1 | #ifndef __ONE_SIDED_CLIENT_BUFFER_HPP__ |
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2 | #define __ONE_SIDED_CLIENT_BUFFER_HPP__ |
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3 | |
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4 | #include "xios_spl.hpp" |
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5 | #include "buffer_out.hpp" |
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6 | #include "mpi.hpp" |
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7 | #include "cxios.hpp" |
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8 | #include "event_client.hpp" |
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9 | #include "one_sided_cs_buffer_base.hpp" |
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10 | |
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11 | namespace xios |
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12 | { |
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13 | extern CLogType logProtocol ; |
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14 | |
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15 | class COneSidedClientBuffer : public COneSidedCSBufferBase |
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16 | { |
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17 | class CBuffer |
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18 | { |
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19 | char* buffer_ ; |
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20 | size_t start_ ; |
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21 | size_t end_ ; |
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22 | size_t count_ ; |
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23 | size_t size_ ; |
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24 | bool fixed_ ; |
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25 | MPI_Win window_ ; |
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26 | |
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27 | public: |
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28 | CBuffer(MPI_Win window, size_t size, bool fixed) : start_(size), end_(0), count_(0), size_(size), fixed_(fixed), window_(window) |
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29 | { |
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30 | size_t trueSize = (size/8 + 1)*8 + 8 ; // seems to have some problem with OpenMPi/UCX when trying to tranfer 1 byte |
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31 | // at the end of the buffer. Alignment problem ? Or simple bug ? Seems that allocate |
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32 | // greater buffer solves the problem |
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33 | MPI_Alloc_mem(trueSize, MPI_INFO_NULL, &buffer_) ; |
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34 | info(logProtocol)<<"Attach memory to windows : addr="<<(MPI_Aint)buffer_<<" count="<<size<<endl ; |
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35 | |
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36 | MPI_Win_attach(window_, buffer_, trueSize) ; |
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37 | |
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38 | } |
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39 | ~CBuffer() |
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40 | { |
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41 | if (count_>0) ERROR("COneSidedClientBuffer::~CBuffer()",<<"Try to delete buffer that is not empty"<<std::endl) ; |
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42 | MPI_Win_detach(window_, buffer_) ; |
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43 | MPI_Free_mem(buffer_) ; |
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44 | info(logProtocol)<<"Detach memory from windows : addr="<<(MPI_Aint)buffer_<<" count="<<size_<<endl ; |
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45 | } |
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46 | |
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47 | void write(char** buffer, size_t& size, MPI_Aint& addr, size_t& start, size_t& count) |
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48 | { |
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49 | addr = 0 ; |
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50 | count = 0 ; |
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51 | if (end_ < start_) |
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52 | { |
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53 | if (start_-end_ >= size) |
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54 | { |
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55 | count=size ; |
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56 | size = 0 ; |
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57 | start=end_ ; |
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58 | MPI_Get_address(&buffer_[start], &addr) ; |
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59 | end_ += count ; |
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60 | count_+= count ; |
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61 | memcpy(&buffer_[start], *buffer, count) ; |
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62 | *buffer+=count ; |
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63 | } |
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64 | else |
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65 | { |
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66 | count = start_-end_ ; |
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67 | size -= count ; |
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68 | start=end_ ; |
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69 | MPI_Get_address(&buffer_[start], &addr) ; |
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70 | end_ = start_ ; |
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71 | count_+=count ; |
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72 | memcpy(&buffer_[start], *buffer, count) ; |
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73 | *buffer+=count ; |
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74 | } |
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75 | } |
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76 | else if ( end_> start_ ) |
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77 | { |
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78 | if (size_-end_ >= size) |
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79 | { |
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80 | count = size ; |
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81 | size = 0; |
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82 | start=end_ ; |
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83 | MPI_Get_address(&buffer_[start], &addr) ; |
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84 | end_ += count ; |
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85 | count_ += count ; |
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86 | memcpy(&buffer_[start], *buffer, count) ; |
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87 | *buffer+=count ; |
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88 | } |
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89 | else |
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90 | { |
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91 | count = size_ - end_ ; |
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92 | size -= count ; |
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93 | start=end_ ; |
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94 | MPI_Get_address(&buffer_[start], &addr) ; |
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95 | end_ = 0 ; |
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96 | count_+= count ; |
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97 | memcpy(&buffer_[start], *buffer, count) ; |
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98 | *buffer+=count ; |
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99 | } |
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100 | } |
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101 | else if (end_==start_) |
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102 | { |
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103 | count = 0 ; |
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104 | } |
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105 | |
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106 | // check |
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107 | |
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108 | if (count!=0) |
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109 | { |
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110 | MPI_Aint startBufferAddr,endBufferAddr ; |
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111 | MPI_Get_address(&buffer_[0], &startBufferAddr) ; |
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112 | MPI_Get_address(&buffer_[size_-1], &endBufferAddr) ; |
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113 | |
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114 | if (addr<startBufferAddr || MPI_Aint_add(addr,count-1)>endBufferAddr) |
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115 | { |
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116 | ERROR("COneSidedClientBuffer::CBuffer::write(char** buffer, size_t& size, MPI_Aint& addr, size_t& start, size_t& count)",<<" out of bounds"<<std::endl) ; |
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117 | } |
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118 | |
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119 | } |
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120 | } |
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121 | |
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122 | void free(size_t start, size_t count) |
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123 | { |
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124 | start_ = start+count-1 ; |
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125 | count_ -= count ; |
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126 | } |
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127 | |
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128 | size_t remain(void) { return size_-count_; } |
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129 | size_t getSize(void) { return size_ ;} |
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130 | size_t getCount(void) {return count_ ;} |
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131 | size_t isFixed(void) {return fixed_;} |
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132 | } ; |
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133 | |
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134 | public: |
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135 | COneSidedClientBuffer(MPI_Comm& interComm, int serverRank, MPI_Comm& commSelf, MPI_Comm& interCommMerged, int intraServerRank) ; |
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136 | void newBuffer(size_t size, bool fixed) ; |
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137 | bool isBufferFree(size_t size) ; |
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138 | int writeBuffer(char* buff, size_t size) ; |
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139 | void freeBuffer(MPI_Aint addr) ; |
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140 | bool freeBloc(MPI_Aint addr) ; |
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141 | bool writeEvent(size_t timeLine, CEventClient& event) ; |
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142 | bool isEmpty(void) { return blocs_.empty() ;} |
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143 | bool isNotifiedFinalized(void) { eventLoop() ; return buffers_.empty() && isFinalized_ ;} |
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144 | void setFixed(size_t size) { fixed_=true ; fixedSize_=size ;} |
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145 | void setGrowable(double growingFactor) { fixed_= false ; growingFactor_=growingFactor;} |
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146 | void setGrowingFactor(double growingFactor) {growingFactor_=growingFactor;} |
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147 | void eventLoop(void) ; |
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148 | void sendTimelineEvent(size_t timeline, int nbSenders, int nbBlocs) ; |
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149 | void sendResizeBufferEvent(size_t timeline, size_t currentBufferSize_) ; |
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150 | void sendNewBuffer(void) ; |
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151 | void createWindow(MPI_Comm& commSelf, MPI_Comm& interCommMerged, int intraServerRank ) ; |
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152 | |
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153 | private : |
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154 | |
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155 | struct SBloc |
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156 | { |
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157 | MPI_Aint addr ; |
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158 | CBuffer* buffer ; |
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159 | size_t start ; |
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160 | int count ; |
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161 | int window ; |
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162 | } ; |
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163 | |
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164 | struct SRequest |
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165 | { |
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166 | CBufferOut* buffer ; |
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167 | MPI_Request mpiRequest ; |
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168 | } ; |
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169 | |
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170 | MPI_Aint* control_ ; |
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171 | |
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172 | MPI_Comm interComm_; |
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173 | MPI_Comm winComm_ ; |
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174 | |
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175 | MPI_Win window_ ; |
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176 | vector<MPI_Win> windows_ ; |
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177 | vector<bool> usedWindows_ ; |
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178 | int currentWindow_ ; |
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179 | int maxWindows_ ; |
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180 | |
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181 | MPI_Win winControl_ ; |
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182 | int serverRank_ ; |
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183 | |
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184 | MPI_Comm interCommMerged_; |
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185 | int intraServerRank_ ; |
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186 | |
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187 | std::list<CBuffer*> buffers_ ; |
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188 | std::list<SBloc> blocs_ ; |
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189 | std::list<SBloc>::iterator lastBlocEvent_ ; |
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190 | CBuffer* currentBuffer_=nullptr ; |
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191 | std::list<SRequest> requests_ ; |
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192 | |
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193 | bool fixed_=false; |
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194 | size_t fixedSize_ = 0 ; |
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195 | size_t currentBufferSize_= 0 ; |
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196 | double growingFactor_ = 2. ; |
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197 | MPI_Aint lastFreedBloc_=0 ; |
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198 | bool isFinalized_ = false ; |
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199 | |
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200 | } ; |
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201 | |
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202 | } |
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203 | |
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204 | |
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205 | #endif |
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