Debug Signal Trace: HW Signal Capture in Post Silicon for Debug, Coverage and...
summary
Tenstorrent describes a hardware Debug Signal Trace (DST) that captures selected microarchitecture signals over many cycles and writes compressed packets to on‑chip SRAM or off‑chip system memory, reusing trace funnel/trace sync and parts of the instruction trace encoder. DST timestamps packets to correlate with instruction trace, adds a packet loss bit for integrity, mirrors the RISC-V Trace Control Interface registers for easier adoption, and reports about 30% memory reduction from compression while enabling coverage and performance analysis beyond failure snapshots.
AI-written summary · about