X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/f4125505064e3ff346b31ab9e48f894672e5a7a7..f620be5869815a0dccd5b37089c2ee91399915e4:/process.cpp?ds=sidebyside diff --git a/process.cpp b/process.cpp index b30fab4..bc71b9d 100644 --- a/process.cpp +++ b/process.cpp @@ -1,5 +1,5 @@ #include -#include +#include #include #include #include @@ -15,19 +15,28 @@ process::process(int argc, char* argv[]) { if (argc < 2 || !(std::istringstream(argv[1]) >> load)) throw std::invalid_argument("bad or missing initial load"); + neigh.assign(argv + 2, argv + argc); expected_load = load; + + ctrl_close_pending = data_close_pending = neigh.size(); + if (neigh.size() == 1) { + comm.next_close_on_ctrl_is_last(); + comm.next_close_on_data_is_last(); + } + if (neigh.size() > 0) + comm.listen(); + e_xbt_log_priority_t logp = xbt_log_priority_verbose; if (!LOG_ISENABLED(logp)) return; - LOG1(logp, "My initial load is: %g", load); std::ostringstream oss; oss << neigh.size() << " neighbor"; if (!neigh.empty()) { - oss << (neigh.size() > 1 ? "s: " : ": "); + oss << ESSE(neigh.size()) << ": "; std::transform(neigh.begin(), neigh.end() - 1, std::ostream_iterator(oss, ", "), - std::mem_fun_ref(&neighbor::get_name)); + std::tr1::mem_fn(&neighbor::get_name)); oss << neigh.back().get_name(); } LOG1(logp, "Got %s.", oss.str().c_str()); @@ -36,27 +45,41 @@ process::process(int argc, char* argv[]) int process::run() { - INFO0("Coucou !"); - - int n = 100; - while (n--) { - if (load > 0) - compute(); - else - xbt_sleep(0.5); // fixme - receive(); + bool one_more = true; + unsigned iter = 0; + + INFO1("Initial load: %g", load); + VERB0("Starting..."); + while (one_more) { + bool close_received; + ++iter; + + if (opt::log_rate && iter % opt::log_rate == 0) { + if (opt::bookkeeping) + INFO3("(%u) current load: %g ; expected: %g", + iter, load, expected_load); + else + INFO2("(%u) current load: %g", + iter, load); + } + + compute(); + close_received = !receive(false); + + /* + * compute load balancing; + * send tasks to neighbors; + */ + + comm.flush(false); + + if (opt::exit_on_close && close_received) + one_more = false; + if (opt::maxiter && iter >= opt::maxiter) + one_more = false; } - // MSG_process_sleep(100.0); // xxx - /* xxx: - * while (there is something to do) { - * compute some task; - * get received tasks; - * compute load balancing; - * send tasks to neighbors; - * } - * finalize; - * wait for pending messages; - */ + VERB0("Going to finalize..."); + finalize(); /* Open Questions : * - definition of load on heterogeneous hosts ? @@ -64,19 +87,40 @@ int process::run() * - how to manage link failures ? */ - // xxx: shall we retrieve pending tasks? - + VERB0("Done."); + if (opt::bookkeeping) + INFO4("Final load after %d iteration%s: %g ; expected: %g", + iter, ESSE(iter), load, expected_load); + else + INFO3("Final load after %d iteration%s: %g", iter, ESSE(iter), load); return 0; } -void process::receive() +void process::compute() +{ + // fixme: shall we do something special when duration is 0 ? + double duration = opt::comp_cost(load); + m_task_t task = MSG_task_create("computation", duration, 0.0, NULL); + DEBUG2("compute %g flop%s.", duration, ESSE(duration)); + MSG_task_execute(task); + MSG_task_destroy(task); +} + + +// Returns false if a CLOSE message was received. +bool process::receive(bool wait_for_close) { + bool result = true; message* msg; m_host_t from; - while (comm.recv(msg, from)) { + while ((ctrl_close_pending || + data_close_pending) && comm.recv(msg, from, wait_for_close)) { + DEBUG2("received %s from %s", + msg->to_string().c_str(), MSG_host_get_name(from)); switch (msg->get_type()) { case message::INFO: // fixme: update neighbor + // need a map m_host_t -> neighbor& break; case message::CREDIT: expected_load += msg->get_amount(); @@ -84,36 +128,53 @@ void process::receive() case message::LOAD: load += msg->get_amount(); break; + case message::CTRL_CLOSE: + if (--ctrl_close_pending == 1) + comm.next_close_on_ctrl_is_last(); + DEBUG1("ctrl_close_pending = %d", ctrl_close_pending); + result = false; + break; + case message::DATA_CLOSE: + if (--data_close_pending == 1) + comm.next_close_on_data_is_last(); + DEBUG1("data_close_pending = %d", data_close_pending); + result = false; + break; } delete msg; } -} - -void process::compute() -{ - double duration = opt::comp_cost(load); - m_task_t task = MSG_task_create("computation", duration, 0.0, NULL); - DEBUG2("Compute %g flop%s.", duration, duration > 1 ? "s" : ""); - MSG_task_execute(task); - MSG_task_destroy(task); + return result; } void process::finalize() { - // fixme + DEBUG2("send CLOSE to %d neighbor%s.", + (int )neigh.size(), ESSE(neigh.size())); + std::vector::iterator n; + for (n = neigh.begin() ; n != neigh.end() ; ++n) { + comm.send(n->get_ctrl_mbox(), new message(message::CTRL_CLOSE, 0.0)); + comm.send(n->get_data_mbox(), new message(message::DATA_CLOSE, 0.0)); + } + + DEBUG2("wait for CLOSE from %d neighbor%s.", + (int )neigh.size(), ESSE(neigh.size())); + receive(true); + + comm.flush(true); } void process::print_loads(e_xbt_log_priority_t logp) { if (!LOG_ISENABLED(logp)) return; + std::ostringstream oss; if (neigh.empty()) { oss << "no neighbor!"; } else { std::transform(neigh.begin(), neigh.end() - 1, std::ostream_iterator(oss, ", "), - std::mem_fun_ref(&neighbor::get_load)); + std::tr1::mem_fn(&neighbor::get_load)); oss << neigh.back().get_load(); } LOG1(logp, "Neighbor loads: %s", oss.str().c_str());