mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
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Jukka Aho
626266c990
**Three Manuals for Three Audiences:** 1. **User Manual** (docs/user/) - "Just Get It Done" - For end users, engineers, students - Simple, practical, step-by-step - Quick start, tutorials, examples, troubleshooting - Philosophy: Show me how to solve my problem 2. **Contributor Manual** (docs/contributor/) - "Show Me the Code" - For developers, contributors, advanced users - Technical, detailed, design rationale - Testing, architecture, performance, CI/CD - Philosophy: Explain HOW and WHY 3. **The JuliaFEM Book** (docs/book/) - "Let Me Show You How I Think" - For researchers, theory nerds, and Jukka - Comprehensive, educational, opinionated, personal - Math foundations, design philosophy, history, research - Philosophy: Mix theory, code, and personal experience **Reorganization:** - Moved: TESTING_PHILOSOPHY.md → contributor/testing_philosophy.md - Moved: STATUS.md → contributor/status.md - Moved: TEST_FIXES_NEEDED.md → contributor/test_fixes_needed.md - Moved: lagrange_basis_functions.md → book/lagrange_basis_functions.md - Moved: benchmarks/ → book/benchmarks/ - Created: docs/README.md (main index explaining structure) - Created: README.md in each section explaining audience and contents - Updated: All references in scripts and source files **Naming:** All docs now lowercase (testing_philosophy not TESTING_PHILOSOPHY) **Benefits:** - Clear separation of concerns - Users don't get overwhelmed with implementation details - Contributors get technical depth - Book preserves deep theory and personal insights - Each manual optimized for its audience **Next:** Populate each section with appropriate content
96 lines
3.3 KiB
Markdown
96 lines
3.3 KiB
Markdown
# JuliaFEM Revival Status - November 8, 2025
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## ✅ SUCCESS: Package Loads!
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JuliaFEM now loads successfully on Julia 1.12.1:
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```bash
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julia> using JuliaFEM
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✓ JuliaFEM loads successfully
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Exported names: 171
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```
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## Fixed Issues
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### 1. Element Type Signature Errors (CRITICAL)
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**Problem:** Element type changed from `Element{Basis}` to `Element{M, Basis} where M`
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**Fixed in:**
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- `vendor/FEMBase.jl/src/FEMBase.jl` - Added AbstractBasis import
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- `vendor/FEMBase.jl/src/elements_lagrange.jl` - Fixed Poi1 subtyping
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- `vendor/FEMBeam.jl/src/beam3d.jl` - 3 function signatures
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- `vendor/MortarContact2D.jl/src/mortar2d.jl` - 2 functions
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- `vendor/MortarContact2D.jl/src/contact2d.jl` - 3 functions
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- `vendor/MortarContact2DAD.jl/src/mortar2dad.jl` - 1 function
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- `vendor/MortarContact2DAD.jl/src/contact2dad.jl` - 1 function
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- `src/problems_mortar_3d.jl` - 2 functions (M renamed to FS to avoid conflict)
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- `src/problems_contact_3d.jl` - 3 functions (M renamed to FS)
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- `src/io.jl` - 15 dispatch functions
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### 2. Merge Conflicts (Issue #250 from 2019)
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**Fixed in:**
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- `test/runtests.jl` - Removed conflict markers
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- `src/problems_elasticity.jl` - Resolved and simplified
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### 3. Missing Package Dependencies
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**Fixed:**
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- Created `vendor/MortarContact2DAD.jl/Project.toml`
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- Updated `Manifest.toml` to use local vendor packages
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### 4. Parallel Assembly Code
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**Fixed:**
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- Removed references to non-existent `problem.assemble_parallel` field
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- Simplified to use non-threaded assembly (threading can be added back later)
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## Test Status
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**Test Suite:** 5 passed, 51 errored (but package loads!)
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The errors are due to deeper API incompatibilities with Julia 1.12:
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- Method signature mismatches (e.g., `jacobian` function)
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- Some tests expect features from incomplete multithreading branch
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- API evolution over 6+ years (Julia 0.6 → 1.12)
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## What Works
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✅ Package installation and loading
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✅ All vendor packages compile
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✅ No type signature errors
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✅ Core data structures intact
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✅ 171 symbols exported
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✅ Basic FEM infrastructure present
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## Next Steps for Full Revival
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1. **Fix jacobian/geometry method mismatches** - Update vendor/FEMBasis for Julia 1.12
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2. **Fix remaining test errors** - Systematic fixes for API changes
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3. **Add threading infrastructure** - Properly implement parallel assembly
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4. **Update documentation** - Reflect Julia 1.12 compatibility
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5. **Benchmark performance** - Establish baseline vs old version
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## Key Learnings
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- Multi-package ecosystems are maintenance nightmares (see llm/TECHNICAL_VISION.md)
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- Type stability critical: Dict-based fields caused 100× slowdown
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- Git history cleanup successful: 99MB → 9.8MB (90% reduction)
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- Vendor packages approach works for development
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## Files Modified
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**Critical fixes (this session):**
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- 10 source files with Element type fixes
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- 2 merge conflict resolutions
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- 2 dependency files (Project.toml, Manifest.toml)
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- 1 assembly simplification
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**Scripts created:**
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- `test.sh` - Test runner
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- `fix_src_element_types.py` - Automated type fixing
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## Conclusion
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**Mission accomplished:** JuliaFEM loads on modern Julia!
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While tests have errors, the **fundamental blocker (type signatures) is resolved**.
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The package is now in a state where systematic fixing of remaining issues can proceed.
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The 51 test errors are fixable - they're API evolution issues, not architectural problems.
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