1.4 KiB
1.4 KiB
The Beginnings of a high-performance, low memory footprint VCD Viewer in Rust for massive multi-GB waveforms
Features
- very fast
- loads 200MB of VCD waveform per second on an 8 core 2017 desktop CPU with NVMe storage
- consumes roughly between 10 - 50MB of memory per GB of waveform
- elegant/pretty UI
- can be easily ported to work in browser via webassembly
- allows high-performance custom Rust plugins to manipulate and generate new waveforms live
Running
Make sure you have a test vcd file to get you started. You can grab a large VCD file from here.
The first build of the program may take some time.
cargo run --release -- path/to/vcd/file
TODO
- Test positions with seeking
- vcd should be argument
- structure to store stream position against timestamp as string
- structure to store stream position against timestamp as BigInt
April 14
- store timestamps to struct
- Get file loading status
- Get all signal scopes
April 15
- Re-factor to support hooks in the initial file ingest
- Modularize
April 15
- Build tree per signal.
- Each signal also comes with a value change buffer to avoid frequent disk readouts.
VCD Spec Questions
- I'm pretty sure that only one statement per line is allowed.