1 | #include "xios_spl.hpp" |
---|
2 | #include "context_client.hpp" |
---|
3 | #include "context_server.hpp" |
---|
4 | #include "event_client.hpp" |
---|
5 | #include "buffer_out.hpp" |
---|
6 | #include "buffer_client.hpp" |
---|
7 | #include "type.hpp" |
---|
8 | #include "event_client.hpp" |
---|
9 | #include "context.hpp" |
---|
10 | #include "mpi.hpp" |
---|
11 | #include "timer.hpp" |
---|
12 | #include "cxios.hpp" |
---|
13 | |
---|
14 | namespace xios |
---|
15 | { |
---|
16 | /*! |
---|
17 | \param [in] parent Pointer to context on client side |
---|
18 | \param [in] intraComm_ communicator of group client |
---|
19 | \param [in] interComm_ communicator of group server |
---|
20 | \cxtSer [in] cxtSer Pointer to context of server side. (It is only used on case of attached mode) |
---|
21 | */ |
---|
22 | CContextClient::CContextClient(CContext* parent, ep_lib::MPI_Comm intraComm_, ep_lib::MPI_Comm interComm_, CContext* cxtSer) |
---|
23 | : mapBufferSize_(), parentServer(cxtSer), maxBufferedEvents(4) |
---|
24 | { |
---|
25 | context = parent; |
---|
26 | intraComm = intraComm_; |
---|
27 | interComm = interComm_; |
---|
28 | MPI_Comm_rank(intraComm, &clientRank); |
---|
29 | MPI_Comm_size(intraComm, &clientSize); |
---|
30 | |
---|
31 | int flag; |
---|
32 | MPI_Comm_test_inter(interComm, &flag); |
---|
33 | if (flag) MPI_Comm_remote_size(interComm, &serverSize); |
---|
34 | else MPI_Comm_size(interComm, &serverSize); |
---|
35 | |
---|
36 | if (clientSize < serverSize) |
---|
37 | { |
---|
38 | int serverByClient = serverSize / clientSize; |
---|
39 | int remain = serverSize % clientSize; |
---|
40 | int rankStart = serverByClient * clientRank; |
---|
41 | |
---|
42 | if (clientRank < remain) |
---|
43 | { |
---|
44 | serverByClient++; |
---|
45 | rankStart += clientRank; |
---|
46 | } |
---|
47 | else |
---|
48 | rankStart += remain; |
---|
49 | |
---|
50 | for (int i = 0; i < serverByClient; i++) |
---|
51 | ranksServerLeader.push_back(rankStart + i); |
---|
52 | } |
---|
53 | else |
---|
54 | { |
---|
55 | int clientByServer = clientSize / serverSize; |
---|
56 | int remain = clientSize % serverSize; |
---|
57 | |
---|
58 | if (clientRank < (clientByServer + 1) * remain) |
---|
59 | { |
---|
60 | if (clientRank % (clientByServer + 1) == 0) |
---|
61 | ranksServerLeader.push_back(clientRank / (clientByServer + 1)); |
---|
62 | } |
---|
63 | else |
---|
64 | { |
---|
65 | int rank = clientRank - (clientByServer + 1) * remain; |
---|
66 | if (rank % clientByServer == 0) |
---|
67 | ranksServerLeader.push_back(remain + rank / clientByServer); |
---|
68 | } |
---|
69 | } |
---|
70 | |
---|
71 | timeLine = 0; |
---|
72 | } |
---|
73 | |
---|
74 | /*! |
---|
75 | In case of attached mode, the current context must be reset to context for client |
---|
76 | \param [in] event Event sent to server |
---|
77 | */ |
---|
78 | void CContextClient::sendEvent(CEventClient& event) |
---|
79 | { |
---|
80 | list<int> ranks = event.getRanks(); |
---|
81 | if (!event.isEmpty()) |
---|
82 | { |
---|
83 | list<int> sizes = event.getSizes(); |
---|
84 | |
---|
85 | list<CBufferOut*> buffList = getBuffers(ranks, sizes); |
---|
86 | |
---|
87 | event.send(timeLine, sizes, buffList); |
---|
88 | |
---|
89 | checkBuffers(ranks); |
---|
90 | } |
---|
91 | |
---|
92 | if (isAttachedModeEnabled()) |
---|
93 | { |
---|
94 | waitEvent(ranks); |
---|
95 | CContext::setCurrent(context->getId()); |
---|
96 | } |
---|
97 | |
---|
98 | timeLine++; |
---|
99 | } |
---|
100 | |
---|
101 | /*! |
---|
102 | If client is also server (attached mode), after sending event, it should process right away |
---|
103 | the incoming event. |
---|
104 | \param [in] ranks list rank of server connected this client |
---|
105 | */ |
---|
106 | void CContextClient::waitEvent(list<int>& ranks) |
---|
107 | { |
---|
108 | parentServer->server->setPendingEvent(); |
---|
109 | size_t pendingmapSize; |
---|
110 | while (checkBuffers(ranks)) |
---|
111 | { |
---|
112 | parentServer->server->listen(); |
---|
113 | parentServer->server->checkPendingRequest(); |
---|
114 | } |
---|
115 | |
---|
116 | while (parentServer->server->hasPendingEvent()) |
---|
117 | { |
---|
118 | parentServer->server->eventLoop(); |
---|
119 | } |
---|
120 | } |
---|
121 | |
---|
122 | /*! |
---|
123 | Setup buffer for each connection to server and verify their state to put content into them |
---|
124 | \param [in] serverList list of rank of connected server |
---|
125 | \param [in] sizeList size of message corresponding to each connection |
---|
126 | \return List of buffer input which event can be placed |
---|
127 | */ |
---|
128 | list<CBufferOut*> CContextClient::getBuffers(list<int>& serverList, list<int>& sizeList) |
---|
129 | { |
---|
130 | list<int>::iterator itServer, itSize; |
---|
131 | list<CClientBuffer*> bufferList; |
---|
132 | map<int,CClientBuffer*>::iterator it; |
---|
133 | list<CClientBuffer*>::iterator itBuffer; |
---|
134 | list<CBufferOut*> retBuffer; |
---|
135 | bool areBuffersFree; |
---|
136 | |
---|
137 | for (itServer = serverList.begin(); itServer != serverList.end(); itServer++) |
---|
138 | { |
---|
139 | it = buffers.find(*itServer); |
---|
140 | if (it == buffers.end()) |
---|
141 | { |
---|
142 | newBuffer(*itServer); |
---|
143 | it = buffers.find(*itServer); |
---|
144 | } |
---|
145 | bufferList.push_back(it->second); |
---|
146 | } |
---|
147 | |
---|
148 | CTimer::get("Blocking time").resume(); |
---|
149 | do |
---|
150 | { |
---|
151 | areBuffersFree = true; |
---|
152 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
---|
153 | areBuffersFree &= (*itBuffer)->isBufferFree(*itSize); |
---|
154 | |
---|
155 | if (!areBuffersFree) |
---|
156 | { |
---|
157 | checkBuffers(); |
---|
158 | context->server->listen(); |
---|
159 | } |
---|
160 | } while (!areBuffersFree); |
---|
161 | CTimer::get("Blocking time").suspend(); |
---|
162 | |
---|
163 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
---|
164 | { |
---|
165 | CBufferOut* m_buf = (*itBuffer)->getBuffer(*itSize); |
---|
166 | //retBuffer.push_back((*itBuffer)->getBuffer(*itSize)); |
---|
167 | //int m_size = retBuffer.size(); |
---|
168 | //retBuffer.resize(m_size+1); |
---|
169 | //m_size = retBuffer.size(); |
---|
170 | retBuffer.push_back(m_buf); |
---|
171 | } |
---|
172 | return retBuffer; |
---|
173 | } |
---|
174 | |
---|
175 | /*! |
---|
176 | Make a new buffer for a certain connection to server with specific rank |
---|
177 | \param [in] rank rank of connected server |
---|
178 | */ |
---|
179 | void CContextClient::newBuffer(int rank) |
---|
180 | { |
---|
181 | if (!mapBufferSize_.count(rank)) |
---|
182 | { |
---|
183 | error(0) << "WARNING: Unexpected request for buffer to communicate with server " << rank << std::endl; |
---|
184 | mapBufferSize_[rank] = CXios::minBufferSize; |
---|
185 | } |
---|
186 | CClientBuffer* buffer = buffers[rank] = new CClientBuffer(interComm, rank, mapBufferSize_[rank], maxBufferedEvents); |
---|
187 | // Notify the server |
---|
188 | CBufferOut* bufOut = buffer->getBuffer(sizeof(StdSize)); |
---|
189 | bufOut->put(mapBufferSize_[rank]); // Stupid C++ |
---|
190 | buffer->checkBuffer(); |
---|
191 | } |
---|
192 | |
---|
193 | /*! |
---|
194 | Verify state of buffers. Buffer is under pending state if there is no message on it |
---|
195 | \return state of buffers, pending(true), ready(false) |
---|
196 | */ |
---|
197 | bool CContextClient::checkBuffers(void) |
---|
198 | { |
---|
199 | map<int,CClientBuffer*>::iterator itBuff; |
---|
200 | bool pending = false; |
---|
201 | if(! buffers.empty()) |
---|
202 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) pending |= itBuff->second->checkBuffer(); |
---|
203 | return pending; |
---|
204 | } |
---|
205 | |
---|
206 | //! Release all buffers |
---|
207 | void CContextClient::releaseBuffers(void) |
---|
208 | { |
---|
209 | map<int,CClientBuffer*>::iterator itBuff; |
---|
210 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) delete itBuff->second; |
---|
211 | } |
---|
212 | |
---|
213 | /*! |
---|
214 | Verify state of buffers corresponding to a connection |
---|
215 | \param [in] ranks list rank of server to which client connects to |
---|
216 | \return state of buffers, pending(true), ready(false) |
---|
217 | */ |
---|
218 | bool CContextClient::checkBuffers(list<int>& ranks) |
---|
219 | { |
---|
220 | list<int>::iterator it; |
---|
221 | bool pending = false; |
---|
222 | for (it = ranks.begin(); it != ranks.end(); it++) pending |= buffers[*it]->checkBuffer(); |
---|
223 | return pending; |
---|
224 | } |
---|
225 | |
---|
226 | /*! |
---|
227 | * Set the buffer size for each connection. Warning: This function is collective. |
---|
228 | * |
---|
229 | * \param [in] mapSize maps the rank of the connected servers to the size of the correspoinding buffer |
---|
230 | * \param [in] maxEventSize maps the rank of the connected servers to the size of the biggest event |
---|
231 | */ |
---|
232 | void CContextClient::setBufferSize(const std::map<int,StdSize>& mapSize, const std::map<int,StdSize>& maxEventSize) |
---|
233 | { |
---|
234 | mapBufferSize_ = mapSize; |
---|
235 | |
---|
236 | // Compute the maximum number of events that can be safely buffered. |
---|
237 | double minBufferSizeEventSizeRatio = std::numeric_limits<double>::max(); |
---|
238 | for (std::map<int,StdSize>::const_iterator it = mapSize.begin(), ite = mapSize.end(); it != ite; ++it) |
---|
239 | { |
---|
240 | double ratio = double(it->second) / maxEventSize.at(it->first); |
---|
241 | if (ratio < minBufferSizeEventSizeRatio) minBufferSizeEventSizeRatio = ratio; |
---|
242 | } |
---|
243 | #ifdef _usingMPI |
---|
244 | MPI_Allreduce(MPI_IN_PLACE, &minBufferSizeEventSizeRatio, 1, MPI_DOUBLE, MPI_MIN, intraComm); |
---|
245 | #elif _usingEP |
---|
246 | MPI_Allreduce(&minBufferSizeEventSizeRatio, &minBufferSizeEventSizeRatio, 1, MPI_DOUBLE, MPI_MIN, intraComm); |
---|
247 | #endif |
---|
248 | |
---|
249 | if (minBufferSizeEventSizeRatio < 1.0) |
---|
250 | ERROR("void CContextClient::setBufferSize(const std::map<int,StdSize>& mapSize, const std::map<int,StdSize>& maxEventSize)", |
---|
251 | << "The buffer sizes and the maximum events sizes are incoherent."); |
---|
252 | |
---|
253 | maxBufferedEvents = size_t(2 * minBufferSizeEventSizeRatio) // there is room for two local buffers on the server |
---|
254 | + size_t(minBufferSizeEventSizeRatio) // one local buffer can always be fully used |
---|
255 | + 1; // the other local buffer might contain only one event |
---|
256 | } |
---|
257 | |
---|
258 | /*! |
---|
259 | Get leading server in the group of connected server |
---|
260 | \return ranks of leading servers |
---|
261 | */ |
---|
262 | const std::list<int>& CContextClient::getRanksServerLeader(void) const |
---|
263 | { |
---|
264 | return ranksServerLeader; |
---|
265 | } |
---|
266 | |
---|
267 | /*! |
---|
268 | Check if client connects to leading server |
---|
269 | \return connected(true), not connected (false) |
---|
270 | */ |
---|
271 | bool CContextClient::isServerLeader(void) const |
---|
272 | { |
---|
273 | return !ranksServerLeader.empty(); |
---|
274 | } |
---|
275 | |
---|
276 | /*! |
---|
277 | * Check if the attached mode is used. |
---|
278 | * |
---|
279 | * \return true if and only if attached mode is used |
---|
280 | */ |
---|
281 | bool CContextClient::isAttachedModeEnabled() const |
---|
282 | { |
---|
283 | return (parentServer != 0); |
---|
284 | } |
---|
285 | |
---|
286 | /*! |
---|
287 | Finalize context client and do some reports |
---|
288 | */ |
---|
289 | void CContextClient::finalize(void) |
---|
290 | { |
---|
291 | map<int,CClientBuffer*>::iterator itBuff; |
---|
292 | bool stop = true; |
---|
293 | |
---|
294 | CEventClient event(CContext::GetType(), CContext::EVENT_ID_CONTEXT_FINALIZE); |
---|
295 | if (isServerLeader()) |
---|
296 | { |
---|
297 | CMessage msg; |
---|
298 | const std::list<int>& ranks = getRanksServerLeader(); |
---|
299 | for (std::list<int>::const_iterator itRank = ranks.begin(), itRankEnd = ranks.end(); itRank != itRankEnd; ++itRank) |
---|
300 | event.push(*itRank, 1, msg); |
---|
301 | sendEvent(event); |
---|
302 | } |
---|
303 | else sendEvent(event); |
---|
304 | |
---|
305 | CTimer::get("Blocking time").resume(); |
---|
306 | while (stop) |
---|
307 | { |
---|
308 | checkBuffers(); |
---|
309 | stop = false; |
---|
310 | for (itBuff = buffers.begin(); itBuff != buffers.end(); ++itBuff) stop |= itBuff->second->hasPendingRequest(); |
---|
311 | } |
---|
312 | CTimer::get("Blocking time").suspend(); |
---|
313 | |
---|
314 | std::map<int,StdSize>::const_iterator itbMap = mapBufferSize_.begin(), |
---|
315 | iteMap = mapBufferSize_.end(), itMap; |
---|
316 | StdSize totalBuf = 0; |
---|
317 | for (itMap = itbMap; itMap != iteMap; ++itMap) |
---|
318 | { |
---|
319 | report(10) << " Memory report : Context <" << context->getId() << "> : client side : memory used for buffer of each connection to server" << endl |
---|
320 | << " +) To server with rank " << itMap->first << " : " << itMap->second << " bytes " << endl; |
---|
321 | totalBuf += itMap->second; |
---|
322 | } |
---|
323 | report(0) << " Memory report : Context <" << context->getId() << "> : client side : total memory used for buffer " << totalBuf << " bytes" << endl; |
---|
324 | |
---|
325 | releaseBuffers(); |
---|
326 | } |
---|
327 | } |
---|