This repository contains our implementation of the TAGE and L-TAGE branch predictors in ChampSim, along with the results of some experiments and our final presentation. This work was done as part of a course project in CS 305: Computer Architecture, Autumn 2021.

Team Amdahl's Vandals

Ankit Kumar Misra - 190050020
Aakriti - 190050002
Richeek Das - 190260036
Shabnam Sahay - 190050111
Sumit Jain - 190050119

1. ./ChampSim/branch/tage.bpred:
   This file contains an implementation of the TAGE branch predictor with 12 tagged components.
2. ./ChampSim/branch/ltage.bpred:
   This file contains an implementation of the L-TAGE branch predictor with 12 tagged components + 1 loop predictor.

1. Clone the repository.

$ git clone https://github.com/sudoRicheek/amdahls-vandals

2. Store traces to be used in ./traces/
3. Move into the ChampSim directory.

$ cd ChampSim/

4. Build the ChampSim simulator using the branch predictor to be used, replacing <predictor> with either tage or ltage, or any other predictor present in ChampSim.

$ ./build_champsim.sh <predictor> no no no no lru 1

5. Run the simulator on a trace of your choice.

$ ./run_champsim.sh <predictor>-no-no-no-no-lru-1core 10 10 <trace-filename>

The above steps will create a file in results_10M/, and will store the results of the simulation in it.

1. A case for (partially) tagged Geometric History Length Branch Prediction
2. The L-TAGE branch predictor
3. https://github.com/boubinjg/BranchPrediction
4. https://github.com/2Bor2C/tage
5. Championship Branch Prediction (CBP) 2016