tracing TODO marks

[simgrid.git] / src / surf / plugins / host_energy.cpp

diff --git a/src/surf/plugins/host_energy.cpp b/src/surf/plugins/host_energy.cpp
index a84acc7..17fd032 100644 (file)
--- a/src/surf/plugins/host_energy.cpp
+++ b/src/surf/plugins/host_energy.cpp
@@ -90,6 +90,13 @@ private:
   simgrid::s4u::Host* host = nullptr;
   std::vector<PowerRange>
       power_range_watts_list; /*< List of (min_power,max_power) pairs corresponding to each cpu pstate */
+
+  /* We need to keep track of what pstate has been used, as we will sometimes
+   * be notified only *after* a pstate has been used (but we need to update the energy consumption
+   * with the old pstate!)
+   */
+  int pstate = 0;
+
 public:
   double watts_off    = 0.0; /*< Consumption when the machine is turned off (shutdown) */
   double total_energy = 0.0; /*< Total energy consumed by the host */
@@ -104,12 +111,13 @@ void HostEnergy::update()
   double start_time  = this->last_updated;
   double finish_time = surf_get_clock();
   double cpu_load;
-  if (host->pimpl_cpu->getPstateSpeedCurrent() <= 0)
+  double current_speed = host->speed();
+  if (current_speed <= 0)
     // Some users declare a pstate of speed 0 flops (e.g., to model boot time).
     // We consider that the machine is then fully loaded. That's arbitrary but it avoids a NaN
     cpu_load = 1;
   else
-    cpu_load = lmm_constraint_get_usage(host->pimpl_cpu->constraint()) / host->pimpl_cpu->getPstateSpeedCurrent();
+    cpu_load = lmm_constraint_get_usage(host->pimpl_cpu->constraint()) / current_speed;
 
   /** Divide by the number of cores here **/
   cpu_load /= host->pimpl_cpu->coreCount();
@@ -135,9 +143,11 @@ void HostEnergy::update()
 
   double energy_this_step = instantaneous_consumption * (finish_time - start_time);
 
+  //TODO Trace: Trace energy_this_step from start_time to finish_time in host->name()
+
   this->total_energy = previous_energy + energy_this_step;
   this->last_updated = finish_time;
-
+  this->pstate       = host->pstate();
   XBT_DEBUG(
       "[update_energy of %s] period=[%.2f-%.2f]; current power peak=%.0E flop/s; consumption change: %.2f J -> %.2f J",
       host->cname(), start_time, finish_time, host->pimpl_cpu->speed_.peak, previous_energy, energy_this_step);
@@ -177,7 +187,7 @@ double HostEnergy::getCurrentWattsValue(double cpu_load)
 
   /* min_power corresponds to the power consumed when only one core is active */
   /* max_power is the power consumed at 100% cpu load       */
-  auto range           = power_range_watts_list.at(host->pstate());
+  auto range           = power_range_watts_list.at(this->pstate);
   double current_power = 0;
   double min_power     = 0;
   double max_power     = 0;
@@ -267,6 +277,9 @@ static void onCreation(simgrid::s4u::Host& host)
 {
   if (dynamic_cast<simgrid::s4u::VirtualMachine*>(&host)) // Ignore virtual machines
     return;
+
+  //TODO Trace: set to zero the energy variable associated to host->name()
+
   host.extension_set(new HostEnergy(&host));
 }
 
@@ -274,24 +287,24 @@ static void onActionStateChange(simgrid::surf::CpuAction* action, simgrid::surf:
 {
   for (simgrid::surf::Cpu* cpu : action->cpus()) {
     simgrid::s4u::Host* host = cpu->getHost();
-    if (host == nullptr)
-      continue;
+    if (host != nullptr) {
 
-    // If it's a VM, take the corresponding PM
-    simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(host);
-    if (vm) // If it's a VM, take the corresponding PM
-      host = vm->pimpl_vm_->getPm();
+      // If it's a VM, take the corresponding PM
+      simgrid::s4u::VirtualMachine* vm = dynamic_cast<simgrid::s4u::VirtualMachine*>(host);
+      if (vm) // If it's a VM, take the corresponding PM
+        host = vm->pimpl_vm_->getPm();
 
-    // Get the host_energy extension for the relevant host
-    HostEnergy* host_energy = host->extension<HostEnergy>();
+      // Get the host_energy extension for the relevant host
+      HostEnergy* host_energy = host->extension<HostEnergy>();
 
-    if (host_energy->last_updated < surf_get_clock())
-      host_energy->update();
+      if (host_energy->last_updated < surf_get_clock())
+        host_energy->update();
+    }
   }
 }
 
-/* This callback is fired either when the host change its state (on/off) or its speed
- * (because the user changed the pstate, or because of external trace events) */
+/* This callback is fired either when the host changes its state (on/off) ("onStateChange") or its speed
+ * (because the user changed the pstate, or because of external trace events) ("onSpeedChange") */
 static void onHostChange(simgrid::s4u::Host& host)
 {
   if (dynamic_cast<simgrid::s4u::VirtualMachine*>(&host)) // Ignore virtual machines
@@ -299,8 +312,7 @@ static void onHostChange(simgrid::s4u::Host& host)
 
   HostEnergy* host_energy = host.extension<HostEnergy>();
 
-  if (host_energy->last_updated < surf_get_clock())
-    host_energy->update();
+  host_energy->update();
 }
 
 static void onHostDestruction(simgrid::s4u::Host& host)