Konata

Konata is an instruction pipeline visualizer for Onikiri2-Kanata/Gem5-O3PipeView formats.
ASPLOS 2018 learning gem5 tutorial presentation is here
The Onikiri2-Kanata format is described in here. It can represent a more detailed pipeline behavior than Gem5-O3PipeView.

demo

Installation

There are two ways to launch Konata. If you fail to launch a pre-built binary, please try the second way.

Extract an archive and launch an executable file (konata.exe or konata).
- Pre-built binaries are available from here.
Launch from this repository.
1. Install node.js from https://nodejs.org
2. Clone this repository.
3. Launch install.bat (Windows) or install.sh (Linux/MacOS).
4. Launch Konata from konata.vbs (Windows) or konata.sh (Linux/MacOS).

Usage

Basic

Generate a trace log from gem5 with the O3 CPU model

Execute gem5 with the following flags
This example is from http://www.m5sim.org/Visualization

$ ./build/ARM/gem5.opt 
    --debug-flags=O3PipeView 
    --debug-start=<first tick of interest> 
    --debug-file=trace.out 
    configs/example/se.py 
    --cpu-type=detailed 
    --caches -c <path to binary> 
    -m <last cycle of interest>

Load a generated "trace.out" to Konata
- from a menu in a window or using drag&drop
If you use O3CPUAll as well as O3PipeView as follows, Konata shows more detailed CPU log and visualizes dependency between instructions.
```
--debug-flags=O3PipeView,O3CPUAll
```

Keyboard

mouse wheel up, key up: scroll up
mouse wheel down, key down: scroll down
ctrl + mouse wheel up, key "+", ctrl+key up: zoom in
ctrl + mouse wheel down, key "-", ctrl+key down: zoom out
ctrl + f, F3, shift+F3: find a string
F1, ctrl+shift+p: open a command palette

Tips

If you miss pipelines in a right pane, you can move to pipelines by click "Adjust position" in a right-click menu.
You can visually compare two traces as follows:
1. Load two trace files
2. Right-click and select "Synchronized school" & "Transparent mode"
3. Right-click and select a color scheme
4. Move to another tab and adjust a position with the transparent mode

If you cannot launch Konata, try to install the following runtimes (or try to install the latest Google Chrome, because it uses the same runtimes).

sudo apt install 
    libgconf-2-4 
    libgtk-3-0 
    libxss1 
    libnss3 
    libasound2 
    libx11-xcb1 
    libcanberra-gtk3-module 
    libgbm-dev

In O3CPUAll mode, Konata associates each line in trace.out with each instruction by tracking [sn:<serial number>]. If you output custom log with the above serial information, Konata shows your custom log.

Development

Install dependent runtimes as follows or use Dockerfile included in a source tree

# Install node.js/npm
sudo apt install nodejs

# Install electron/electron-packager
# Since electron is huge, they are installed globally.
npm -g install electron
npm -g install electron-packager

# Run and build
make init   # Setup libraries
make        # Run Konata
make pack   # Build & pack Konata for Windows/Linux/Mac

License

This application is released under the 3-Clause BSD License, see LICENSE.md. This application bundles ELECTRON and many third-party packages in accordance with the licenses presented in THIRD-PARTY-LICENSES.md.

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Additional Information