Raises the bound from -j8 to -j12: the incident dump measured 1.17 GB average per cc1plus,
so 12 in flight is ~14 GB typical, well inside the 40 GB cgroup ceiling that is the real
guarantee. Keeps the file byte-identical to snaporca's copy, which the header requires.
Dockerfile.deps builds the deps with -j 12 for the same reason, and symlinks
deps/build/destdir -> deps/build/OrcaSlicer_dep: this tree installs under the latter name
while the orcacad_buildcache volume has the former baked as absolute paths in its CMakeCache.
Same tree, two names — without the link, one directory rename costs a full cold rebuild.
Both forks ran this script at once on 2026-08-21, each with ninja -j$(nproc)=16.
36 cc1plus held 42 GB of a 62 GB box, the kernel OOM-killed for 2h28m, ssh went
unreachable, lightdm was destroyed (2946 session kill events), and neither build
produced a single object file.
Three bounds, weakest to strongest: a flock on a path SHARED by both forks so
they serialise instead of summing; -j8 so the box stays usable while it
compiles; and --memory on the container, which is the actual guarantee — a
runaway build now dies inside its own cgroup instead of taking the host with it.
--memory-swap is pinned equal to --memory because swap thrash is what made ssh
hang rather than fail.
Kept byte-identical to the copy in the snaporca fork, as the header requires.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Mirror of snaporca ac85277bac..0e7cb3ec78 (six changes, applied as a patch to
DesignPanel.cpp rather than copied, so this fork's 30 permitted divergent lines survive
— parity re-checked afterwards: the five shared files are byte-identical, DesignCanvas.cpp
and DesignPanel.cpp differ by exactly 16 and 30 lines).
- The straight slot's inline field says Radius, which is what it sets. It stores the
half-width and passed the typed number through unchanged, so 30 produced a 60 mm slot.
- The offer opens from the keyboard (Menu, Shift+F10), anchored on the viewport rather
than wherever the pointer happens to be. The card hint names the new route.
- The sketch card's Plane combo is gone; the plane comes from the viewport. Also stops
build_candidate collapsing a face plane to a base plane while editing.
- Mass properties and the dead Edit row are wired into the offer; DesignOffer.hpp is
regenerated from tool_atlas.json, verified by re-running the generator and diffing.
- docs/rig_build_traps.md + scripts/rig-build.sh, which derives its fork identity from
project() so it cannot be pointed at the other fork's image or volume.
- docs/design_tab.md refreshed (44 commits stale) + a PR description, with this fork's
own merge-base and diff shape rather than snaporca's.
Built green in the deps container with the new script and verified on the rig: Menu and
Shift+F10 both open the offer at the viewport centre with the pointer parked off-canvas,
and the sketch card shows no Plane row.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LyRwbuq6fjn3VV9U9UvhBM
Tommaso Bianchi