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[loba.git] / process.cpp

diff --git a/process.cpp b/process.cpp
index d8ec50036a4d6d9d2e93568bc944604bba118375..9988defd083267ef8c197feb47465a8d59a97ee8 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -1,22 +1,35 @@
+#include "process.h"
+

 #include <algorithm>
 #include <tr1/functional>
 #include <iterator>
 #include <algorithm>
 #include <tr1/functional>
 #include <iterator>

+#include <numeric>

 #include <stdexcept>
 #include <sstream>
 #include <xbt/log.h>
 #include <xbt/time.h>
 #include "misc.h"
 #include "options.h"
 #include <stdexcept>
 #include <sstream>
 #include <xbt/log.h>
 #include <xbt/time.h>
 #include "misc.h"
 #include "options.h"

-#include "process.h"

 
 

-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(proc);

 
 process::process(int argc, char* argv[])
 {
 
 process::process(int argc, char* argv[])
 {

+    using namespace std::tr1;
+    using namespace std::tr1::placeholders;
+

     if (argc < 2 || !(std::istringstream(argv[1]) >> load))
         throw std::invalid_argument("bad or missing initial load");
 
     neigh.assign(argv + 2, argv + argc);
     if (argc < 2 || !(std::istringstream(argv[1]) >> load))
         throw std::invalid_argument("bad or missing initial load");
 
     neigh.assign(argv + 2, argv + argc);

+
+    std::for_each(neigh.begin(), neigh.end(),
+                  bind(&process::insert_neighbor_in_map, this, _1));
+
+    pneigh.resize(neigh.size());
+    std::transform(neigh.begin(), neigh.end(), pneigh.begin(),
+                   misc::address<neighbor>());
+

     expected_load = load;
 
     ctrl_close_pending = data_close_pending = neigh.size();
     expected_load = load;
 
     ctrl_close_pending = data_close_pending = neigh.size();


@@ -30,45 +43,54 @@ process::process(int argc, char* argv[])
     e_xbt_log_priority_t logp = xbt_log_priority_verbose;
     if (!LOG_ISENABLED(logp))
         return;
     e_xbt_log_priority_t logp = xbt_log_priority_verbose;
     if (!LOG_ISENABLED(logp))
         return;

-    LOG1(logp, "My initial load is: %g", load);

     std::ostringstream oss;
     oss << neigh.size() << " neighbor";
     if (!neigh.empty()) {
         oss << ESSE(neigh.size()) << ": ";
         std::transform(neigh.begin(), neigh.end() - 1,
                        std::ostream_iterator<const char*>(oss, ", "),
     std::ostringstream oss;
     oss << neigh.size() << " neighbor";
     if (!neigh.empty()) {
         oss << ESSE(neigh.size()) << ": ";
         std::transform(neigh.begin(), neigh.end() - 1,
                        std::ostream_iterator<const char*>(oss, ", "),

-                       std::tr1::mem_fn(&neighbor::get_name));
+                       mem_fn(&neighbor::get_name));

         oss << neigh.back().get_name();
     }
     LOG1(logp, "Got %s.", oss.str().c_str());
     print_loads(logp);
 }
 
         oss << neigh.back().get_name();
     }
     LOG1(logp, "Got %s.", oss.str().c_str());
     print_loads(logp);
 }
 

+process::~process()
+{
+}
+

 int process::run()
 {
     bool one_more = true;
 int process::run()
 {
     bool one_more = true;

-    unsigned iter = 0;
+
+    INFO1("Initial load: %g", load);

     VERB0("Starting...");
     VERB0("Starting...");

+    // first send to inform neighbors about our load
+    send();
+    iter = 0;

     while (one_more) {
     while (one_more) {

-        bool close_received;
+        ++iter;

 
 

-        if (opt::bookkeeping)
-            INFO3("(%u) current load: %g ; expected: %g",
-                  iter, load, expected_load);
-        else
-            INFO2("(%u) current load: %g",
-                  iter, load);
+        if (opt::log_rate && iter % opt::log_rate == 0) {
+            if (opt::bookkeeping)
+                INFO3("(%u) current load: %g ; expected: %g",
+                      iter, load, expected_load);
+            else
+                INFO2("(%u) current load: %g",
+                      iter, load);
+        }

 
         compute();
 
         compute();

-        close_received = !receive(false);

 
 

-        /*
-         *    compute load balancing;
-         *    send tasks to neighbors;
-         */
+        bool close_received = !receive(false);

 
 

-        comm.flush(false);
-        ++iter;
+        if (opt::bookkeeping)
+            expected_load -= load_balance(expected_load);
+        else
+            load -= load_balance(load);
+
+        send();

 
         if (opt::exit_on_close && close_received)
             one_more = false;
 
         if (opt::exit_on_close && close_received)
             one_more = false;


@@ -85,19 +107,94 @@ int process::run()
      */
 
     VERB0("Done.");
      */
 
     VERB0("Done.");

+    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);

     return 0;
 }
 
     return 0;
 }
 

+double process::sum_of_to_send() const
+{
+    using namespace std::tr1;
+    using namespace std::tr1::placeholders;
+
+    return std::accumulate(neigh.begin(), neigh.end(), 0.0,
+                           bind(std::plus<double>(),
+                                _1, bind(&neighbor::get_to_send, _2)));
+}
+
+double process::load_balance(double /*my_load*/)
+{
+    return 0.0;
+}
+

 void process::compute()
 {
     // fixme: shall we do something special when duration is 0 ?
     double duration = opt::comp_cost(load);
 void process::compute()
 {
     // 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);
+    if (duration > 0)  {
+        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 {
+        xbt_sleep(42);
+        //        xbt_thread_yield();
+    }

 }
 
 }
 

+void process::send1_no_bookkeeping(neighbor& nb)
+{
+    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));
+        nb.set_to_send(0.0);
+    }
+}
+
+void process::send1_bookkeeping(neighbor& nb)
+{
+    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();
+    if (debt_to_send > 0.0) {
+        comm.send(nb.get_ctrl_mbox(),
+                  new message(message::CREDIT, debt_to_send));
+        nb.set_to_send(0.0);
+        new_debt = nb.get_debt() + debt_to_send;
+    } else {
+        new_debt = nb.get_debt();
+    }
+    if (load <= new_debt) {
+        load_to_send = load;
+        nb.set_debt(new_debt - load_to_send);
+        load = 0.0;
+    } else {
+        load_to_send = new_debt;
+        nb.set_debt(0.0);
+        load -= load_to_send;
+    }
+    if (load_to_send > 0.0)
+        comm.send(nb.get_data_mbox(), new message(message::LOAD, load_to_send));
+}
+
+void process::send()
+{
+    using namespace std::tr1;
+    using namespace std::tr1::placeholders;
+
+    // fixme: shall we send data at all iterations?
+    if (opt::bookkeeping)
+        std::for_each(neigh.begin(), neigh.end(),
+                      bind(&process::send1_bookkeeping, this, _1));
+    else
+        std::for_each(neigh.begin(), neigh.end(),
+                      bind(&process::send1_no_bookkeeping, this, _1));
+}

 
 // Returns false if a CLOSE message was received. 
 bool process::receive(bool wait_for_close)
 
 // Returns false if a CLOSE message was received. 
 bool process::receive(bool wait_for_close)


@@ -110,10 +207,11 @@ bool process::receive(bool wait_for_close)
         DEBUG2("received %s from %s",
                msg->to_string().c_str(), MSG_host_get_name(from));
         switch (msg->get_type()) {
         DEBUG2("received %s from %s",
                msg->to_string().c_str(), MSG_host_get_name(from));
         switch (msg->get_type()) {

-        case message::INFO:
-            // fixme: update neighbor
-            // need a map m_host_t -> neighbor&
+        case message::INFO: {
+            neighbor* n = rev_neigh[from];
+            n->set_load(msg->get_amount());

             break;
             break;

+        }

         case message::CREDIT:
             expected_load += msg->get_amount();
             break;
         case message::CREDIT:
             expected_load += msg->get_amount();
             break;


@@ -138,15 +236,21 @@ bool process::receive(bool wait_for_close)
     return result;
 }
 
     return result;
 }
 

+void process::finalize1(neighbor& nb)
+{
+    comm.send(nb.get_ctrl_mbox(), new message(message::CTRL_CLOSE, 0.0));
+    comm.send(nb.get_data_mbox(), new message(message::DATA_CLOSE, 0.0));    
+}
+

 void process::finalize()
 {
 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()));
     DEBUG2("send CLOSE to %d neighbor%s.",
            (int )neigh.size(), ESSE(neigh.size()));

-    std::vector<neighbor>::iterator n;
-    for (n = neigh.begin() ; n != neigh.end() ; ++n) {
-        comm.send(n->get_ctrl_mbox(), new message(message::CTRL_CLOSE, 0.0));
-        comm.send(n->get_data_mbox(), new message(message::DATA_CLOSE, 0.0));
-    }
+    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()));
 
     DEBUG2("wait for CLOSE from %d neighbor%s.",
            (int )neigh.size(), ESSE(neigh.size()));


@@ -172,6 +276,13 @@ void process::print_loads(e_xbt_log_priority_t logp)
     LOG1(logp, "Neighbor loads: %s", oss.str().c_str());
 }
 
     LOG1(logp, "Neighbor loads: %s", oss.str().c_str());
 }
 

+void process::insert_neighbor_in_map(neighbor& nb)
+{
+    neighbor* nbp = &nb;
+    m_host_t host = MSG_get_host_by_name(nb.get_name());
+    rev_neigh.insert(std::make_pair(host, nbp));
+}
+

 // Local variables:
 // mode: c++
 // End:
 // Local variables:
 // mode: c++
 // End: