代写program编程、代做C++语言程序

日期：2024-05-19 07:53

Computer Architecture

2024 Spring

Final Project Part 1Overview

Tutorial

● Gem5 Introduction

● Environment Setup

Projects

● Part 1 (5%)

○ Write C++ program to analyze the specification of L1 data cache.

● Part 2 (5%)

○ Given the hardware specifications, try to get the best performance for more

complicated program.

2Gem5 Introduction

3What is Gem5 simulator ?

● A modular platform for computer-system architecture research.

● Can help investigate impact of microarchitechture to applications.

● For example, the cache size, cpu and memory architecture could all be

configured.

./build/X86/gem5.opt ./configs/example/fs.py

--num-cpu=4 \

--cpu-clock=2GHz \

--caches --l2cache \

--cpu-type=TimeSimpleCPU \

--mem-size=4GB \

--mem-type=DDR4_2400_8x8

4What information can we get and for what?

Timing, memory bandwidth, miss rate, details of executed instructions, etc.

● Timing ● DCache miss rate

● Executed instructions

You can find this information in stats.txt

5Environment Setup

6Steps of Environment Setup

TA has already built the Gem5 environment in a Docker Image, all you need to do is

install the Docker and download the image.

Steps:

1. Linux installation

2. Docker installation

3. Download Gem5 image

4. Run Gem5 simulation

(If your computer already has Docker, you can skip step 1 & step 2)

7● Since Docker needs to run in a Linux environment, if your OS is a Windows, we

strongly recommend you install WSL2.

(1) Open the command prompt (cmd) and type

(2) Restart your computer

(3) Re-open the cmd, type wsl to enter the Linux environment

Step1. Linux installation

$ wsl --install -d Ubuntu

8Step2. Docker installation

1. Open your Linux environment

2. Use the following commands to install Docker.

3. Add user name to the docker group.

$ curl -fsSL https://get.docker.com -o get-docker.sh

$ sudo sh get-docker.sh

$ sudo gpasswd -a $USER docker

$ newgrp docker

9Step2. Docker installation (option)

● If you want to use the Docker GUI, you can follow the installation steps on this

website: https://docs.docker.com/desktop/install/windows-install/

10Step3. Download Gem5 image

● Use the following command to download TA’s Gem5 image

(it may takes a few minutes)

● Create and start a container. Only do this the first time.

$ docker pull yenzu/ca_final:2024

$ docker run -it --name 2024CA_FP yenzu/ca_final:2024

container_name image_name

11● Go to home directory and use ./run_system<1|2> <CPP_FILE> to run the

simulation.

● If there is no error in your cpp file, you will get the following text.

You can then go to stats.txt file to find more simulation information.

Step4. Run Gem5 simulation

$ cd /home

$ ./run_system1 example.cpp

12● Exit container → use Ctrl+D or type exit

● Restart the container

● Copy file from container to local (type it outside the container)

● Copy file from local to container (type it outside the container)

Docker commands

$ docker start 2024CA_FP

$ docker exec -it 2024CA_FP bash

docker cp 2024CA_FP:<PATH_IN_CONTAINER> <FILE_NAME>

docker cp <FILE_NAME> 2024CA_FP:<PATH_IN_CONTAINER>

13Project 1

14In project1, we have created two simple

computer systems, both of which have the same

hardware architecture, differing only in the

specifications of their L1 data caches.

Your task is to find out the specifications of these

two L1 data caches by writing C++ programs. We

will show you more detailed information on the

next page.

Description

15System Specifications

● ISA: X86

● CPU: TimingSimpleCPU (no pipeline, CPU stalls on every memory request)

● L1 Cache

* I cache and D cache use the same policy and block size

● Memory size: 8192MB

16

I cache

size

I cache

associativity

D cache

size

D cache

associativity Policy Block size

system1 16KB 8

system2 16KB 8Grading Policy

Report

● Complete the table on the previous page. (40%)

○ 8 blanks, each blank 5%.

● For each specification, please make sure your report contain the following

information. (60%)

a. [5%] Show the screenshot of your code and explain your design concept. (i.e. what you

want to measure through this code)

b. [10%] Show your measurement result in a chart format. Please clearly indicate what

information you extracted from the stats.txt file and what you observed from the chart.

○ 4 specs, each spec 15%.

17Submission

● Please submit your report and code on E3 before 23:59 on May 23, 2024.

● Late submission is not allowed.

● Plagiarism is forbidden, otherwise you will get 0 point!!!

18

● Format

○ Report name: FP1_team<ID>_report.pdf

○ Code: please put all your code in a folder

named FP1_team<ID>_code and compress

it into a zip file with same name.● What program should I write?

○ We do not limit the content of your program, but if you have no direction, you can refer

to p.35-42 of this slide.

● How to write program in Docker?

○ You can write your program on your local computer and copy it into the Docker

container using docker cp command (see p.13). Or you can use Vim to write the

program directly in Docker (see Appendix).

● How to execute my program?

○ Please follow the steps in p.12

FAQ

19Appendix – Vim

20What is Vim?

21

● Vim is a highly configurable text editor built to make creating and

changing any kind of text very efficient.

● There are many commands in Vim. We will only teach you the

most basic ones, while more advanced commands can be found

on this website.1. Type vim <FILE_NAME> in terminal to open Vim editor.

2. Press button i to enter insert mode

How to use Vim?

22

$ vim test.cpp3. Modify files with keyboard (use ↑↓←→ button to shift the cursor)

4. Press button esc to return to command mode

5. Type :wq , and then press enter to return to terminal

How to use Vim?

23