X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/de9d56dddba96f345ba109a8cdb0a2986cd59292..48b49c2ca6573b31386bd5afd4e68304c740e8ec:/process.cpp?ds=sidebyside diff --git a/process.cpp b/process.cpp index 470ad41..193c87b 100644 --- a/process.cpp +++ b/process.cpp @@ -1,6 +1,8 @@ #include -#include +#include +#include #include +#include #include #include #include @@ -20,7 +22,7 @@ double process::total_load_exit = 0.0; namespace { - void sleep_until_date(double& date, double duration = 0.0) + void sleep_until_date(double& date, double duration) { double sleep_duration = date - MSG_get_clock(); if (sleep_duration > 0.0) @@ -45,12 +47,11 @@ process::process(int argc, char* argv[]) rev_neigh.insert(std::make_pair(host, ptr)); } - comp = 0.0; - prev_load_broadcast = -1; // force sending of load on first send_all() 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; @@ -59,8 +60,7 @@ process::process(int argc, char* argv[]) comp_iter = lb_iter = 0; lb_thread = new_msg_thread("loba", - std::tr1::bind(&process::load_balance_loop, - this)); + std::bind(&process::load_balance_loop, this)); e_xbt_log_priority_t logp = xbt_log_priority_verbose; if (!LOG_ISENABLED(logp)) @@ -71,7 +71,7 @@ process::process(int argc, char* argv[]) oss << ESSE(neigh.size()) << ": "; std::transform(neigh.begin(), neigh.end() - 1, std::ostream_iterator(oss, ", "), - std::tr1::mem_fn(&neighbor::get_name)); + std::mem_fn(&neighbor::get_name)); oss << neigh.back().get_name(); } XBT_LOG(logp, "Got %s.", oss.str().c_str()); @@ -82,12 +82,14 @@ 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", lb_iter, comp_iter, real_load); XBT_VERB("Expected load was: %g", expected_load); - XBT_VERB("Total computation for this process: %g", comp); + XBT_VERB("Total computation for this process: %g", get_comp_amount()); } int process::run() @@ -113,8 +115,7 @@ int process::run() void process::load_balance_loop() { - using std::tr1::bind; - using std::tr1::placeholders::_1; + using std::placeholders::_1; double next_iter_after_date = MSG_get_clock() + opt::min_lb_iter_duration; while (still_running()) { @@ -127,35 +128,41 @@ 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(); + // nothing to do with opt::bookkeeping + if (opt::log_rate && lb_iter % opt::log_rate == 0) { XBT_INFO("(%u:%u) current load: %g", lb_iter, comp_iter, real_load); XBT_VERB("... expected load: %g", expected_load); } - if (get_load() > 0.0) + if (expected_load > 0.0) load_balance(); print_loads(true, xbt_log_priority_debug); // send + comm.ctrl_flush(false); std::for_each(neigh.begin(), neigh.end(), - bind(&process::ctrl_send, this, _1)); - prev_load_broadcast = get_load(); + std::bind(&process::ctrl_send, this, _1)); + prev_load_broadcast = expected_load; + mutex.release(); sleep_until_date(next_iter_after_date, opt::min_lb_iter_duration); - ctrl_receive(0.0); - - comm.ctrl_flush(false); } XBT_VERB("Going to finalize for %s...", __func__); XBT_DEBUG("send CTRL_CLOSE to %zu neighbor%s", neigh.size(), ESSE(neigh.size())); std::for_each(neigh.begin(), neigh.end(), - bind(&process::ctrl_close, this, _1)); + 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); @@ -163,26 +170,25 @@ void process::load_balance_loop() void process::compute_loop() { - using std::tr1::bind; - using std::tr1::placeholders::_1; + using std::placeholders::_1; double next_iter_after_date = MSG_get_clock() + opt::min_comp_iter_duration; while (still_running()) { - // receive - if (real_load > 0.0) - data_receive(0.0); - else - data_receive(opt::min_comp_iter_duration); + // 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(); if (real_load == 0.0) continue; - // send - std::for_each(neigh.begin(), neigh.end(), - bind(&process::data_send, this, _1)); - // compute ++comp_iter; double flops = opt::comp_cost(real_load); @@ -190,27 +196,26 @@ void process::compute_loop() TRACE_msg_set_task_category(task, TRACE_CAT_COMP); XBT_DEBUG("compute %g flop%s", flops, ESSE(flops)); MSG_task_execute(task); - comp += flops; + add_comp_amount(flops); MSG_task_destroy(task); sleep_until_date(next_iter_after_date, opt::min_comp_iter_duration); } 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(), - 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(), - bind(&process::data_close, this, _1)); + 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); } @@ -221,6 +226,10 @@ bool process::still_running() if (!last_status) { /* nop */ + } else if (opt::exit_request) { + XBT_VERB("Global exit requested"); + last_status = false; + } else if (opt::time_limit && MSG_get_clock() >= opt::time_limit) { XBT_VERB("Reached time limit: %g/%g", MSG_get_clock(), opt::time_limit); last_status = false; @@ -252,6 +261,16 @@ bool process::still_running() return last_status; } +double process::get_sum_of_to_send() const +{ + using std::placeholders::_1; + using std::placeholders::_2; + + return std::accumulate(neigh.begin(), neigh.end(), 0.0, + std::bind(std::plus(), _1, + std::bind(&neighbor::get_to_send, _2))); +} + void process::load_balance() { if (lb_iter == 1) // warn only once @@ -260,49 +279,62 @@ void process::load_balance() void process::send(neighbor& nb, double amount) { - set_load(get_load() - amount); + expected_load -= amount; nb.set_to_send(nb.get_to_send() + amount); nb.set_load(nb.get_load() + amount); } void process::ctrl_send(neighbor& nb) { - double info_to_send = get_load(); - if (info_to_send != prev_load_broadcast) - comm.ctrl_send(nb.get_ctrl_mbox(), - new message(message::INFO, info_to_send)); - if (opt::bookkeeping) { - double debt_to_send = nb.get_to_send(); + double info_to_send = expected_load; + double debt_to_send; + if (opt::bookkeeping) { // bookkeeping + debt_to_send = nb.get_to_send(); if (debt_to_send > 0.0) { nb.set_to_send(0.0); nb.set_debt(nb.get_debt() + debt_to_send); - comm.ctrl_send(nb.get_ctrl_mbox(), - new message(message::CREDIT, debt_to_send)); } + } else { // !bookkeeping + debt_to_send = 0.0; + } + if (info_to_send != prev_load_broadcast || debt_to_send > 0.0) { + 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) { - if (real_load <= nb.get_debt()) { - load_to_send = real_load; + load_to_send = compute_load_to_send(std::min(real_load, nb.get_debt())); + if (load_to_send > 0.0) nb.set_debt(nb.get_debt() - load_to_send); - real_load = 0.0; - } else { - load_to_send = nb.get_debt(); - nb.set_debt(0.0); - real_load -= load_to_send; - } } else { - load_to_send = nb.get_to_send(); - nb.set_to_send(0.0); - // do not update real_load here + 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::DATA, amount); + add_data_send_mesg(msg->get_size()); + comm.data_send(nb.get_data_mbox(), msg); + load_to_send -= amount; } - if (load_to_send > 0.0) - comm.data_send(nb.get_data_mbox(), - new message(message::LOAD, load_to_send)); } void process::ctrl_close(neighbor& nb) @@ -322,6 +354,8 @@ void process::ctrl_receive(double timeout) XBT_DEBUG("%sblocking receive on ctrl (%g)", "\0non-" + !timeout, timeout); while (ctrl_close_pending && comm.ctrl_recv(msg, from, timeout)) { + if (msg->get_type() != message::CTRL_CLOSE) + add_ctrl_recv_mesg(msg->get_size()); handle_message(msg, from); timeout = 0.0; } @@ -334,6 +368,8 @@ void process::data_receive(double timeout) XBT_DEBUG("%sblocking receive on data (%g)", "\0non-" + !timeout, timeout); while (data_close_pending && comm.data_recv(msg, from, timeout)) { + if (msg->get_type() != message::DATA_CLOSE) + add_data_recv_mesg(msg->get_size()); handle_message(msg, from); timeout = 0.0; } @@ -342,19 +378,15 @@ 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->set_load(msg->get_amount() + n->get_to_send()); + expected_load += msg->get_credit(); // may be 0.0 if !opt::bookkeeping break; } - case message::CREDIT: - expected_load += msg->get_amount(); - 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: @@ -371,12 +403,11 @@ void process::handle_message(message* msg, m_host_t from) #define print_loads_generic(vec, verbose, logp, cat) \ if (_XBT_LOG_ISENABLEDV((*cat), logp)) { \ - using std::tr1::bind; \ - using std::tr1::placeholders::_1; \ + using std::placeholders::_1; \ XBT_XCLOG(cat, logp, "My load: %g (real); %g (expected). " \ "Neighbor loads:", real_load, expected_load); \ std::for_each(vec.begin(), vec.end(), \ - bind(&neighbor::print, _1, verbose, logp, cat)); \ + std::bind(&neighbor::print, _1, verbose, logp, cat)); \ } else ((void)0) void process::print_loads(bool verbose,