Throw an exception on error.

[loba.git] / process.cpp

diff --git a/process.cpp b/process.cpp
index 23c7abf028cd985ef66d92264a790fed9dab9fce..34ddbea2b713d3071ee24d83bda4ef7c3269c6e9 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -1,7 +1,6 @@
 #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 <stdexcept>
 #include <sstream>
 #include <xbt/log.h>


@@ -11,6 +10,7 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(proc);
 
 #include "misc.h"
 #include "options.h"
 
 #include "misc.h"
 #include "options.h"

+#include "tracing.h"

 
 #include "process.h"
 
 
 #include "process.h"
 


@@ -20,7 +20,7 @@ double process::total_load_exit = 0.0;
 
 process::process(int argc, char* argv[])
 {
 
 process::process(int argc, char* argv[])
 {

-    if (argc < 2 || !(std::istringstream(argv[1]) >> load))
+    if (argc < 2 || !(std::istringstream(argv[1]) >> real_load))

         throw std::invalid_argument("bad or missing initial load parameter");
 
     neigh.assign(argv + 2, argv + argc);
         throw std::invalid_argument("bad or missing initial load parameter");
 
     neigh.assign(argv + 2, argv + argc);


@@ -33,15 +33,19 @@ process::process(int argc, char* argv[])
         rev_neigh.insert(std::make_pair(host, 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_running += load;
-    total_load_init += load;
+    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;

 
     ctrl_close_pending = data_close_pending = neigh.size();
     close_received = false;
     finalizing = false;
 
 
     ctrl_close_pending = data_close_pending = neigh.size();
     close_received = false;
     finalizing = false;
 

+    comp_iter = lb_iter = 0;
+

     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;


@@ -54,78 +58,109 @@ process::process(int argc, char* argv[])
                        std::tr1::mem_fn(&neighbor::get_name));
         oss << neigh.back().get_name();
     }
                        std::tr1::mem_fn(&neighbor::get_name));
         oss << neigh.back().get_name();
     }

-    LOG1(logp, "Got %s.", oss.str().c_str());
+    XBT_LOG(logp, "Got %s.", oss.str().c_str());

     print_loads(false, logp);
 }
 
 process::~process()
 {
     print_loads(false, logp);
 }
 
 process::~process()
 {

-    total_load_exit += load;
+    total_load_exit += real_load;
+    if (opt::bookkeeping) {
+        XBT_INFO("Final load after %d:%d iterations: %g ; expected: %g",
+                 lb_iter, comp_iter, real_load, expected_load);
+    } else {
+        XBT_INFO("Final load after %d iterations: %g",
+                 lb_iter, real_load);
+        if (lb_iter != comp_iter)
+            XBT_WARN("lb_iter (%d) and comp_iter (%d) differ!",
+                     lb_iter, comp_iter);
+    }
+    XBT_VERB("Total computation for this process: %g", comp);

 }
 
 int process::run()
 {
 }
 
 int process::run()
 {

-    INFO1("Initial load: %g", load);
-    VERB0("Starting...");
-    comp_iter = lb_iter = 0;
+    double next_iter_after_date = 0.0;
+    XBT_INFO("Initial load: %g", real_load);
+    XBT_VERB("Starting...");

     while (true) {
     while (true) {

-        if (load > 0.0) {
-            ++comp_iter;
-            if (opt::log_rate && comp_iter % opt::log_rate == 0) {
+        if (get_load() > 0.0) {
+            double now = MSG_get_clock();
+            if (now < next_iter_after_date)
+                MSG_process_sleep(next_iter_after_date - now);
+            next_iter_after_date = MSG_get_clock() + opt::min_lb_iter_duration;
+
+            ++lb_iter;
+
+            if (opt::log_rate && lb_iter % opt::log_rate == 0) {

                 if (opt::bookkeeping)
                 if (opt::bookkeeping)

-                    INFO4("(%u:%u) current load: %g ; expected: %g",
-                          comp_iter, lb_iter, load, expected_load);
+                    XBT_INFO("(%u:%u) current load: %g ; expected: %g",
+                             lb_iter, comp_iter, real_load, expected_load);

                 else
                 else

-                    INFO2("(%u) current load: %g",
-                          comp_iter, load);
+                    XBT_INFO("(%u) current load: %g",
+                             lb_iter, real_load);

             }
 
             }
 

-            if (opt::bookkeeping)
-                expected_load -= load_balance(expected_load);
-            else
-                load -= load_balance(load);
+            load_balance();

 
             print_loads(true, xbt_log_priority_debug);
 
             print_loads(true, xbt_log_priority_debug);

+        }

 
 

-            send();
+        // send load information, and load (data) if any
+        send_all();
+        if (real_load > 0.0) {
+            ++comp_iter;

             compute();
             compute();

-
-        } else {
-            // send load information, and load when bookkeeping
-            send();

         }
 
         }
 

-        if (opt::comp_maxiter && comp_iter >= opt::comp_maxiter)
+        if (opt::lb_maxiter && lb_iter >= opt::lb_maxiter) {
+            XBT_VERB("Reached lb_maxiter: %d/%d", lb_iter, opt::lb_maxiter);

             break;
             break;

-        if (opt::lb_maxiter && lb_iter >= opt::lb_maxiter)
+        }
+        if (opt::comp_maxiter && comp_iter >= opt::comp_maxiter) {
+            XBT_VERB("Reached comp_maxiter: %d/%d", comp_iter, opt::comp_maxiter);

             break;
             break;

+        }
+        if (opt::time_limit && MSG_get_clock() >= opt::time_limit) {
+            XBT_VERB("Reached time limit: %g/%g", MSG_get_clock(), opt::time_limit);
+            break;
+        }

 
         // block on receiving unless there is something to compute or
         // to send
 
         // block on receiving unless there is something to compute or
         // to send

-        bool wait = (load == 0 &&
-                     ((opt::bookkeeping ? expected_load : load)
-                      == prev_load_broadcast));
-        receive(wait);
+        double timeout;
+        if (real_load != 0 || get_load() != prev_load_broadcast)
+            timeout = 0.0;
+        else if (opt::min_lb_iter_duration)
+            timeout = opt::min_lb_iter_duration;
+        else
+            timeout = 1.0;
+        receive(timeout);

 
         // one of our neighbor is finalizing
 
         // one of our neighbor is finalizing

-        if (opt::exit_on_close && close_received)
+        if (opt::exit_on_close && close_received) {
+            XBT_VERB("Close received");

             break;
             break;

+        }

 
         // have no load and cannot receive anything
 
         // have no load and cannot receive anything

-        if (load == 0.0 && !may_receive())
+        if (real_load == 0.0 && !may_receive()) {
+            XBT_VERB("I'm a poor lonesome process, and I have no load...");

             break;
             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) {
 
         // 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.");
+            XBT_VERB("No more load to balance in system.");

             break;
             break;

+        } else {
+            XBT_DEBUG("still %g load to balance, continuing...", total_load_running);

         }
         }

-

     }
     }

-    VERB0("Going to finalize...");
+    XBT_VERB("Going to finalize...");

     finalize();
 
     /* Open Questions :
     finalize();
 
     /* Open Questions :


@@ -134,49 +169,42 @@ int process::run()
      * - how to manage link failures ?
      */
 
      * - how to manage link failures ?
      */
 

-    VERB0("Done.");
-    INFO3("Final load after %d iteration%s: %g",
-          comp_iter, ESSE(comp_iter), load);
-    if (opt::bookkeeping)
-        INFO1("Expected load: %g", expected_load);
+    XBT_VERB("Done.");

     return 0;
 }
 
     return 0;
 }
 

-double process::sum_of_to_send() const
-{
-    using std::tr1::bind;
-    using std::tr1::placeholders::_1;
-    using std::tr1::placeholders::_2;
-
-    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*/)
+void process::load_balance()

 {
     if (lb_iter == 1)           // warn only once
 {
     if (lb_iter == 1)           // warn only once

-        WARN0("process::load_balance() is a no-op!");
-    return 0.0;
+        XBT_WARN("process::load_balance() is a no-op!");

 }
 
 void process::compute()
 {
 }
 
 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));
+    if (real_load > 0.0) {
+        double flops = opt::comp_cost(real_load);
+        m_task_t task = MSG_task_create("computation", flops, 0.0, NULL);
+        TRACE_msg_set_task_category(task, TRACE_CAT_COMP);
+        XBT_DEBUG("compute %g flop%s", flops, ESSE(flops));

         MSG_task_execute(task);
         MSG_task_execute(task);

+        comp += flops;

         MSG_task_destroy(task);
     } else {
         MSG_task_destroy(task);
     } else {

-        DEBUG0("nothing to compute !");
+        XBT_DEBUG("nothing to compute !");

     }
 }
 
     }
 }
 

+void process::send(neighbor& nb, double amount)
+{
+    set_load(get_load() - amount);
+    nb.set_to_send(nb.get_to_send() + amount);
+    nb.set_load(nb.get_load() + amount); // fixme: make this optional?
+}
+

 void process::send1_no_bookkeeping(neighbor& nb)
 {
 void process::send1_no_bookkeeping(neighbor& nb)
 {

-    if (load != prev_load_broadcast)
-        comm.send(nb.get_ctrl_mbox(), new message(message::INFO, load));
+    if (real_load != prev_load_broadcast)
+        comm.send(nb.get_ctrl_mbox(), new message(message::INFO, real_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));
     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));


@@ -200,20 +228,20 @@ void process::send1_bookkeeping(neighbor& nb)
     } else {
         new_debt = nb.get_debt();
     }
     } else {
         new_debt = nb.get_debt();
     }

-    if (load <= new_debt) {
-        load_to_send = load;
+    if (real_load <= new_debt) {
+        load_to_send = real_load;

         nb.set_debt(new_debt - load_to_send);
         nb.set_debt(new_debt - load_to_send);

-        load = 0.0;
+        real_load = 0.0;

     } else {
         load_to_send = new_debt;
         nb.set_debt(0.0);
     } else {
         load_to_send = new_debt;
         nb.set_debt(0.0);

-        load -= load_to_send;
+        real_load -= load_to_send;

     }
     if (load_to_send > 0.0)
         comm.send(nb.get_data_mbox(), new message(message::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()
+void process::send_all()

 {
     using std::tr1::bind;
     using std::tr1::placeholders::_1;
 {
     using std::tr1::bind;
     using std::tr1::placeholders::_1;


@@ -225,17 +253,18 @@ void process::send()
     } else {
         std::for_each(neigh.begin(), neigh.end(),
                       bind(&process::send1_no_bookkeeping, this, _1));
     } else {
         std::for_each(neigh.begin(), neigh.end(),
                       bind(&process::send1_no_bookkeeping, this, _1));

-        prev_load_broadcast = load;
+        prev_load_broadcast = real_load;

     }
     comm.flush(false);
 }
 
     }
     comm.flush(false);
 }
 

-void process::receive(bool wait)
+void process::receive(double timeout)

 {
     message* msg;
     m_host_t from;
 
 {
     message* msg;
     m_host_t from;
 

-    while (may_receive() && comm.recv(msg, from, wait)) {
+    XBT_DEBUG("%sblocking receive (%g)", "\0non-" + !timeout, timeout);
+    while (may_receive() && comm.recv(msg, from, timeout)) {

         switch (msg->get_type()) {
         case message::INFO: {
             neighbor* n = rev_neigh[from];
         switch (msg->get_type()) {
         case message::INFO: {
             neighbor* n = rev_neigh[from];


@@ -247,7 +276,7 @@ void process::receive(bool wait)
             break;
         case message::LOAD: {
             double ld = msg->get_amount();
             break;
         case message::LOAD: {
             double ld = msg->get_amount();

-            load += ld;
+            real_load += ld;

             if (finalizing)
                 total_load_running -= ld;
             break;
             if (finalizing)
                 total_load_running -= ld;
             break;


@@ -262,7 +291,7 @@ void process::receive(bool wait)
             break;
         }
         delete msg;
             break;
         }
         delete msg;

-        wait = false;           // only wait on first recv
+        timeout = 0.0;          // only wait on first recv

     }
     comm.flush(false);
 }
     }
     comm.flush(false);
 }


@@ -279,18 +308,17 @@ void process::finalize()
     using std::tr1::placeholders::_1;
 
     finalizing = true;
     using std::tr1::placeholders::_1;
 
     finalizing = true;

-    total_load_running -= load;
+    total_load_running -= real_load;

 
 

-    DEBUG2("send CLOSE to %lu neighbor%s",
-           (unsigned long )neigh.size(), ESSE(neigh.size()));
+    XBT_DEBUG("send CLOSE to %zu neighbor%s", neigh.size(), ESSE(neigh.size()));

     std::for_each(neigh.begin(), neigh.end(),
                   bind(&process::finalize1, this, _1));
 
     std::for_each(neigh.begin(), neigh.end(),
                   bind(&process::finalize1, this, _1));
 

-    DEBUG2("wait for CLOSE from %lu neighbor%s",
-           (unsigned long )neigh.size(), ESSE(neigh.size()));

     while (may_receive()) {
         comm.flush(false);
     while (may_receive()) {
         comm.flush(false);

-        receive(true);
+        XBT_DEBUG("waiting for %d CTRL and %d DATA CLOSE",
+                  ctrl_close_pending, data_close_pending);
+        receive(-1.0);

     }
 
     comm.flush(true);
     }
 
     comm.flush(true);


@@ -300,7 +328,7 @@ void process::finalize()
     if (_XBT_LOG_ISENABLEDV((*cat), logp)) {                            \
         using std::tr1::bind;                                           \
         using std::tr1::placeholders::_1;                               \
     if (_XBT_LOG_ISENABLEDV((*cat), logp)) {                            \
         using std::tr1::bind;                                           \
         using std::tr1::placeholders::_1;                               \

-        XCLOG0(cat, logp, "Neighbor loads:");                           \
+        XBT_XCLOG(cat, logp, "Neighbor loads:");                        \

         std::for_each(vec.begin(), vec.end(),                           \
                       bind(&neighbor::print, _1, verbose, logp, cat));  \
     } else ((void)0)
         std::for_each(vec.begin(), vec.end(),                           \
                       bind(&neighbor::print, _1, verbose, logp, cat));  \
     } else ((void)0)