The-OpenROAD-Project/bazel-orfs

repair-timing-grt

Investigate OpenROAD global-route repair_timing correctly — the grt "grind"/timeout, hold- and setup-buffer insertion. Covers why a skip-repair (fast) grt measures nothing about repair, why repair_timing must run inside global_route.tcl on the pre-GR ODB, how…

원문 언어: 영어

cache-miss

Ask whether a target is a remote cache hit on this machine without building it (a capture kills every miss as it appears and lists the actions behind it as not reached, minutes on a laptop), and find out why it is not when another machine built it: a few…

원문 언어: 영어

dogfooding

The standing rules learned building XiangShan with bazel-orfs, for any large design: fix the tools and never the design (no multicycle or false-path exceptions, no added RTL registers); hard stops where a problem is made; finish the macros before the parent;…

원문 언어: 영어

macro-constraints

How to constrain a hardened macro or block: only register-to-register paths can fail timing closure, boundary paths are optimization targets written with set_max_delay, and set_input_delay/set_output_delay cannot be written at all without assuming a clock…

원문 언어: 영어

macro-selection

Choose which modules of a large design to harden as macros by their interfaces in space (pins per micron of perimeter, from the RTL) and in time (registered, shallow boundary crossings, from a hierarchical synthesis), then plan the parent floorplan those…

원문 언어: 영어

prefer-slang

Set SYNTH_HDL_FRONTEND=slang for synthesis unless the design's Verilog cannot go through slang; yosys's own Verilog frontend is effectively deprecated for SystemVerilog and its generate-block expansion can take minutes on a netlist that synthesises in…

원문 언어: 영어

odb-debug

Ask a placed or routed design questions through a persistent OpenROAD session on a flow stage's ODB (the odb-debug daemon and its MCP tools): where the macros are, which cells sit inside a macro footprint or in a sliver between macros, what check_placement…

원문 언어: 영어

no-paint-drying

Settle open questions with the human at small scale and fast turnaround (seconds to minutes: synthetic design, checkpoint, single stage, unit test) before any long run, then declare the long run and how many hours it needs no input, and run it unattended with…

원문 언어: 영어

github-deprecations

Route around GitHub features that are sunset or deprecated when using gh, the GitHub API or GitHub Actions: the known list (Projects classic breaking gh pr edit, removed GraphQL fields, preview media types, legacy runners and Node 16 actions, set-output) and…

원문 언어: 영어

debug-rtl-sim

Debug an RTL or gate-level simulation that hangs, times out, produces no output, or computes the wrong answer, without dumping logs or waveforms into context. Covers the cheapest-first ladder (which gate failed, how the run stopped, a bounded fetch trace,…

원문 언어: 영어

study-pr

Run a measurement study on the flow and publish it as a closed, reference-only bazel-orfs pull request. Covers the two kinds of patch a study carries into OpenROAD, ORFS or yosys (instrumentation that stays on the study branch, candidate fixes carried in…

원문 언어: 영어

byo-openroad

Iterate on local OpenROAD source changes against a bazel-orfs flow by building the OpenROAD checkout binary and injecting it via OPENROAD_EXE (a bring-your-own / BYO loop), instead of encoding the diff as a base64 patch swapped into the archive_override. Use…

원문 언어: 영어

orfs-deps-preflight

Pre-flight an hours-long ORFS _deps / make-extract stage run (grt, place, route, SAIF) by dumping the stage's effective variables and mentally dry-running the flow TCL to confirm the code path you are testing will actually execute. Use before committing to…

원문 언어: 영어

odb-to-cpp

Convert an .odb file into a C++ header that reconstructs the design using odb API calls. Turn a whittled .odb into a self-contained C++ unit test.

원문 언어: 영어

openroad-debug

Diagnose and iterate on an OpenROAD/ORFS failure (crash, hang, race, nondeterministic result) and set up a fast edit/measure loop before you package a reproducer.

원문 언어: 영어

openroad-issue

Create a copy-paste-ready GitHub issue for an OpenROAD bug. File it upstream as a git am patch + failing bazel test.

원문 언어: 영어

untar-and-run-report

Produce an untar and run reproducer archive for an OpenROAD bug, plus paste-ready text for a GitHub issue comment.

원문 언어: 영어