X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/dbc9221771e3158336126009aff945e86acca5da..51a92ed1069b6790ae4d3910f1c3b445e96963d3:/process.cpp diff --git a/process.cpp b/process.cpp index 306687f..ac9ab24 100644 --- a/process.cpp +++ b/process.cpp @@ -39,16 +39,8 @@ process::process(int argc, char* argv[]) total_load_init += 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(); - } close_received = false; - may_receive = (neigh.size() > 0); // the same as (ctrl_close_pending || - // data_close_pending) finalizing = false; - if (may_receive) - comm.listen(); e_xbt_log_priority_t logp = xbt_log_priority_verbose; if (!LOG_ISENABLED(logp)) @@ -73,19 +65,30 @@ process::~process() int process::run() { + double next_iter_after_date = 0.0; INFO1("Initial load: %g", load); VERB0("Starting..."); - iter = 0; + comp_iter = lb_iter = 0; while (true) { + if (opt::min_iter_duration) { + double now = MSG_get_clock(); + if (now < next_iter_after_date){ + double delay = next_iter_after_date - now; + DEBUG1("sleeping for %g s", delay); + MSG_process_sleep(next_iter_after_date - now); + } + next_iter_after_date = MSG_get_clock() + opt::min_iter_duration; + } + if (load > 0.0) { - ++iter; - if (opt::log_rate && iter % opt::log_rate == 0) { + ++comp_iter; + if (opt::log_rate && comp_iter % opt::log_rate == 0) { if (opt::bookkeeping) - INFO3("(%u) current load: %g ; expected: %g", - iter, load, expected_load); + INFO4("(%u:%u) current load: %g ; expected: %g", + comp_iter, lb_iter, load, expected_load); else INFO2("(%u) current load: %g", - iter, load); + comp_iter, load); } if (opt::bookkeeping) @@ -98,37 +101,51 @@ int process::run() send(); compute(); - if (opt::maxiter && iter >= opt::maxiter) - break; } else { // send load information, and load when bookkeeping send(); } + if (opt::comp_maxiter && comp_iter >= opt::comp_maxiter) { + VERB2("Reached comp_maxiter: %d/%d", comp_iter, opt::comp_maxiter); + break; + } + if (opt::lb_maxiter && lb_iter >= opt::lb_maxiter) { + VERB2("Reached lb_maxiter: %d/%d", lb_iter, opt::lb_maxiter); + break; + } + if (opt::time_limit && MSG_get_clock() >= opt::time_limit) { + VERB2("Reached time limit: %g/%g", MSG_get_clock(), opt::time_limit); + break; + } + // block on receiving unless there is something to compute or // to send - bool recv_wait = (load == 0 && - ((opt::bookkeeping ? expected_load : load) - == prev_load_broadcast)); - DEBUG1("CALL RECEIVE(%s)", recv_wait? "WAIT": "NO_WAIT"); - receive(recv_wait? WAIT: NO_WAIT); + bool wait = (load == 0 && + ((opt::bookkeeping ? expected_load : load) + == prev_load_broadcast)); + receive(wait); // one of our neighbor is finalizing - if (opt::exit_on_close && close_received) + if (opt::exit_on_close && close_received) { + VERB0("Close received"); break; + } // have no load and cannot receive anything - if (load == 0.0 && !may_receive) + if (load == 0.0 && !may_receive()) { + VERB0("I'm a poor lonesome process, and I have no load..."); break; + } // fixme: this check should be implemented with a distributed // algorithm, and not a shared global variable! + // fixme: should this chunk be moved before call to receive() ? if (100.0 * total_load_running / total_load_init <= opt::load_ratio_threshold) { - VERB0("No more load to balance in system, stopping."); + VERB0("No more load to balance in system."); break; } - } VERB0("Going to finalize..."); finalize(); @@ -140,9 +157,16 @@ int process::run() */ VERB0("Done."); - INFO3("Final load after %d iteration%s: %g", iter, ESSE(iter), load); - if (opt::bookkeeping) - INFO1("Expected load: %g", expected_load); + if (opt::bookkeeping) { + INFO4("Final load after %d:%d iterations: %g ; expected: %g", + comp_iter, lb_iter, load, expected_load); + } else { + INFO2("Final load after %d iterations: %g", + comp_iter, load); + if (comp_iter != lb_iter) + WARN2("comp_iter (%d) and lb_iter (%d) differ!", + comp_iter, lb_iter); + } return 0; } @@ -159,8 +183,8 @@ double process::sum_of_to_send() const double process::load_balance(double /*my_load*/) { - if (iter == 1) - WARN0("process::load_balance is a no-op!"); + if (lb_iter == 1) // warn only once + WARN0("process::load_balance() is a no-op!"); return 0.0; } @@ -169,7 +193,7 @@ void process::compute() if (load > 0.0) { 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)); + DEBUG2("compute %g flop%s", duration, ESSE(duration)); MSG_task_execute(task); MSG_task_destroy(task); } else { @@ -231,16 +255,15 @@ void process::send() bind(&process::send1_no_bookkeeping, this, _1)); prev_load_broadcast = load; } + comm.flush(false); } -void process::receive(recv_wait_mode wait) +void process::receive(bool wait) { - // DEBUG1("go for receive(%s)", - // "NO_WAIT\0WAIT\0\0\0\0WAIT_FOR_CLOSE" + 8 * wait); message* msg; m_host_t from; - bool do_wait = (wait != NO_WAIT); - while (may_receive && comm.recv(msg, from, do_wait)) { + + while (may_receive() && comm.recv(msg, from, wait)) { switch (msg->get_type()) { case message::INFO: { neighbor* n = rev_neigh[from]; @@ -258,22 +281,18 @@ void process::receive(recv_wait_mode wait) 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); + ctrl_close_pending--; close_received = true; 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); + data_close_pending--; close_received = true; break; } delete msg; - may_receive = (ctrl_close_pending || data_close_pending); - do_wait = (wait == WAIT_FOR_CLOSE); + wait = false; // only wait on first recv } + comm.flush(false); } void process::finalize1(neighbor& nb) @@ -290,14 +309,17 @@ void process::finalize() finalizing = true; total_load_running -= load; - DEBUG2("send CLOSE to %d neighbor%s.", - (int )neigh.size(), ESSE(neigh.size())); + DEBUG2("send CLOSE to %lu neighbor%s", + (unsigned long )neigh.size(), ESSE(neigh.size())); 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())); - receive(WAIT_FOR_CLOSE); + DEBUG2("wait for CLOSE from %lu neighbor%s", + (unsigned long )neigh.size(), ESSE(neigh.size())); + while (may_receive()) { + comm.flush(false); + receive(true); + } comm.flush(true); }