From 2167649bfca861a954ae509c0afc8191bf58bcb7 Mon Sep 17 00:00:00 2001
From: Matthias Jung <jungma@eit.uni-kl.de>
Date: Wed, 4 May 2016 10:55:05 +0200
Subject: [PATCH] Created an online bandwith calculation This is just a
 preliminary implementation

---
 DRAMSys/simulator/src/simulation/Dram.h | 36 +++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/DRAMSys/simulator/src/simulation/Dram.h b/DRAMSys/simulator/src/simulation/Dram.h
index ed5152b0..c8f77a94 100644
--- a/DRAMSys/simulator/src/simulation/Dram.h
+++ b/DRAMSys/simulator/src/simulation/Dram.h
@@ -74,6 +74,11 @@ struct Dram : sc_module
     double totalEnergy = 0;
     double sumOfEnergyWindows = 0;
 
+    // Bandwith realted:
+    unsigned long long int numberOfTransactionsServed;
+    sc_time firstAccess;
+    sc_time lastAccess;
+
     // Error Model related:
     ErrorStorageMode ErrorStoreMode = Configuration::getInstance().ErrorStoreMode;
     std::vector<errorModel *> ememory;
@@ -175,6 +180,11 @@ struct Dram : sc_module
             SC_THREAD(powerWindow);
         }
 
+        // Bandwidth Calculation:
+        numberOfTransactionsServed = 0;
+        firstAccess = SC_ZERO_TIME;
+        lastAccess = SC_ZERO_TIME;
+
         printDebugMessage(string("ErrorStorageMode: ") + EnumToString(ErrorStoreMode));
 
         // For each bank in a channel a error Model is created:
@@ -213,9 +223,17 @@ struct Dram : sc_module
             assert(sumOfEnergyWindows == totalEnergy);
 
             // Print Final Total Power Values:
-            cout << name() << string("\tTotal Energy: \t") + to_string(totalEnergy) << endl;
-            cout << name() << string("\tAverage Power: \t") + to_string(DRAMPower->getPower().average_power) << endl;
+            cout << name() << string("\tTotal Energy: \t") + to_string(totalEnergy) << " pJ"<< endl;
+            cout << name() << string("\tAverage Power: \t") + to_string(DRAMPower->getPower().average_power) << " mW"<< endl;
         }
+
+        // Bandwidth:
+        sc_time activeTime = numberOfTransactionsServed * Configuration::getInstance().memSpec.BurstLength / Configuration::getInstance().memSpec.DataRate * Configuration::getInstance().memSpec.clk;
+        double bandwidth = (activeTime/(lastAccess-firstAccess)*100);
+
+        cout << name() << string("\tTotal Bandwidth: \t") + to_string(bandwidth) << " %" << endl;
+        cout << name() << string("\tTotal Bandwidth/IDLE: \tTODO %") << endl;
+
         // Clean up:
         for (auto e : ememory) {
             delete e;
@@ -253,6 +271,16 @@ struct Dram : sc_module
         // Recording time used by the traceAnalyzer
         sc_time recTime = sc_time_stamp() + delay;
 
+        if(numberOfTransactionsServed == 0)
+        {
+            firstAccess = sc_time_stamp();
+        }
+        else
+        {
+            lastAccess = sc_time_stamp();
+        }
+
+
         // These are terminating phases recorded by the DRAM. The execution
         // time of the related command must be taken into consideration.
         if (phase == END_PDNA || phase == END_PDNAB) {
@@ -298,6 +326,7 @@ struct Dram : sc_module
         else if (phase == BEGIN_WR)
         {
             if(powerAnalysis == true){DRAMPower->doCommand(MemCommand::WR, bank, cycle);}
+            numberOfTransactionsServed++;
 
             //save data:
             if (ErrorStoreMode == ErrorStorageMode::NoStorage)
@@ -316,6 +345,7 @@ struct Dram : sc_module
         }
         else if (phase == BEGIN_RD)
         {
+            numberOfTransactionsServed++;
             if(powerAnalysis == true){DRAMPower->doCommand(MemCommand::RD, bank, cycle);}
 
             // Load data:
@@ -339,6 +369,7 @@ struct Dram : sc_module
         }
         else if (phase == BEGIN_WRA)
         {
+            numberOfTransactionsServed++;
             if(powerAnalysis == true){DRAMPower->doCommand(MemCommand::WRA, bank, cycle);}
 
             //save data:
@@ -358,6 +389,7 @@ struct Dram : sc_module
         }
         else if (phase == BEGIN_RDA)
         {
+            numberOfTransactionsServed++;
             if(powerAnalysis == true){DRAMPower->doCommand(MemCommand::RDA, bank, cycle);}
 
             // Load data: