[2343] | 1 | #include "one_sided_client_buffer.hpp" |
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| 2 | #include "event_client.hpp" |
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| 3 | #include "timer.hpp" |
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| 4 | |
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| 5 | namespace xios |
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| 6 | { |
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| 7 | |
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| 8 | static CLogType logProtocol("log_protocol") ; |
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| 9 | |
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| 10 | COneSidedClientBuffer::COneSidedClientBuffer(MPI_Comm& interComm, int serverRank, MPI_Comm& commSelf, MPI_Comm& interCommMerged, int intraServerRank) : interComm_(interComm), serverRank_(serverRank) |
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| 11 | { |
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| 12 | |
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| 13 | MPI_Alloc_mem(controlSize_*sizeof(MPI_Aint), MPI_INFO_NULL, &control_) ; |
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| 14 | control_[CONTROL_ADDR] = 0 ; |
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| 15 | control_[CONTROL_FINALIZE] = 0 ; |
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| 16 | sendNewBuffer() ; |
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| 17 | createWindow(commSelf, interCommMerged, intraServerRank ) ; |
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| 18 | } |
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| 19 | |
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| 20 | void COneSidedClientBuffer::createWindow(MPI_Comm& commSelf, MPI_Comm& interCommMerged, int intraServerRank ) |
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| 21 | { |
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| 22 | CTimer::get("create Windows").resume() ; |
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| 23 | MPI_Comm interComm ; |
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| 24 | MPI_Intercomm_create(commSelf, 0, interCommMerged, intraServerRank, 0, &interComm) ; |
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| 25 | MPI_Intercomm_merge(interComm, false, &winComm_) ; |
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| 26 | int rank ; |
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| 27 | MPI_Comm_rank(winComm_,&rank) ; |
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| 28 | info(logProtocol)<<"Windows rank="<<rank<<endl ; |
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| 29 | CXios::getMpiGarbageCollector().registerCommunicator(winComm_) ; |
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| 30 | MPI_Comm_free(&interComm) ; |
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| 31 | |
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| 32 | maxWindows_=MAX_WINDOWS ; |
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| 33 | windows_.resize(maxWindows_) ; |
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| 34 | usedWindows_.resize(maxWindows_,false) ; |
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| 35 | for(int i=0;i<maxWindows_;++i) |
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| 36 | { |
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| 37 | MPI_Win_create_dynamic(MPI_INFO_NULL, winComm_, &windows_[i]); |
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| 38 | CXios::getMpiGarbageCollector().registerWindow(windows_[i]) ; |
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| 39 | } |
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| 40 | currentWindow_=-1 ; |
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| 41 | |
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| 42 | MPI_Win_create_dynamic(MPI_INFO_NULL, winComm_, &winControl_); |
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| 43 | CXios::getMpiGarbageCollector().registerWindow(winControl_) ; |
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| 44 | |
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| 45 | |
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| 46 | |
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| 47 | CTimer::get("create Windows").suspend() ; |
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| 48 | |
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| 49 | MPI_Barrier(winComm_) ; |
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| 50 | MPI_Win_attach(winControl_, control_, controlSize_*sizeof(MPI_Aint)) ; |
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| 51 | MPI_Barrier(winComm_) ; |
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| 52 | // MPI_Win_lock(MPI_LOCK_EXCLUSIVE, 0, 0, winControl_) ; |
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| 53 | // MPI_Win_unlock(0,winControl_) ; |
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| 54 | |
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| 55 | } |
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| 56 | |
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| 57 | |
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| 58 | |
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| 59 | void COneSidedClientBuffer::newBuffer(size_t size, bool fixed) |
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| 60 | { |
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| 61 | currentWindow_=(currentWindow_+1)%maxWindows_ ; |
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| 62 | if (usedWindows_[currentWindow_]) |
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| 63 | { |
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| 64 | ERROR("void COneSidedClientBuffer::newBuffer(size_t size, bool fixed)",<<"Try to alloc buffer to a window already in use"<<endl ) ; |
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| 65 | } |
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| 66 | else usedWindows_[currentWindow_]=true ; |
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| 67 | buffers_.push_back(new CBuffer(windows_[currentWindow_], size, fixed)); |
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| 68 | currentBuffer_=buffers_.back() ; |
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| 69 | info(logProtocol)<<" Nb attached memory blocs="<<buffers_.size()<<endl ; |
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| 70 | } |
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| 71 | |
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| 72 | bool COneSidedClientBuffer::isBufferFree(size_t size) |
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| 73 | { |
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| 74 | if (buffers_.size()>maxWindows_-1) return false ; |
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| 75 | CBuffer* buffer ; |
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| 76 | if (buffers_.size()==0) return true ; |
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| 77 | else if (!fixed) return true ; |
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| 78 | else |
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| 79 | { |
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| 80 | buffer = buffers_.back() ; |
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| 81 | if (buffer->remain()>=size) return true ; |
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| 82 | else |
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| 83 | { |
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| 84 | if (buffer->isFixed()) |
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| 85 | { |
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| 86 | if ( size > buffer->getSize()) return true ; |
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| 87 | else return false ; |
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| 88 | } |
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| 89 | else return true ; |
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| 90 | } |
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| 91 | } |
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| 92 | } |
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| 93 | |
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| 94 | int COneSidedClientBuffer::writeBuffer(char* buffer, size_t size) |
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| 95 | { |
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| 96 | MPI_Aint addr ; |
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| 97 | size_t start ; |
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| 98 | size_t count ; |
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| 99 | int nbBlocs=0 ; |
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| 100 | |
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| 101 | if (isBufferFree(size)) |
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| 102 | { |
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| 103 | while (size > 0) |
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| 104 | { |
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| 105 | if (buffers_.empty()) |
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| 106 | { |
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| 107 | if (fixed_) newBuffer(fixedSize_,fixed_) ; |
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| 108 | else |
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| 109 | { |
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| 110 | if (currentBufferSize_==0) currentBufferSize_=size ; |
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| 111 | newBuffer(currentBufferSize_, fixed_) ; |
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| 112 | } |
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| 113 | } |
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| 114 | CBuffer* currentBuffer = buffers_.back() ; |
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| 115 | |
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| 116 | MPI_Win_lock(MPI_LOCK_SHARED, 0, 0, windows_[currentWindow_]) ; |
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| 117 | currentBuffer->write(&buffer, size, addr, start, count) ; |
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| 118 | if (count > 0) |
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| 119 | { |
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| 120 | blocs_.push_back({addr,currentBuffer_, start, count, currentWindow_}) ; |
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| 121 | nbBlocs++ ; |
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| 122 | } |
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| 123 | |
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| 124 | currentBuffer->write(&buffer, size, addr, start, count) ; |
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| 125 | MPI_Win_unlock(0,windows_[currentWindow_]) ; |
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| 126 | |
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| 127 | if (count > 0) |
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| 128 | { |
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| 129 | blocs_.push_back({addr,currentBuffer_, start, count, currentWindow_}) ; |
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| 130 | nbBlocs++ ; |
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| 131 | } |
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| 132 | |
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| 133 | if (size>0) |
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| 134 | { |
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| 135 | if (fixed_) |
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| 136 | { |
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| 137 | currentBufferSize_ = fixedSize_ ; |
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| 138 | newBuffer(currentBufferSize_,fixed_) ; |
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| 139 | } |
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| 140 | else |
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| 141 | { |
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| 142 | currentBufferSize_ = max((size_t)(currentBufferSize_*growingFactor_), size) ; |
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| 143 | newBuffer(currentBufferSize_,fixed_) ; |
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| 144 | } |
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| 145 | } |
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| 146 | } |
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| 147 | // send message here ? |
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| 148 | return nbBlocs ; |
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| 149 | } |
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| 150 | else return 0 ; |
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| 151 | } |
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| 152 | |
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| 153 | void COneSidedClientBuffer::freeBuffer(MPI_Aint addr) |
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| 154 | { |
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| 155 | // if (addr != lastFreedBloc_) |
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| 156 | if (addr != 0) |
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| 157 | { |
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| 158 | while(freeBloc(addr)) ; |
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| 159 | // lastFreedBloc_ = addr ; |
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| 160 | } |
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| 161 | |
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| 162 | if (isFinalized_ && !buffers_.empty() && buffers_.front()->getCount()==0) |
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| 163 | { |
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| 164 | delete buffers_.front() ; |
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| 165 | buffers_.pop_front() ; |
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| 166 | } |
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| 167 | } |
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| 168 | |
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| 169 | bool COneSidedClientBuffer::freeBloc(MPI_Aint addr) |
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| 170 | { |
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| 171 | SBloc& bloc = blocs_.front() ; |
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| 172 | bloc.buffer->free(bloc.start, bloc.count) ; |
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| 173 | if (bloc.buffer->getCount()==0) |
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| 174 | if (buffers_.size()>1) |
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| 175 | { |
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| 176 | usedWindows_[bloc.window]=false ; |
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| 177 | delete buffers_.front() ; |
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| 178 | buffers_.pop_front() ; |
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| 179 | } |
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| 180 | |
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| 181 | if (addr != bloc.addr) |
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| 182 | { |
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| 183 | blocs_.pop_front() ; |
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| 184 | return true ; |
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| 185 | } |
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| 186 | else |
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| 187 | { |
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| 188 | blocs_.pop_front() ; |
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| 189 | return false ; |
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| 190 | } |
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| 191 | |
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| 192 | } |
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| 193 | |
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| 194 | bool COneSidedClientBuffer::writeEvent(size_t timeline, CEventClient& event) |
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| 195 | { |
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| 196 | size_t size = event.getSize() ; |
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| 197 | if (isBufferFree(size)) |
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| 198 | { |
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| 199 | CBufferOut buffer(size) ; |
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| 200 | event.send(timeline, size, &buffer) ; |
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| 201 | size_t bufferSizeBefore = currentBufferSize_ ; |
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| 202 | int nbBlocs = writeBuffer((char*)buffer.start(),buffer.count()) ; |
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| 203 | if (currentBufferSize_!=bufferSizeBefore) sendResizeBufferEvent(timeline,currentBufferSize_) ; |
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| 204 | sendTimelineEvent(timeline, event.getNbSender(), nbBlocs) ; |
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| 205 | return true ; |
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| 206 | } |
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| 207 | else return false ; |
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| 208 | } |
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| 209 | |
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| 210 | void COneSidedClientBuffer::eventLoop(void) |
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| 211 | { |
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| 212 | // check to free requests |
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| 213 | int flag ; |
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| 214 | bool out = true; |
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| 215 | SRequest request ; |
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| 216 | while (!requests_.empty() && out) |
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| 217 | { |
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| 218 | request = requests_.front() ; |
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| 219 | MPI_Test(&request.mpiRequest, &flag, MPI_STATUS_IGNORE) ; |
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| 220 | if (flag==true) |
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| 221 | { |
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| 222 | delete request.buffer ; |
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| 223 | requests_.pop_front() ; |
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| 224 | } |
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| 225 | else out=false; |
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| 226 | } |
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| 227 | |
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| 228 | // check to free blocs |
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| 229 | MPI_Aint addr ; |
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| 230 | MPI_Aint finalize ; |
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| 231 | MPI_Win_lock(MPI_LOCK_SHARED, 0, 0, winControl_) ; |
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| 232 | addr = control_[CONTROL_ADDR] ; |
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| 233 | control_[CONTROL_ADDR] = 0 ; |
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| 234 | finalize = control_[CONTROL_FINALIZE] ; |
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| 235 | MPI_Win_unlock(0, winControl_) ; |
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| 236 | freeBuffer(addr) ; |
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| 237 | if (finalize==1) isFinalized_=true ; |
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| 238 | |
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| 239 | |
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| 240 | } |
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| 241 | |
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| 242 | void COneSidedClientBuffer::sendTimelineEvent(size_t timeline, int nbSenders, int nbBlocs) |
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| 243 | { |
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| 244 | ostringstream outStr ; |
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| 245 | SRequest request ; |
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| 246 | request.buffer = new CBufferOut(sizeof(timeline)+sizeof(nbSenders)+sizeof(nbBlocs)+(sizeof(MPI_Aint)+sizeof(int)+sizeof(int))*nbBlocs) ; |
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| 247 | *(request.buffer)<<timeline<<nbSenders<<nbBlocs ; |
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| 248 | if (info.isActive(logProtocol)) outStr<<"New timeline event sent to server rank "<<serverRank_<<" : timeLine="<<timeline<<" nbSenders="<<nbSenders<<" nbBlocs="<<nbBlocs<<endl ; |
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| 249 | auto it = blocs_.end() ; |
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| 250 | for(int i=0 ; i<nbBlocs; ++i,--it) ; |
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| 251 | for(int i=0 ; i<nbBlocs; ++i,++it) |
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| 252 | { |
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| 253 | *(request.buffer) << it->addr << it->count << it->window; |
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| 254 | |
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| 255 | if (info.isActive(logProtocol)) |
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| 256 | { |
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| 257 | size_t checksum=0 ; |
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| 258 | for(size_t j=0;j<it->count;j++) checksum+=((unsigned char*)(it->addr))[j] ; |
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| 259 | outStr<<"Bloc "<<i<<" addr="<<it->addr<<" count="<<it->count<<" checksum="<<checksum<<" ; " ; |
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| 260 | } |
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| 261 | } |
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| 262 | MPI_Isend(request.buffer->start(),request.buffer->count(), MPI_CHAR, serverRank_, 20, interComm_, &request.mpiRequest ) ; |
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| 263 | info(logProtocol)<<outStr.str()<<endl ; |
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| 264 | requests_.push_back(request) ; |
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| 265 | } |
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| 266 | |
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| 267 | void COneSidedClientBuffer::sendResizeBufferEvent(size_t timeline, size_t size) |
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| 268 | { |
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| 269 | SRequest request ; |
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| 270 | request.buffer = new CBufferOut(sizeof(EVENT_BUFFER_RESIZE)+sizeof(timeline)+sizeof(size)) ; |
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| 271 | *(request.buffer)<<EVENT_BUFFER_RESIZE<<timeline<<size ; |
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| 272 | MPI_Isend(request.buffer->start(),request.buffer->count(), MPI_CHAR, serverRank_, 20, interComm_, &request.mpiRequest ) ; |
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| 273 | requests_.push_back(request) ; |
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| 274 | } |
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| 275 | |
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| 276 | void COneSidedClientBuffer::sendNewBuffer(void) |
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| 277 | { |
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| 278 | MPI_Aint controlAddr ; |
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| 279 | MPI_Get_address(control_, &controlAddr) ; |
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| 280 | MPI_Send(&controlAddr, 1, MPI_AINT, serverRank_, 20, interComm_) ; |
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| 281 | } |
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| 282 | |
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| 283 | } |
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