76 | mulDim *= nGlobal_[k-1]; |
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| 77 | globalIndex += (currentIndex[k])*mulDim; |
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| 78 | } |
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[653] | 79 | this->globalIndex_(idx) = globalIndex; |
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[552] | 80 | ++idx; |
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| 81 | } |
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| 82 | idxLoop[0] += innerLoopSize; |
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[551] | 83 | } |
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| 84 | } |
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| 85 | |
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[552] | 86 | /*! |
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| 87 | Compute local index for writing data on server |
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| 88 | \param [in] globalIndex global index received from client |
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| 89 | \return local index of written data |
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| 90 | */ |
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| 91 | CArray<size_t,1> CDistributionServer::computeLocalIndex(const CArray<size_t,1>& globalIndex) |
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[551] | 92 | { |
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[653] | 93 | CArray<size_t,1>::const_iterator itBegin = this->globalIndex_.begin(), |
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| 94 | itEnd = this->globalIndex_.end(), it; |
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[551] | 95 | |
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[552] | 96 | int ssize = globalIndex.numElements(), idx = 0; |
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| 97 | CArray<size_t,1> localIndex(ssize); |
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| 98 | it = itBegin; |
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| 99 | for (int i = 0; i < ssize; ++i) |
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[551] | 100 | { |
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[567] | 101 | it = std::find(itBegin, itEnd, globalIndex(i)); |
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| 102 | // it = std::lower_bound(it, itEnd, globalIndex(i)); |
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[552] | 103 | if (itEnd != it) |
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| 104 | { |
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| 105 | localIndex(idx) = std::distance(itBegin, it); |
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| 106 | ++idx; |
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| 107 | } |
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[551] | 108 | } |
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[552] | 109 | |
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| 110 | return localIndex; |
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| 111 | } |
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| 112 | |
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| 113 | /*! |
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| 114 | Compute local index for writing data on server |
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| 115 | \param [in] globalIndex Global index received from client |
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| 116 | */ |
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| 117 | void CDistributionServer::computeLocalIndex(CArray<size_t,1>& globalIndex) |
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| 118 | { |
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[653] | 119 | CArray<size_t,1>::const_iterator itBegin = this->globalIndex_.begin(), |
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| 120 | itEnd = this->globalIndex_.end(), it; |
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[552] | 121 | |
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| 122 | int ssize = globalIndex.numElements(), idx = 0; |
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| 123 | CArray<size_t,1> localIndex(ssize); |
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| 124 | it = itBegin; |
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| 125 | for (int i = 0; i < ssize; ++i) |
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[551] | 126 | { |
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[567] | 127 | it = std::find(itBegin, itEnd, globalIndex(i)); |
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| 128 | // it = std::lower_bound(it, itEnd, globalIndex(i)); |
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[552] | 129 | if (itEnd != it) |
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| 130 | { |
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| 131 | localIndex(idx) = std::distance(itBegin, it); |
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| 132 | ++idx; |
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| 133 | } |
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[551] | 134 | } |
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| 135 | |
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[552] | 136 | globalIndex = localIndex; |
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[551] | 137 | } |
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| 138 | |
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[567] | 139 | |
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| 140 | std::vector<int> CDistributionServer::getZoomBeginGlobal() const |
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| 141 | { |
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| 142 | return nZoomBeginGlobal_; |
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| 143 | } |
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| 144 | |
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| 145 | std::vector<int> CDistributionServer::getZoomBeginServer() const |
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| 146 | { |
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| 147 | return nZoomBegin_; |
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| 148 | } |
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| 149 | |
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| 150 | std::vector<int> CDistributionServer::getZoomSizeServer() const |
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| 151 | { |
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| 152 | return nZoomSize_; |
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| 153 | } |
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[552] | 154 | } // namespace xios |
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