Reflex

A fast, GPU-accelerated CPU pipeline trace visualizer built with GPUI (Zed’s rendering framework).

Reflex displays instruction execution timelines, queue occupancy, performance counters, and pipeline stage progression from CPU simulator traces.

Features

Pipeline visualization — GPU-rendered instruction timeline with smooth panning, zooming, and scrolling at 60fps
Performance counters — Sparklines, heatmap overview, and numeric display for 200+ hardware counters
Minimap — Full-trace overview with draggable range selection and pipeline position indicator
Multicursor — Place multiple cursors to measure cycle deltas between pipeline events, with undo/redo
Queue panels — Live retire, dispatch, and issue queue occupancy at the cursor position
Timeline overlay — Counter sparkline strip above the pipeline view for correlation
Tabbed interface — Open multiple traces side-by-side with independent viewport state
Konata & µScope formats — Native support for Konata text traces and µScope binary traces
macOS & Linux — Native builds for both platforms

git clone --recurse-submodules <repo-url>
cargo run --release -- path/to/trace.uscope

Or drag and drop trace files onto the window.