Initial commit

.gitignore

+# Compiled Object files
+*.slo
+*.lo
+*.o
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a

Bank.cpp

+//Copyright (c) 2015-2016, UT-Battelle, LLC. See LICENSE file in the top-level directory
+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+
+#include "Bank.h"
+
+Bank::Bank() {
+	// TODO Auto-generated constructor stub
+	initialized = false;
+	invalid = false;
+}
+
+Bank::~Bank() {
+	// TODO Auto-generated destructor stub
+}
+
+void Bank::PrintProperty() {
+	cout << "Bank Properties:" << endl;
+	FunctionUnit::PrintProperty();
+}
+
+Bank & Bank::operator=(const Bank &rhs) {
+	height = rhs.height;
+	width = rhs.width;
+	area = rhs.area;
+	readLatency = rhs.readLatency;
+	writeLatency = rhs.writeLatency;
+	readDynamicEnergy = rhs.readDynamicEnergy;
+	writeDynamicEnergy = rhs.writeDynamicEnergy;
+	resetLatency = rhs.resetLatency;
+	setLatency = rhs.setLatency;
+    refreshLatency = rhs.refreshLatency;
+	resetDynamicEnergy = rhs.resetDynamicEnergy;
+	setDynamicEnergy = rhs.setDynamicEnergy;
+    refreshDynamicEnergy = rhs.refreshDynamicEnergy;
+	cellReadEnergy = rhs.cellReadEnergy;
+	cellSetEnergy = rhs.cellSetEnergy;
+	cellResetEnergy = rhs.cellResetEnergy;
+	leakage = rhs.leakage;
+	initialized = rhs.initialized;
+	invalid = rhs.invalid;
+	numRowMat = rhs.numRowMat;
+	numColumnMat = rhs.numColumnMat;
+	capacity = rhs.capacity;
+	blockSize = rhs.blockSize;
+	associativity = rhs.associativity;
+	numRowPerSet = rhs.numRowPerSet;
+	numActiveMatPerRow = rhs.numActiveMatPerRow;
+	numActiveMatPerColumn = rhs.numActiveMatPerColumn;
+	muxSenseAmp = rhs.muxSenseAmp;
+	internalSenseAmp = rhs.internalSenseAmp;
+	muxOutputLev1 = rhs.muxOutputLev1;
+	muxOutputLev2 = rhs.muxOutputLev2;
+	areaOptimizationLevel = rhs.areaOptimizationLevel;
+	memoryType = rhs.memoryType;
+	numRowSubarray = rhs.numRowSubarray;
+	numColumnSubarray = rhs.numColumnSubarray;
+	numActiveSubarrayPerRow = rhs.numActiveSubarrayPerRow;
+	numActiveSubarrayPerColumn = rhs.numActiveSubarrayPerColumn;
+    stackedDieCount = rhs.stackedDieCount;
+    partitionGranularity = rhs.partitionGranularity;
+    routingReadLatency = rhs.routingReadLatency;
+    routingWriteLatency = rhs.routingWriteLatency;
+    routingResetLatency = rhs.routingResetLatency;
+    routingSetLatency = rhs.routingSetLatency;
+    routingRefreshLatency = rhs.routingRefreshLatency;
+    routingReadDynamicEnergy = rhs.routingReadDynamicEnergy;
+    routingWriteDynamicEnergy = rhs.routingWriteDynamicEnergy;
+    routingResetDynamicEnergy = rhs.routingResetDynamicEnergy;
+    routingSetDynamicEnergy = rhs.routingSetDynamicEnergy;
+    routingRefreshDynamicEnergy = rhs.routingRefreshDynamicEnergy;
+    routingLeakage = rhs.routingLeakage;
+	mat = rhs.mat;
+    tsvArray = rhs.tsvArray;
+	return *this;
+}

Bank.h

+//Copyright (c) 2015-2016, UT-Battelle, LLC. See LICENSE file in the top-level directory
+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+
+#ifndef BANK_H_
+#define BANK_H_
+
+#include "FunctionUnit.h"
+#include "Mat.h"
+#include "typedef.h"
+#include "TSV.h"
+
+class Bank: public FunctionUnit {
+public:
+	Bank();
+	virtual ~Bank();
+
+	/* Functions */
+	void PrintProperty();
+	virtual void Initialize(int _numRowMat, int _numColumnMat, long long _capacity,
+			long _blockSize, int _associativity, int _numRowPerSet, int _numActiveMatPerRow,
+			int _numActiveMatPerColumn, int _muxSenseAmp, bool _internalSenseAmp, int _muxOutputLev1, int _muxOutputLev2,
+			int _numRowSubarray, int _numColumnSubarray,
+			int _numActiveSubarrayPerRow, int _numActiveSubarrayPerColumn,
+			BufferDesignTarget _areaOptimizationLevel, MemoryType _memoryType,
+            int _stackedDieCount, int _paritionGranularity, int monolithicStackCount) = 0;
+	virtual void CalculateArea() = 0;
+	virtual void CalculateRC() = 0;
+	virtual void CalculateLatencyAndPower() = 0;
+	virtual Bank & operator=(const Bank &);
+
+	/* Properties */
+	bool initialized;	/* Initialization flag */
+	bool invalid;		/* Indicate that the current configuration is not valid, pass down to all the sub-components */
+	bool internalSenseAmp;
+	int numRowMat;		/* Number of mat rows in a bank */
+	int numColumnMat;	/* Number of mat columns in a bank */
+	long long capacity;		/* The capacity of this bank, Unit: bit */
+	long blockSize;		/* The basic block size in this bank, Unit: bit */
+	int associativity;	/* Associativity, for cache design only */
+	int numRowPerSet;		/* For cache design, the number of wordlines which a set is partitioned into */
+	int numActiveMatPerRow;	/* For different access types */
+	int numActiveMatPerColumn;	/* For different access types */
+	int muxSenseAmp;	/* How many bitlines connect to one sense amplifier */
+	int muxOutputLev1;	/* How many sense amplifiers connect to one output bit, level-1 */
+	int muxOutputLev2;	/* How many sense amplifiers connect to one output bit, level-2 */
+	int numRowSubarray;		/* Number of subarray rows in a mat */
+	int numColumnSubarray;	/* Number of subarray columns in a mat */
+	int numActiveSubarrayPerRow;	/* For different access types */
+	int numActiveSubarrayPerColumn;	/* For different access types */
+	BufferDesignTarget areaOptimizationLevel;
+	MemoryType memoryType;
+    int stackedDieCount;
+    int partitionGranularity;
+    double routingReadLatency;
+    double routingWriteLatency;
+    double routingResetLatency;
+    double routingSetLatency;
+    double routingRefreshLatency;
+    double routingReadDynamicEnergy; /* Non-TSV routing energy. */
+    double routingWriteDynamicEnergy; /* Non-TSV routing energy. */
+    double routingResetDynamicEnergy; /* Non-TSV routing energy. */
+    double routingSetDynamicEnergy; /* Non-TSV routing energy. */
+    double routingRefreshDynamicEnergy; /* Non-TSV routing energy. */
+    double routingLeakage;
+
+	Mat mat;
+    TSV tsvArray;
+};
+
+#endif /* BANK_H_ */

BankWithHtree.h

+//Copyright (c) 2015-2016, UT-Battelle, LLC. See LICENSE file in the top-level directory
+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+
+#ifndef BANKWITHHTREE_H_
+#define BANKWITHHTREE_H_
+
+#include "Bank.h"
+
+class BankWithHtree: public Bank {
+public:
+	BankWithHtree();
+	virtual ~BankWithHtree();
+	void Initialize(int _numRowMat, int _numColumnMat, long long _capacity,
+			long _blockSize, int _associativity, int _numRowPerSet, int _numActiveMatPerRow,
+			int _numActiveMatPerColumn, int _muxSenseAmp, bool _internalSenseAmp, int _muxOutputLev1, int _muxOutputLev2,
+			int _numRowSubarray, int _numColumnSubarray,
+			int _numActiveSubarrayPerRow, int _numActiveSubarrayPerColumn,
+			BufferDesignTarget _areaOptimizationLevel, MemoryType _memoryType,
+            int _stackedDieCount, int _partitionGranularity, int monolithicStackCount);
+	void CalculateArea();
+	void CalculateRC();
+	void CalculateLatencyAndPower();
+	BankWithHtree & operator=(const BankWithHtree &);
+
+	int numAddressBit;		/* Number of bank address bits */
+	int numDataDistributeBit;	/* Number of bank data bits (these bits will be distributed along with the address) */
+	int numDataBroadcastBit;	/* Number of bank data bits (these bits will be broadcasted at every node) */
+
+	int levelHorizontal;			/* The number of horizontal levels */
+	int levelVertical;				/* The number of vertical levels */
+	int * numHorizontalAddressBitToRoute;  /* The number of horizontal bits to route on level x */
+	int * numHorizontalDataDistributeBitToRoute;	/* The number of horizontal data-in bits to route on level x */
+	int * numHorizontalDataBroadcastBitToRoute;		/* The number of horizontal data-out bits to route on level x */
+	int * numHorizontalWire;        /* The number of horizontal wire tiers on level x */
+	int * numSumHorizontalWire;     /* The number of total horizontal wire groups on level x */
+	int * numActiveHorizontalWire;  /* The number of active horizontal wire groups on level x */
+	double * lengthHorizontalWire;	/* The length of horizontal wires on level x, Unit: m */
+	int * numVerticalAddressBitToRoute;	/* The number of vertical address bits to route on level x */
+	int * numVerticalDataDistributeBitToRoute;	/* The number of vertical data-in bits to route on level x */
+	int * numVerticalDataBroadcastBitToRoute;	/* The number of vertical data-out bits to route on level x */
+	int * numVerticalWire;          /* The number of vertical wire tiers on level x */
+	int * numSumVerticalWire;       /* The number of total vertical wire groups on level x */
+    int * numActiveVerticalWire;    /* The number of active vertical wire groups on level x */
+	double * lengthVerticalWire;	/* The length of vertical wires on level x, Unit: m */
+
+};
+
+#endif /* BANKWITHHTREE_H_ */

BankWithoutHtree.h

+//Copyright (c) 2015-2016, UT-Battelle, LLC. See LICENSE file in the top-level directory
+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+
+#ifndef BANKWITHOUTHTREE_H_
+#define BANKWITHOUTHTREE_H_
+
+#include "Bank.h"
+#include "Mat.h"
+#include "typedef.h"
+#include "Comparator.h"
+
+class BankWithoutHtree: public Bank {
+public:
+	BankWithoutHtree();
+	virtual ~BankWithoutHtree();
+
+	/* Functions */
+	void Initialize(int _numRowMat, int _numColumnMat, long long _capacity,
+			long _blockSize, int _associativity, int _numRowPerSet, int _numActiveMatPerRow,
+			int _numActiveMatPerColumn, int _muxSenseAmp, bool _internalSenseAmp, int _muxOutputLev1, int _muxOutputLev2,
+			int _numRowSubarray, int _numColumnSubarray,
+			int _numActiveSubarrayPerRow, int _numActiveSubarrayPerColumn,
+			BufferDesignTarget _areaOptimizationLevel, MemoryType _memoryType,
+            int _stackedDieCount, int _partitionGranularity, int monolithicStackCount);
+	void CalculateArea();
+	void CalculateRC();
+	void CalculateLatencyAndPower();
+	BankWithoutHtree & operator=(const BankWithoutHtree &);
+
+	int numAddressBit;		   /* Number of bank address bits */
+	int numWay;                  /* Number of way in a mat */
+	int numAddressBitRouteToMat;  /* Number of address bits routed to mat */
+	int numDataBitRouteToMat;   /* Number of data bits routed to mat */
+
+	Mux	globalBitlineMux;
+	SenseAmp globalSenseAmp;
+	Comparator globalComparator;
+};
+
+#endif /* BANKWITHOUTHTREE_H_ */

BasicDecoder.cpp

+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+#include "BasicDecoder.h"
+#include "formula.h"
+#include "global.h"
+
+BasicDecoder::BasicDecoder() {
+	// TODO Auto-generated constructor stub
+	initialized = false;
+}
+
+BasicDecoder::~BasicDecoder() {
+	// TODO Auto-generated destructor stub
+}
+
+void BasicDecoder::Initialize(int _numAddressBit, double _capLoad, double _resLoad){
+	/*if (initialized)
+			cout << "Warning: Already initialized!" << endl;*/
+	/* might be re-initialized by predecodeblock */
+	if (_numAddressBit == 1) {
+		numNandInput = 0;
+	}
+	else {
+		numNandInput = _numAddressBit;
+	}
+	capLoad = _capLoad;
+	resLoad = _resLoad;
+
+	if (numNandInput == 0) {
+		numNandGate = 0;
+		double logicEffortInv = 1;
+		double widthInvN = MIN_NMOS_SIZE * tech->featureSize;
+		double widthInvP = tech->pnSizeRatio * MIN_NMOS_SIZE * tech->featureSize;
+		double capInv = CalculateGateCap(widthInvN, *tech) + CalculateGateCap(widthInvP, *tech);
+		outputDriver.Initialize(logicEffortInv, capInv, capLoad, resLoad, true, latency_first, 0);  /* Always Latency First */
+	}
+	else{
+		double logicEffortNand;
+		double capNand;
+		if (numNandInput == 2) {	/* NAND2 */
+			numNandGate = 4;
+			widthNandN = 2 * MIN_NMOS_SIZE * tech->featureSize;
+			logicEffortNand = (2+tech->pnSizeRatio) / (1+tech->pnSizeRatio);
+		} else {					/* NAND3 */
+			numNandGate = 8;
+			widthNandN = 3 * MIN_NMOS_SIZE * tech->featureSize;
+			logicEffortNand = (3+tech->pnSizeRatio) / (1+tech->pnSizeRatio);
+		}
+		widthNandP = tech->pnSizeRatio * MIN_NMOS_SIZE * tech->featureSize;
+		capNand = CalculateGateCap(widthNandN, *tech) + CalculateGateCap(widthNandP, *tech);
+		outputDriver.Initialize(logicEffortNand, capNand, capLoad, resLoad, true, latency_first, 0);  /* Always Latency First */
+	}
+	initialized = true;
+}
+
+void BasicDecoder::CalculateArea() {
+	if (!initialized) {
+		cout << "[Basic Decoder] Error: Require initialization first!" << endl;
+	} else {
+		outputDriver.CalculateArea();
+		if (numNandInput == 0){
+			height = 2 * outputDriver.height;
+			width = outputDriver.width;
+		}
+		else {
+			double hNand, wNand;
+			CalculateGateArea(NAND, numNandInput, widthNandN, widthNandP, tech->featureSize*40, *tech, &hNand, &wNand);
+			height = MAX(hNand, outputDriver.height);
+			width = wNand + outputDriver.width;
+			height *= numNandGate;
+		}
+		area = height * width;
+	}
+}
+
+void BasicDecoder::CalculateRC() {
+	if (!initialized) {
+		cout << "[Basic Decoder] Error: Require initialization first!" << endl;
+	} else {
+		outputDriver.CalculateRC();
+		if (numNandInput > 0) {
+			CalculateGateCapacitance(NAND, numNandInput, widthNandN, widthNandP, tech->featureSize * MAX_TRANSISTOR_HEIGHT, *tech, &capNandInput, &capNandOutput);
+		}
+	}
+}
+
+void BasicDecoder::CalculateLatency(double _rampInput) {
+	if (!initialized) {
+		cout << "[Basic Decoder] Error: Require initialization first!" << endl;
+	} else {
+		rampInput = _rampInput;
+        if (numNandInput == 0) {
+        	outputDriver.CalculateLatency(rampInput);
+        	readLatency  = outputDriver.readLatency;
+        	writeLatency = readLatency;
+        } else {
+        	double resPullDown;
+        	double capLoad;
+        	double tr;	/* time constant */
+        	double gm;	/* transconductance */
+        	double beta;	/* for horowitz calculation */
+        	double rampInputForDriver;
+
+        	resPullDown = CalculateOnResistance(widthNandN, NMOS, inputParameter->temperature, *tech) * numNandInput;
+        	capLoad = capNandOutput + outputDriver.capInput[0];
+        	tr = resPullDown * capLoad;
+        	gm = CalculateTransconductance(widthNandN, NMOS, *tech);
+        	beta = 1 / (resPullDown * gm);
+        	readLatency = horowitz(tr, beta, rampInput, &rampInputForDriver);
+
+        	outputDriver.CalculateLatency(rampInputForDriver);
+        	readLatency += outputDriver.readLatency;
+        	writeLatency = readLatency;
+        }
+        rampOutput = outputDriver.rampOutput;
+	}
+}
+
+void BasicDecoder::CalculatePower() {
+	if (!initialized) {
+		cout << "[Basic Decoder] Error: Require initialization first!" << endl;
+	} else {
+		outputDriver.CalculatePower();
+		double capLoad;
+		if (numNandInput == 0) {
+			leakage = 2 * outputDriver.leakage;
+			capLoad = outputDriver.capInput[0] + outputDriver.capOutput[0];
+			readDynamicEnergy = capLoad * tech->vdd * tech->vdd;
+			readDynamicEnergy += outputDriver.readDynamicEnergy;
+			readDynamicEnergy *= 1;	/* only one row is activated each time */
+			writeDynamicEnergy = readDynamicEnergy;
+
+		} else {
+			/* Leakage power */
+			leakage = CalculateGateLeakage(NAND, numNandInput, widthNandN, widthNandP,
+					inputParameter->temperature, *tech) * tech->vdd;
+			leakage += outputDriver.leakage;
+			leakage *= numNandGate;
+			/* Dynamic energy */
+			capLoad = capNandOutput + outputDriver.capInput[0];
+			readDynamicEnergy = capLoad * tech->vdd * tech->vdd;
+			readDynamicEnergy += outputDriver.readDynamicEnergy;
+			readDynamicEnergy *= 1;	/* only one row is activated each time */
+			writeDynamicEnergy = readDynamicEnergy;
+		}
+	}
+}
+
+void BasicDecoder::PrintProperty() {
+	cout << numNandInput << " to " << numNandGate << " Decoder Properties:" << endl;
+	FunctionUnit::PrintProperty();
+}

BasicDecoder.h

+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+
+#ifndef BASICDECODER_H_
+#define BASICDECODER_H_
+
+#include "FunctionUnit.h"
+#include "OutputDriver.h"
+
+class BasicDecoder: public FunctionUnit {
+public:
+	BasicDecoder();
+	virtual ~BasicDecoder();
+
+	/* Functions */
+	void PrintProperty();
+	void Initialize(int _numAddressBit, double _capLoad, double _resLoad);
+	void CalculateArea();
+	void CalculateRC();
+	void CalculateLatency(double _rampInput);
+	void CalculatePower();
+
+	/* Properties */
+	bool initialized;	/* Initialization flag */
+	OutputDriver outputDriver;
+	double capLoad;		/* Load capacitance, Unit: F */
+	double resLoad;		/* Load resistance, Unit: ohm */
+	int numNandInput;	/* Type of NAND, NAND2 or NAND3 */
+	int numNandGate;    /* Number of NAND Gates */
+
+	double widthNandN, widthNandP;
+	double capNandInput, capNandOutput;
+	double rampInput, rampOutput;
+	/* TO-DO: Basic decoder so far does not take OptPriority input because the output driver is already quite fixed in this module */
+
+};
+
+#endif /* BASICDECODER_H_ */

CHANGELOG

+
+Version 1.0
+* Release of DESTINY
\ No newline at end of file

Comparator.cpp

+// This file contains code from NVSim, (c) 2012-2013,  Pennsylvania State University 
+//and Hewlett-Packard Company. See LICENSE_NVSim file in the top-level directory.
+//No part of DESTINY Project, including this file, may be copied,
+//modified, propagated, or distributed except according to the terms
+//contained in the LICENSE file.
+
+
+#include "Comparator.h"
+#include "global.h"
+#include "formula.h"
+#include <math.h>
+
+Comparator::Comparator() {
+	initialized = false;
+	capLoad = 0;
+	rampOutput = 1e40;
+	// TODO Auto-generated constructor stub
+
+}
+
+Comparator::~Comparator() {
+	// TODO Auto-generated destructor stub
+}
+
+void Comparator::Initialize(int _numTagBits, double _capLoad){
+	if (initialized)
+		cout << "[Comparator] Warning: Already initialized!" << endl;
+
+	numTagBits = _numTagBits / 4;  /* Assuming there are 4 quarter comparators. input tagbits is already a multiple of 4 */
+	capLoad = _capLoad;
+	widthNMOSInv[0] = 7.5 * tech->featureSize;
+	widthPMOSInv[0] = 12.5 * tech->featureSize;
+	widthNMOSInv[1] = 15 * tech->featureSize;
+	widthPMOSInv[1] = 25 * tech->featureSize;
+	widthNMOSInv[2] = 30 * tech->featureSize;
+	widthPMOSInv[2] = 50 * tech->featureSize;
+	widthNMOSInv[3] = 50 * tech->featureSize;
+	widthPMOSInv[3] = 100 * tech->featureSize;
+	widthNMOSComp = 12.5 * tech->featureSize;
+	widthPMOSComp = 37.5 * tech->featureSize;
+
+	initialized = true;
+}
+
+void Comparator::CalculateArea() {
+	if (!initialized) {
+		cout << "[Comparator] Error: Require initialization first!" << endl;
+	} else {
+		double totalHeight = 0;
+		double totalWidth = 0;
+		double h, w;
+		for (int i = 0; i < COMPARATOR_INV_CHAIN_LEN; i++) {
+			CalculateGateArea(INV, 1, widthNMOSInv[i], widthPMOSInv[i], tech->featureSize*40, *tech, &h, &w);
+			totalHeight = MAX(totalHeight, h);
+			totalWidth += w;
+		}
+		CalculateGateArea(NAND, 2, widthNMOSComp, 0, tech->featureSize*40, *tech, &h, &w);
+		totalHeight += h;
+		totalWidth = MAX(totalWidth, numTagBits * w);
+		height = totalHeight * 1; // 4 quarter comparators can have different placement, here assumes 1*4
+		width = totalWidth * 4;
+		area = height * width;
+	}
+}
+
+void Comparator::CalculateRC() {
+	if (!initialized) {
+		cout << "[Comparator] Error: Require initialization first!" << endl;
+	} else {
+		for (int i = 0; i < COMPARATOR_INV_CHAIN_LEN; i++) {
+			CalculateGateCapacitance(INV, 1, widthNMOSInv[i], widthPMOSInv[i], tech->featureSize * MAX_TRANSISTOR_HEIGHT, *tech, &(capInput[i]), &(capOutput[i]));
+		}
+		double capComp, capTemp;
+		CalculateGateCapacitance(NAND, 2, widthNMOSComp, 0, tech->featureSize*40, *tech, &capTemp, &capComp);
+		capBottom = capOutput[COMPARATOR_INV_CHAIN_LEN-1] + numTagBits * capComp;
+		capTop = numTagBits * capComp + CalculateDrainCap(widthPMOSComp, PMOS, tech->featureSize * MAX_TRANSISTOR_HEIGHT, *tech) + capLoad;
+		resBottom = CalculateOnResistance(widthNMOSInv[COMPARATOR_INV_CHAIN_LEN-1], NMOS, inputParameter->temperature, *tech);
+		resTop = 2 * CalculateOnResistance(widthNMOSComp, NMOS, inputParameter->temperature, *tech);
+	}
+}
+
+void Comparator::CalculateLatency(double _rampInput) {
+	if (!initialized) {
+		cout << "[Comparator] Error: Require initialization first!" << endl;
+	} else {
+		rampInput = _rampInput;
+		double resPullDown;
+		double capNode;
+		double tr;	/* time constant */
+		double gm;	/* transconductance */
+		double beta;	/* for horowitz calculation */
+		double temp;
+		readLatency = 0;
+		for (int i = 0; i < COMPARATOR_INV_CHAIN_LEN - 1; i++) {
+			resPullDown = CalculateOnResistance(widthNMOSInv[i], NMOS, inputParameter->temperature, *tech);
+			capNode = capOutput[i] + capInput[i+1];
+			tr = resPullDown * capNode;
+			gm = CalculateTransconductance(widthNMOSInv[i], NMOS, *tech);
+			beta = 1 / (resPullDown * gm);
+			readLatency += horowitz(tr, beta, rampInput, &temp);
+			rampInput = temp;	/* for next stage */
+		}
+		tr = resBottom * capBottom + (resBottom + resTop) * capTop;
+		readLatency += horowitz(tr, 0, rampInput, &rampOutput);
+		rampInput = _rampInput;
+		writeLatency = readLatency;
+	}
+}
+
+void Comparator::CalculatePower() {
+	if (!initialized) {
+		cout << "[Comparator] Error: Require initialization first!" << endl;
+	} else {
+		/* Leakage power */
+		leakage = 0;
+		for (int i = 0; i < COMPARATOR_INV_CHAIN_LEN; i++) {
+			leakage += CalculateGateLeakage(INV, 1, widthNMOSInv[i], widthPMOSInv[i], inputParameter->temperature, *tech)
+					* tech->vdd;
+		}
+		leakage += numTagBits * CalculateGateLeakage(NAND, 2, widthNMOSComp, 0, inputParameter->temperature, *tech)
+				* tech->vdd;
+		leakage *= 4;
+		/* Dynamic energy */
+		readDynamicEnergy = 0;
+		double capNode;
+		for (int i = 0; i < COMPARATOR_INV_CHAIN_LEN - 1; i++) {
+			capNode = capOutput[i] + capInput[i+1];
+			readDynamicEnergy += capNode * tech->vdd * tech->vdd;
+		}