X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/4f8948b8f67d26726a2e53c9afe1a110c037ce4b..ab12e5fdde759c1a4545159b2667d2cf3531591c:/process.cpp diff --git a/process.cpp b/process.cpp index e1232f2..a24d6eb 100644 --- a/process.cpp +++ b/process.cpp @@ -1,36 +1,50 @@ -#include "process.h" - #include #include #include +#include #include #include #include #include + +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(proc); + #include "misc.h" #include "options.h" -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu); +#include "process.h" + +double process::total_load_init = 0.0; +double process::total_load_exit = 0.0; process::process(int argc, char* argv[]) { if (argc < 2 || !(std::istringstream(argv[1]) >> load)) - throw std::invalid_argument("bad or missing initial load"); + throw std::invalid_argument("bad or missing initial load parameter"); neigh.assign(argv + 2, argv + argc); - std::for_each(neigh.begin(), neigh.end(), - std::tr1::bind(&process::insert_neighbor_in_map, - this, std::tr1::placeholders::_1)); + pneigh.reserve(neigh.size()); + for (unsigned i = 0 ; i < neigh.size() ; i++) { + neighbor* ptr = &neigh[i]; + m_host_t host = MSG_get_host_by_name(ptr->get_name()); + pneigh.push_back(ptr); + rev_neigh.insert(std::make_pair(host, ptr)); + } + prev_load_broadcast = -1; // force sending of load on first send() expected_load = load; + 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(); } - if (neigh.size() > 0) + close_received = false; + may_receive = (neigh.size() > 0); // the same as (ctrl_close_pending || + // data_close_pending) + if (may_receive) comm.listen(); e_xbt_log_priority_t logp = xbt_log_priority_verbose; @@ -46,21 +60,21 @@ process::process(int argc, char* argv[]) oss << neigh.back().get_name(); } LOG1(logp, "Got %s.", oss.str().c_str()); - print_loads(logp); + print_loads(true, logp); } process::~process() { + total_load_exit += load; } int process::run() { - bool one_more = true; - INFO1("Initial load: %g", load); VERB0("Starting..."); iter = 0; - while (one_more) { + bool one_more = true; + do { ++iter; if (opt::log_rate && iter % opt::log_rate == 0) { @@ -71,10 +85,7 @@ int process::run() INFO2("(%u) current load: %g", iter, load); } - - compute(); - - bool close_received = !receive(false); + print_loads(true, xbt_log_priority_debug); if (opt::bookkeeping) expected_load -= load_balance(expected_load); @@ -82,13 +93,32 @@ int process::run() load -= load_balance(load); send(); - comm.flush(false); + compute(); - if (opt::exit_on_close && close_received) - one_more = false; - if (opt::maxiter && iter >= opt::maxiter) - one_more = false; - } +// NDS for Need To Send +#define NDS ((opt::bookkeeping ? expected_load : load) != prev_load_broadcast) + do { + // General idea: block on receiving unless there is + // something to compute, or to send, or we must exit. + + // fixme: review this chunk, and remove this NDS macro! + + // FIXME: HAD A DEADLOCK HERE... + + bool recv_wait = (load == 0 && !NDS); + DEBUG1("CALL RECEIVE(%s)", recv_wait? "WAIT": "NO_WAIT"); + receive(recv_wait? WAIT: NO_WAIT); + + if (opt::exit_on_close && close_received) + one_more = false; + else if (opt::maxiter && iter >= opt::maxiter) + one_more = false; + + } while (one_more && may_receive && load == 0 && !NDS); + DEBUG0("RECEIVE LOOP ENDED"); +#undef NDS + + } while (one_more); VERB0("Going to finalize..."); finalize(); @@ -99,32 +129,46 @@ int process::run() */ VERB0("Done."); + INFO3("Final load after %d iteration%s: %g", iter, ESSE(iter), load); 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); + INFO1("Expected load: %g", expected_load); return 0; } -void process::compute() +double process::sum_of_to_send() const { - // 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); + 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*/) { + if (iter == 1) + WARN0("process::load_balance is a no-op!"); return 0.0; } +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)); + MSG_task_execute(task); + MSG_task_destroy(task); + } else { + DEBUG0("nothing to compute !"); + } +} + void process::send1_no_bookkeeping(neighbor& nb) { - comm.send(nb.get_ctrl_mbox(), new message(message::INFO, load)); + if (load != prev_load_broadcast) + 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)); @@ -134,7 +178,9 @@ void process::send1_no_bookkeeping(neighbor& nb) void process::send1_bookkeeping(neighbor& nb) { - comm.send(nb.get_ctrl_mbox(), new message(message::INFO, expected_load)); + if (expected_load != prev_load_broadcast) + 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(); @@ -161,28 +207,28 @@ void process::send1_bookkeeping(neighbor& nb) void process::send() { - // fixme: shall we send data at all iterations? + using namespace std::tr1; + using namespace std::tr1::placeholders; + if (opt::bookkeeping) { std::for_each(neigh.begin(), neigh.end(), - std::tr1::bind(&process::send1_bookkeeping, - this, std::tr1::placeholders::_1)); + bind(&process::send1_bookkeeping, this, _1)); + prev_load_broadcast = expected_load; } else { std::for_each(neigh.begin(), neigh.end(), - std::tr1::bind(&process::send1_no_bookkeeping, - this, std::tr1::placeholders::_1)); + bind(&process::send1_no_bookkeeping, this, _1)); + prev_load_broadcast = load; } } -// Returns false if a CLOSE message was received. -bool process::receive(bool wait_for_close) +void process::receive(recv_wait_mode wait) { - bool result = true; + // DEBUG1("go for receive(%s)", + // "NO_WAIT\0WAIT\0\0\0\0WAIT_FOR_CLOSE" + 8 * wait); message* msg; m_host_t 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)); + bool do_loop = may_receive; + while (do_loop && comm.recv(msg, from, wait)) { switch (msg->get_type()) { case message::INFO: { neighbor* n = rev_neigh[from]; @@ -198,19 +244,20 @@ bool process::receive(bool wait_for_close) 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; + // DEBUG1("ctrl_close_pending = %d", 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); - result = false; + // DEBUG1("data_close_pending = %d", data_close_pending); + close_received = true; break; } delete msg; + may_receive = (ctrl_close_pending || data_close_pending); + do_loop = (wait == WAIT_FOR_CLOSE) && may_receive; } - return result; } void process::finalize1(neighbor& nb) @@ -221,43 +268,46 @@ void process::finalize1(neighbor& nb) 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::for_each(neigh.begin(), neigh.end(), - std::tr1::bind(&process::finalize1, - this, std::tr1::placeholders::_1)); + bind(&process::finalize1, this, _1)); DEBUG2("wait for CLOSE from %d neighbor%s.", (int )neigh.size(), ESSE(neigh.size())); - receive(true); + receive(WAIT_FOR_CLOSE); comm.flush(true); } -void process::print_loads(e_xbt_log_priority_t logp) +#define print_loads_generic(vec, verbose, logp, cat) \ + if (_XBT_LOG_ISENABLEDV((*cat), logp)) { \ + using namespace std::tr1; \ + using namespace std::tr1::placeholders; \ + XCLOG0(cat, logp, "Neighbor loads:"); \ + std::for_each(vec.begin(), vec.end(), \ + bind(&neighbor::print, _1, verbose, logp, cat)); \ + } else ((void)0) + +void process::print_loads(bool verbose, + e_xbt_log_priority_t logp, + xbt_log_category_t cat) const { - 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::tr1::mem_fn(&neighbor::get_load)); - oss << neigh.back().get_load(); - } - LOG1(logp, "Neighbor loads: %s", oss.str().c_str()); + print_loads_generic(neigh, verbose, logp, cat); } -void process::insert_neighbor_in_map(neighbor& nb) +void process::print_loads_p(bool verbose, + e_xbt_log_priority_t logp, + xbt_log_category_t cat) const { - neighbor* nbp = &nb; - m_host_t host = MSG_get_host_by_name(nb.get_name()); - rev_neigh.insert(std::make_pair(host, nbp)); + print_loads_generic(pneigh, verbose, logp, cat); } +#undef print_loads_generic + // Local variables: // mode: c++ // End: