Enforce integer initial load when integer transfers are activated.

[loba.git] / process.cpp

diff --git a/process.cpp b/process.cpp
index 491898d4fae320f56be3f20a2931e0d1fc98bda8..e6ae2abcdbb2573950534161d56c338f8d512b5a 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -1,4 +1,5 @@
 #include <algorithm>
 #include <algorithm>

+#include <cmath>

 #include <functional>
 #include <iterator>
 #include <numeric>
 #include <functional>
 #include <iterator>
 #include <numeric>


@@ -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");
 
     if (argc < 2 || !(std::istringstream(argv[1]) >> real_load))
         throw std::invalid_argument("bad or missing initial load parameter");
 

+    double iload = 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());
     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;
     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;
 
     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;
 {
     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",
     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;
         }
 
             ++lb_iter;
         }
 

+        ctrl_receive(0.0);
+

         mutex.acquire();
         if (!opt::bookkeeping)
             expected_load = real_load - get_sum_of_to_send();
         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);
         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__);
     }
 
     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);
                   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);
         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()) {
 
     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();
 
         // 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();
         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__);
     }
 
     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;
     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("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);
     }
         data_receive(-1.0);
     }

+    real_load += received_load;
+    received_load = 0.0;
+    total_load_running -= real_load;

     comm.data_flush(true);
 }
 
     comm.data_flush(true);
 }
 


@@ -297,39 +305,39 @@ void process::ctrl_send(neighbor& nb)
         debt_to_send = 0.0;
     }
     if (info_to_send != prev_load_broadcast || debt_to_send > 0.0) {
         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);
     }
 }
 
         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) {
 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) {
+        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);
             nb.set_debt(nb.get_debt() - load_to_send);

-            real_load -= load_to_send;
-        } else {
-            load_to_send = 0.0;
-        }

     } else {
     } 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;
     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;
         add_data_send_mesg(msg->get_size());
         comm.data_send(nb.get_data_mbox(), msg);
         load_to_send -= amount;


@@ -377,17 +385,15 @@ void process::data_receive(double timeout)
 void process::handle_message(message* msg, m_host_t from)
 {
     switch (msg->get_type()) {
 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;
     }
         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();
         double ld = msg->get_amount();

-        real_load += ld;
-        if (finalizing)
-            total_load_running -= ld;
+        received_load += ld;

         break;
     }
     case message::CTRL_CLOSE:
         break;
     }
     case message::CTRL_CLOSE: