1 | /*! |
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2 | \file domain_algorithm_generate_rectilinear.cpp |
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3 | \author Ha NGUYEN |
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4 | \since 31 Aug 2015 |
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5 | \date 31 Aug 2015 |
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6 | |
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7 | \brief Algorithm for automatic generation of rectilinear domain. |
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8 | */ |
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9 | #include "domain_algorithm_generate_rectilinear.hpp" |
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10 | #include "grid.hpp" |
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11 | #include "domain.hpp" |
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12 | #include "context.hpp" |
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13 | #include "context_client.hpp" |
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14 | #include "generate_rectilinear_domain.hpp" |
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15 | |
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16 | namespace xios { |
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17 | |
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18 | CDomainAlgorithmGenerateRectilinear::CDomainAlgorithmGenerateRectilinear(CDomain* domainDestination, CDomain* domainSource, |
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19 | CGrid* gridSource, CGenerateRectilinearDomain* genRectDomain) |
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20 | : CDomainAlgorithmTransformation(domainDestination, domainSource), gridSrc_(gridSource), nbDomainDistributedPart_(0) |
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21 | { |
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22 | genRectDomain->checkValid(domainSource); |
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23 | computeDistributionGridSource(); |
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24 | fillInAttributesDomainDestination(); |
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25 | } |
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26 | |
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27 | /*! |
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28 | Compute the index mapping between domain on grid source and one on grid destination |
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29 | */ |
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30 | void CDomainAlgorithmGenerateRectilinear::computeIndexSourceMapping() |
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31 | { |
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32 | /* Nothing to do */ |
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33 | } |
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34 | |
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35 | /*! |
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36 | Calculate the number of distributed parts on domain source |
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37 | */ |
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38 | void CDomainAlgorithmGenerateRectilinear::computeDistributionGridSource() |
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39 | { |
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40 | CContext* context = CContext::getCurrent(); |
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41 | CContextClient* client = context->client; |
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42 | |
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43 | std::vector<CDomain*> domListSrcP = gridSrc_->getDomains(); |
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44 | std::vector<CAxis*> axisListSrcP = gridSrc_->getAxis(); |
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45 | |
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46 | for (int i = 0; i < domListSrcP.size(); ++i) // support we have only domain, more than one, for now, dont know how to process |
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47 | { |
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48 | // First, find (roundly) distribution of associated axis (if any) |
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49 | if (axisListSrcP.empty()) nbDomainDistributedPart_ = client->clientSize; |
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50 | else |
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51 | { |
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52 | gridSrc_->solveAxisRef(false); |
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53 | int nbAxis = axisListSrcP.size(); |
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54 | std::vector<int> nbLocalAxis(nbAxis, 0); |
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55 | for (int j = 0; j < nbAxis; ++j) |
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56 | { |
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57 | std::vector<int> globalAxisIndex(axisListSrcP[j]->n); |
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58 | for (int idx = 0; idx < axisListSrcP[j]->n; ++idx) |
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59 | globalAxisIndex[idx] = axisListSrcP[j]->begin + idx; |
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60 | HashXIOS<int> hashFunc; |
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61 | StdSize hashValue = hashFunc.hashVec(globalAxisIndex); |
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62 | std::vector<StdSize> recvBuff(client->clientSize); |
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63 | MPI_Gather(&hashValue, 1, MPI_UNSIGNED_LONG, |
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64 | &recvBuff[0], 1, MPI_UNSIGNED_LONG, |
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65 | 0, |
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66 | client->intraComm); |
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67 | if (0 == client->clientRank) |
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68 | { |
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69 | std::set<StdSize> setTmp; |
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70 | for (int k = 0; k < recvBuff.size(); ++k) |
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71 | { |
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72 | if (setTmp.end() == setTmp.find(recvBuff[k])) |
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73 | { |
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74 | ++nbLocalAxis[j]; |
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75 | setTmp.insert(recvBuff[k]); |
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76 | } |
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77 | } |
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78 | } |
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79 | |
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80 | MPI_Bcast(&nbLocalAxis[0], nbAxis, MPI_INT, |
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81 | 0, client->intraComm); |
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82 | } |
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83 | |
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84 | int nbAxisDistributedPart = 1; |
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85 | for (int j = 0; j < nbAxis; ++j) nbAxisDistributedPart *= nbLocalAxis[j]; |
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86 | nbDomainDistributedPart_ = client->clientSize/nbAxisDistributedPart; |
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87 | } |
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88 | } |
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89 | } |
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90 | |
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91 | /*! |
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92 | Fill in all necessary attributes of domain destination and their values |
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93 | */ |
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94 | void CDomainAlgorithmGenerateRectilinear::fillInAttributesDomainDestination() |
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95 | { |
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96 | domainDest_->redistribute(nbDomainDistributedPart_); |
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97 | } |
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98 | |
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99 | } |
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