Evidence
Explore Lattiform’s FEA solver verification reports, including manufactured solutions, convergence tests and benchmark comparisons. They cover specific historical routes, not the entire Lattiform 0.1.1 (build 9) release. No physical validation or certification is claimed.
Reports V3 and V4
Tested the former FEA Preview’s linear static route as built in September 2026. Not repeated for the Lattiform app.
Report V6
Tested a nonlinear solver source revision (f9f01cbbac). Not a shipped build; validation status NOT_VALIDATED.
No published evidence
Available in Lattiform without a verification report.
No published report
An internal canonical run (64 of 64 checks) covered the source that added the independent double-precision check, which the 19 October 2026 release includes. The run was not repeated on the release package.
No published evidence
Release testing exercises CAD operations; there is no published report on geometry accuracy or exchange.
Release testing only
Through the bundled helper of the 19 October 2026 release, a table part was built and a fillet committed, and a fillet on a tangent edge was refused by name with the model unchanged. Software testing, not numerical evidence.
17 September 2026 · 208 pages
Run 20260917T124621Z-v4 · source 8234aa0b
Route: Packaged linear static Metal route, release build, Apple M5 Pro, macOS 26.5
496 rows passed with all 10,305 named gates evaluated: manufactured solutions, element operator checks, 160 differential problems against the double-precision CPU solver, recovery, refusal behaviour and scale to one million elements.
4 September 2026 · 146 pages
Run 20260904T112309Z-launch-final · source c15b75da1
Route: linear static route of the former FEA Preview
131 rows passed, 1 partial, 10 not supported. Remains the record of correlation with NASA SP-224 and MSC Nastran Verification Guide tables.
24 September 2026 · 363 pages
Run 20260924T091410Z · source f9f01cbbac
Route: Nonlinear static solver source
1,045 rows passed with 7,847 gates evaluated, 26 superseded and 1 not supported. It verifies source code, not a packaged build.
Sources are commits in Lattiform’s historical repository, before the 2 October 2026 migration. No report has been run on a released version of Lattiform.
The 19 October 2026 release was signed, notarised by Apple and checked by updating from the previous release. On its release source the whole test suite ran 10,950 tests, of which 97 failed: 84 already failed on the earlier source the comparison started from, 11 are window and app-host tests that cannot pass where the suite ran, and 2 came from other source changes. That is software testing, not numerical certification.
Nothing here is a certification by ASME, NAFEMS or any other body, and no equivalence to ANSYS, NASTRAN, Abaqus or any other code is claimed.
The reports compare against known answers and Lattiform’s own double-precision solver. A defect shared by both is not detected, and no measurements from physical tests are used.
Stress was compared away from singularities, so nothing is said about peak stress at a sharp corner or a support edge. Determinism was shown on one Mac with one build.
Read the solver’s record and warnings with every result, and use the mesh convergence sequence before quoting a value. A competent person should check results before safety-related use.
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These reports describe earlier code, not verified performance of the released app. Use the trial to evaluate current workflows, inspect solver records and establish whether Lattiform fits your work.
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