FireSim

Working in Firesim to analyse memory behavior of various SoCs. This repository summarizes all key updates. To view my working repository go to chipyard-a

Prefetching/Dependencies

• Chipyard 1.11.0 (this version of chipyard supports the most recent version of Firesim, but does not support full Gemmini functionalities)
• Follow all initial setup for Chipyard 1.11.0
• Follow the set up guide (excluding the repo setup) for Firesim 1.18.0 for U280 FPGA
• This project specifically uses Xilinx U280 FPGA

Below, I will describe what each directory means.

Firesim

This folder contains the build config files and results of bitstreams I used that no not come with the Chipyard 1.11.0 repository.

You will find these three files/directorys:

• config_build_recipes.yaml -> the details related to each build
• config_hwdb.yaml -> references the location of the build, which is used when launching a Firesim simulation
• results-build -> completed builds as described in config_build_recipes.yaml, referenced by config_hwdb.yaml

You should unzip and add the contents of this results-build folder in chipyard/sims/firesim/deploy/results-build in your chipyard repository. You should add the contents of the two config.yaml files underneath the existing config files in located in chipyard/sims/firesim/deploy.

generators

This is a folder with all of the hardware configurations added to the existing Chipyard repository, for the purpose of this project.

You will find these three files/directorys:

• gemmini -> all modified gemmini config files. Append the contents of these files to their corresponding files in chipyard/generators/gemmini/src/main/scala/gemmini of your chipyard repository
• chipyard -> all modified chipyard SoC config files. Append the contents to their corresponding files in chipyard/generators/chipyard/src/main/scala/config
• firechip -> all modified firechip config files. This bridges between your chipyard SoC and Firesim. Append the contents to their corresponding files in chipyard/generators/firechip/src/main/scala

Workloads

This is a folder with all workloads used in this projects. Put the contents of the workloads directory in chipyard/software.

You will notice these folders:

• tutorial -> uses Gemmini's imagenet/resnet50 programs (based off of Firesim workshop at ASPLOS 2023)
  • key findings located in 'workload results'/tutorial(resnet50)
• custom-workloads -> two simple matrix multiplication programs from this repository
  • key findings located in 'workload results'/matmul

In each folder, there are these files:

• marshal-configs -> config files FireMarshal uses to generate workloads
• build.sh -> bash script to build software workloads used in Firesim
• run.sh -> bash script to automate building and installation of workloads into Firesim
• If there are additional files, there will also be a README to explain them

Workload Results

This folder contains the most important results after running a Firesim workload. In your chipyard directory, these results can be found in chipyard/sims/firesim/deploy/results-workload.

You will find these files/directorys:

• README -> a file that summarizes key findings
• tutorial(resnet50) -> results from running the workloads in the workloads/tutorial folder
• matmul -> results from running the workloads in the workloads/customworkloads folder The folders inside each directies refer to the builds. The results of each workload can be found in their corresponding folders.