{"sections":[{"heading":"Make the comparison reproducible","steps":["Use an unmodified copy of the complete supplied example and record its file hashes.","Record the InductEx and engine versions, extraction mode, units and all non-default mesh/settings changes.","Compare the same quantity and orientation, not a design value with an extracted value or a matrix entry with a different convention.","Check that both outputs belong to completed runs. Repeat the comparison with controlled mesh refinement."]},{"heading":"Account for algorithm changes","paragraphs":["Support history records results changing after mesh and edge-slicing changes between older releases. An old manual table is a versioned reference, not a universal tolerance for every newer build.","Historical advice to disable an algorithm for comparison is a diagnostic for that release. It is not a recommendation to disable newer accuracy features for production."]},{"heading":"Report a discrepancy","paragraphs":["Include the exact input set, settings, versions, quantity, observed difference and convergence evidence. A fresh reference output for each published example remains part of this knowledge base's review work."]},{"heading":"Compare with the design","paragraphs":["Aim for low reported relative error in the model fit. The owner has not specified a new numerical cutoff for SVD or GMRES residuals.","For a meaningful nonzero design inductance, use 100 × abs(L_extracted − L_design) / abs(L_design) to compare the values. The general design target is below 10% deviation; below 5% is preferred.","Design agreement, model-fit residuals and solver convergence answer different questions. Check the physical model and refinement behaviour as well; these percentages are not universal solver-error or regression tolerances."]}],"canonical_url":"https://www.sun-magnetics.com/knowledge-base/inductex-example-result-differences","url":"/knowledge-base/inductex-example-result-differences","known_issues":[],"search_record":{"execution":false,"relatedProducts":[],"version_tags":["InductEx 8 preview"],"text":"My example results differ from numbers in an older manual Compare the exact inputs, process, engine versions and meshing settings before assuming a regression. InductEx Version-specific numerical comparisons Troubleshooting Make the comparison reproducible Use an unmodified copy of the complete supplied example and record its file hashes. Record the InductEx and engine versions, extraction mode, units and all non-default mesh/settings changes. Compare the same quantity and orientation, not a design value with an extracted value or a matrix entry with a different convention. Check that both outputs belong to completed runs. Repeat the comparison with controlled mesh refinement.  Account for algorithm changes Support history records results changing after mesh and edge-slicing changes between older releases. An old manual table is a versioned reference, not a universal tolerance for every newer build. Historical advice to disable an algorithm for comparison is a diagnostic for that release. It is not a recommendation to disable newer accuracy features for production.  Report a discrepancy Include the exact input set, settings, versions, quantity, observed difference and convergence evidence. A fresh reference output for each published example remains part of this knowledge base's review work.  Compare with the design Aim for low reported relative error in the model fit. The owner has not specified a new numerical cutoff for SVD or GMRES residuals. For a meaningful nonzero design inductance, use 100 × abs(L_extracted − L_design) / abs(L_design) to compare the values. The general design target is below 10% deviation; below 5% is preferred. Design agreement, model-fit residuals and solver convergence answer different questions. Check the physical model and refinement behaviour as well; these percentages are not universal solver-error or regression tolerances. ","id":"inductex-example-result-differences","keywords":"","kind":"Troubleshooting","title":"My example results differ from numbers in an older manual","product":"InductEx"},"version":"Version-specific numerical comparisons","id":"inductex-example-result-differences","related":["/knowledge-base/inductex-mesh-convergence","/knowledge-base/support-effective-report"],"downloads":[],"publication_status":"published","numerical_output":null,"provenance":{"execution_checks":[],"figure_evidence":[],"review_notes":["Support history informed this draft. Current-source guidance has been checked; a fresh walkthrough on the intended distributed release and product-owner review remain pending."],"scope":"Recorded inputs/builds only. Complete walkthrough and final-package acceptance remain separate.","verification_requirements":{"gui_method":"not-required-for-this-answer","status":"review-incomplete","illustrations":"not-required-for-this-answer","required":["technical-review","release-applicability","numerical-interpretation","recovery"],"legacy_walkthrough_field":"pending retained; not evidence of a complete scenario"},"sources":[{"id":"support:SUP-009","section":"Generalised editorial finding; outcome qualification retained"},{"id":"inductex:docs/manual/ix_output.tex","section":"Units, mesh quality and solution quality"},{"id":"inductex:docs/manual/studio_results.tex","section":"Current-run results"},{"id":"owner:technical-review-20261102","section":"Owner guidance on low relative error and design-inductance agreement"}]},"title":"My example results differ from numbers in an older manual","type":"Troubleshooting","markdown_url":"/_functions/kbResource?path=markdown%2Finductex-example-result-differences.md","summary":"Compare the exact inputs, process, engine versions and meshing settings before assuming a regression.","product":"InductEx"}