X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/a561a2e124710e98e19bafea2b87f577779b68b5..6d4c5d60667c9b096a969e8a438c6fd4d8484cd1:/process.cpp?ds=inline diff --git a/process.cpp b/process.cpp index 491898d..0f7380c 100644 --- a/process.cpp +++ b/process.cpp @@ -1,4 +1,5 @@ #include +#include #include #include #include @@ -36,6 +37,13 @@ process::process(int argc, char* argv[]) if (argc < 2 || !(std::istringstream(argv[1]) >> real_load)) throw std::invalid_argument("bad or missing initial load parameter"); + double iload = std::trunc(real_load); + if (opt::integer_transfer && real_load != iload) { + XBT_WARN("Initial load %g is not an integer. Truncate it.", + real_load); + real_load = iload; + } + neigh.assign(argv + 2, argv + argc); pneigh.reserve(neigh.size()); @@ -50,6 +58,7 @@ process::process(int argc, char* argv[]) expected_load = real_load; total_load_running += real_load; total_load_init += real_load; + received_load = 0.0; ctrl_close_pending = data_close_pending = neigh.size(); close_received = false; @@ -80,6 +89,8 @@ process::~process() { delete lb_thread; total_load_exit += real_load; + xbt_assert(received_load == 0.0, + "received_load is %g, but should be 0.0 !", received_load); if (opt::log_rate < 0) return; XBT_INFO("Final load after %d:%d iterations: %g", @@ -124,6 +135,8 @@ void process::load_balance_loop() ++lb_iter; } + ctrl_receive(0.0); + mutex.acquire(); if (!opt::bookkeeping) expected_load = real_load - get_sum_of_to_send(); @@ -147,7 +160,6 @@ void process::load_balance_loop() mutex.release(); sleep_until_date(next_iter_after_date, opt::min_lb_iter_duration); - ctrl_receive(0.0); } XBT_VERB("Going to finalize for %s...", __func__); @@ -157,7 +169,7 @@ void process::load_balance_loop() std::bind(&process::ctrl_close, this, _1)); while (ctrl_close_pending) { comm.ctrl_flush(false); - XBT_DEBUG("waiting for %d CTRL CLOSE", ctrl_close_pending); + XBT_DEBUG("waiting for %d CTRL_CLOSE", ctrl_close_pending); ctrl_receive(-1.0); } comm.ctrl_flush(true); @@ -169,17 +181,14 @@ void process::compute_loop() double next_iter_after_date = MSG_get_clock() + opt::min_comp_iter_duration; while (still_running()) { - // receive - mutex.acquire(); - if (real_load > 0.0) - data_receive(0.0); - else - data_receive(opt::min_comp_iter_duration); - mutex.release(); + // receive (do not block if there is something to compute) + data_receive(real_load > 0.0 ? 0.0 : opt::min_comp_iter_duration); // send comm.data_flush(false); mutex.acquire(); + real_load += received_load; + received_load = 0.0; std::for_each(neigh.begin(), neigh.end(), std::bind(&process::data_send, this, _1)); mutex.release(); @@ -201,20 +210,19 @@ void process::compute_loop() } XBT_VERB("Going to finalize for %s...", __func__); - // last send, for not losing load scheduled to be sent - std::for_each(neigh.begin(), neigh.end(), - std::bind(&process::data_send, this, _1)); finalizing = true; - total_load_running -= real_load; XBT_DEBUG("send DATA_CLOSE to %zu neighbor%s", neigh.size(), ESSE(neigh.size())); std::for_each(neigh.begin(), neigh.end(), std::bind(&process::data_close, this, _1)); while (data_close_pending) { comm.data_flush(false); - XBT_DEBUG("waiting for %d DATA CLOSE", data_close_pending); + XBT_DEBUG("waiting for %d DATA_CLOSE", data_close_pending); data_receive(-1.0); } + real_load += received_load; + received_load = 0.0; + total_load_running -= real_load; comm.data_flush(true); } @@ -297,39 +305,44 @@ void process::ctrl_send(neighbor& nb) debt_to_send = 0.0; } if (info_to_send != prev_load_broadcast || debt_to_send > 0.0) { - message* msg = new message(message::INFO, info_to_send, debt_to_send); + message* msg = new message(message::CTRL, info_to_send, debt_to_send); add_ctrl_send_mesg(msg->get_size()); comm.ctrl_send(nb.get_ctrl_mbox(), msg); } } +double process::compute_load_to_send(double desired) +{ + if (opt::integer_transfer) + desired = std::floor(desired); + return desired >= opt::min_transfer_amount ? desired : 0.0; +} + void process::data_send(neighbor& nb) { double load_to_send; if (opt::bookkeeping) { - load_to_send = std::min(real_load, nb.get_debt()); - if (load_to_send >= opt::min_transfer_amount) { - nb.set_debt(nb.get_debt() - load_to_send); - real_load -= load_to_send; - } else { + double excess_load = real_load - expected_load; + if (excess_load > 0.0) { + load_to_send = compute_load_to_send(std::min(excess_load, + nb.get_debt())); + if (load_to_send > 0.0) + nb.set_debt(nb.get_debt() - load_to_send); + } else load_to_send = 0.0; - } } else { - load_to_send = nb.get_to_send(); - if (load_to_send >= opt::min_transfer_amount) { - nb.set_to_send(0.0); - real_load -= load_to_send; - } else { - load_to_send = 0.0; - } + load_to_send = compute_load_to_send(nb.get_to_send()); + if (load_to_send > 0.0) + nb.set_to_send(nb.get_to_send() - load_to_send); } + real_load -= load_to_send; while (load_to_send > 0.0) { double amount; if (opt::max_transfer_amount) amount = std::min(load_to_send, opt::max_transfer_amount); else amount = load_to_send; - message* msg = new message(message::LOAD, amount); + message* msg = new message(message::DATA, amount); add_data_send_mesg(msg->get_size()); comm.data_send(nb.get_data_mbox(), msg); load_to_send -= amount; @@ -377,17 +390,15 @@ void process::data_receive(double timeout) void process::handle_message(message* msg, m_host_t from) { switch (msg->get_type()) { - case message::INFO: { + case message::CTRL: { neighbor* n = rev_neigh[from]; n->set_load(msg->get_amount() + n->get_to_send()); expected_load += msg->get_credit(); // may be 0.0 if !opt::bookkeeping break; } - case message::LOAD: { + case message::DATA: { double ld = msg->get_amount(); - real_load += ld; - if (finalizing) - total_load_running -= ld; + received_load += ld; break; } case message::CTRL_CLOSE: