X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/5279f43fc9be71815091e79c76d5bc04c8c88421..325b135f0ee33c6c0242a14e2f58a54fb571b032:/process.cpp?ds=inline diff --git a/process.cpp b/process.cpp index d8ec500..9988def 100644 --- a/process.cpp +++ b/process.cpp @@ -1,22 +1,35 @@ +#include "process.h" + #include #include #include +#include #include #include #include #include #include "misc.h" #include "options.h" -#include "process.h" -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu); +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(proc); process::process(int argc, char* argv[]) { + using namespace std::tr1; + using namespace std::tr1::placeholders; + if (argc < 2 || !(std::istringstream(argv[1]) >> load)) throw std::invalid_argument("bad or missing initial load"); neigh.assign(argv + 2, argv + argc); + + std::for_each(neigh.begin(), neigh.end(), + bind(&process::insert_neighbor_in_map, this, _1)); + + pneigh.resize(neigh.size()); + std::transform(neigh.begin(), neigh.end(), pneigh.begin(), + misc::address()); + expected_load = load; ctrl_close_pending = data_close_pending = neigh.size(); @@ -30,45 +43,54 @@ process::process(int argc, char* argv[]) 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 << ESSE(neigh.size()) << ": "; std::transform(neigh.begin(), neigh.end() - 1, std::ostream_iterator(oss, ", "), - std::tr1::mem_fn(&neighbor::get_name)); + mem_fn(&neighbor::get_name)); oss << neigh.back().get_name(); } LOG1(logp, "Got %s.", oss.str().c_str()); print_loads(logp); } +process::~process() +{ +} + int process::run() { bool one_more = true; - unsigned iter = 0; + + INFO1("Initial load: %g", load); VERB0("Starting..."); + // first send to inform neighbors about our load + send(); + iter = 0; while (one_more) { - bool close_received; + ++iter; - if (opt::bookkeeping) - INFO3("(%u) current load: %g ; expected: %g", - iter, load, expected_load); - else - INFO2("(%u) current load: %g", - iter, load); + 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; - */ + bool close_received = !receive(false); - comm.flush(false); - ++iter; + if (opt::bookkeeping) + expected_load -= load_balance(expected_load); + else + load -= load_balance(load); + + send(); if (opt::exit_on_close && close_received) one_more = false; @@ -85,19 +107,94 @@ int process::run() */ 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; } +double process::sum_of_to_send() const +{ + using namespace std::tr1; + using namespace std::tr1::placeholders; + + return std::accumulate(neigh.begin(), neigh.end(), 0.0, + bind(std::plus(), + _1, bind(&neighbor::get_to_send, _2))); +} + +double process::load_balance(double /*my_load*/) +{ + return 0.0; +} + 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); + if (duration > 0) { + 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); + } else { + xbt_sleep(42); + // xbt_thread_yield(); + } } +void process::send1_no_bookkeeping(neighbor& nb) +{ + comm.send(nb.get_ctrl_mbox(), new message(message::INFO, load)); + double load_to_send = nb.get_to_send(); + if (load_to_send > 0.0) { + comm.send(nb.get_data_mbox(), new message(message::LOAD, load_to_send)); + nb.set_to_send(0.0); + } +} + +void process::send1_bookkeeping(neighbor& nb) +{ + comm.send(nb.get_ctrl_mbox(), new message(message::INFO, expected_load)); + double load_to_send; + double new_debt; + double debt_to_send = nb.get_to_send(); + if (debt_to_send > 0.0) { + comm.send(nb.get_ctrl_mbox(), + new message(message::CREDIT, debt_to_send)); + nb.set_to_send(0.0); + new_debt = nb.get_debt() + debt_to_send; + } else { + new_debt = nb.get_debt(); + } + if (load <= new_debt) { + load_to_send = load; + nb.set_debt(new_debt - load_to_send); + load = 0.0; + } else { + load_to_send = new_debt; + nb.set_debt(0.0); + load -= load_to_send; + } + if (load_to_send > 0.0) + comm.send(nb.get_data_mbox(), new message(message::LOAD, load_to_send)); +} + +void process::send() +{ + using namespace std::tr1; + using namespace std::tr1::placeholders; + + // fixme: shall we send data at all iterations? + if (opt::bookkeeping) + std::for_each(neigh.begin(), neigh.end(), + bind(&process::send1_bookkeeping, this, _1)); + else + std::for_each(neigh.begin(), neigh.end(), + bind(&process::send1_no_bookkeeping, this, _1)); +} // Returns false if a CLOSE message was received. bool process::receive(bool wait_for_close) @@ -110,10 +207,11 @@ bool process::receive(bool 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& + case message::INFO: { + neighbor* n = rev_neigh[from]; + n->set_load(msg->get_amount()); break; + } case message::CREDIT: expected_load += msg->get_amount(); break; @@ -138,15 +236,21 @@ bool process::receive(bool wait_for_close) return result; } +void process::finalize1(neighbor& nb) +{ + comm.send(nb.get_ctrl_mbox(), new message(message::CTRL_CLOSE, 0.0)); + comm.send(nb.get_data_mbox(), new message(message::DATA_CLOSE, 0.0)); +} + void process::finalize() { + using namespace std::tr1; + using namespace std::tr1::placeholders; + 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)); - } + std::for_each(neigh.begin(), neigh.end(), + bind(&process::finalize1, this, _1)); DEBUG2("wait for CLOSE from %d neighbor%s.", (int )neigh.size(), ESSE(neigh.size())); @@ -172,6 +276,13 @@ void process::print_loads(e_xbt_log_priority_t logp) LOG1(logp, "Neighbor loads: %s", oss.str().c_str()); } +void process::insert_neighbor_in_map(neighbor& nb) +{ + neighbor* nbp = &nb; + m_host_t host = MSG_get_host_by_name(nb.get_name()); + rev_neigh.insert(std::make_pair(host, nbp)); +} + // Local variables: // mode: c++ // End: