# MVGAL Development Progress

**Version:** 0.2.2 | **Updated:** May 2026 | **Completion:** ~95%

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## Development Timeline

| Phase | Period | Status |
|-------|--------|--------|
| Phase 1: Architecture & Research | Jan 2025 | ✅ Complete |
| Phase 2: Core Modules | Jan–Mar 2025 | ✅ Complete |
| Phase 3: API Interception | Mar–Apr 2025 | ✅ Complete |
| Phase 4: Testing & QA | Apr 2025 | ✅ Complete |
| Phase 5: Documentation | Apr 2025 | ✅ Complete |
| Phase 6: Execution Engine + Rust | Apr–May 2026 | ✅ Complete |
| Phase 7: Tools, Steam, UI, OpenGL | May 2026 | ✅ Complete |
| Phase 8: Root cleanup + CI | May 2026 | ✅ Complete |

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## Phase 1: Architecture Research (100%)

- Linux DRM/KMS subsystem analysis
- AMD amdgpu, NVIDIA open-kernel-modules, Intel i915/xe, Moore Threads mtgpu-drv study
- Multi-GPU Vulkan explicit API research (`VK_KHR_device_group`)
- PCIe P2P DMA framework analysis
- DMA-BUF mechanism and vendor support matrix
- Vulkan layer development patterns
- Documented in `docs/ARCHITECTURE_RESEARCH.md`, `docs/research/`

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## Phase 2: Core Modules (100%)

### Kernel Module
- `mvgal_core.c` — DRM registration, `/dev/mvgal0`, 10 ioctls
- `mvgal_device.c` — logical device, GPU enumeration, capability profile
- `mvgal_memory.c` — DMA-BUF, unified virtual address space
- `mvgal_scheduler.c` — 16-level priority queue, workload dispatch
- `mvgal_sync.c` — cross-vendor fences, timeline semaphores
- Vendor ops: AMD (TTM, DPM), NVIDIA (user-space shim), Intel (i915+xe), MTT

### Userspace Library
- GPU manager: sysfs scan, PCI enumeration, health monitoring
- Memory manager: DMA-BUF, P2P, allocator, sync (2,576 LOC)
- Scheduler: 7 strategies, load balancer, workload splitter (2,275 LOC)
- Core API: init, context, strategy, stats, fences, semaphores
- Logging: 22 functions, thread-safe, color, syslog, file, callbacks
- Config: INI format, defaults, validation, callbacks
- IPC: Unix socket, magic header, 11 message types

### Public API Headers
- 13 headers, 220+ public functions, fully documented

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## Phase 3: API Interception (100% for Vulkan, OpenCL, CUDA)

### Vulkan Layer
- Full dispatch-chain layer (`vk_layer.c`, ~1,205 LOC)
- 17 intercepted functions across instance, device, queue, physical device
- Physical device property caching for telemetry
- Atomic submit counter, debug logging, log file support
- Registered as implicit layer via JSON manifest

### OpenCL Layer
- LD_PRELOAD wrapper (`cl_intercept.c`, ~600 LOC)
- Platform + device interception
- NDRange kernel partitioning across GPUs
- Registered via `/etc/OpenCL/vendors/mvgal.icd`

### CUDA Shim
- LD_PRELOAD wrapper (`cuda_wrapper.c`, ~1,340 LOC)
- 40+ CUDA Driver and Runtime API functions
- Kernel launch interception (`cuLaunchKernel`, `cudaLaunchKernel`)
- Cross-GPU copy detection, memory tracking per GPU
- 6 distribution strategies

### OpenGL Preload
- `mvgal_gl_preload.c` — intercepts `glXSwapBuffers` + `eglSwapBuffers`
- Frame pacing telemetry injection
- Works with Zink (Mesa OpenGL→Vulkan)

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## Phase 4: Testing (97.9%)

| Suite | Pass/Total |
|-------|-----------|
| C unit tests | 5/5 |
| C integration tests | 1/1 |
| Rust unit tests | 10/10 |
| Synthetic benchmarks | 10/10 |
| Real-world benchmarks | 12/12 |
| Stress benchmarks | 9/10 (1 cosmetic) |
| **Total** | **47/48** |

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## Phase 5: Documentation (100%)

- 23 markdown files in `docs/`
- All public API headers documented with Doxygen-style comments
- Architecture diagrams, data flow diagrams
- Per-vendor driver integration guide
- Gaming, Steam, Rust development guides

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## Phase 6: Execution Engine + Rust (100%)

### Execution Engine (`src/userspace/execution/`)
- Frame session lifecycle: begin → submit → present
- Migration plan generation (DMA-BUF, P2P, staging, mirror)
- Steam/Proton profile generation
- Integration with scheduler and memory manager

### Rust Safety Crates (`safe/`)
- `fence_manager`: cross-device fence lifecycle, state machine
- `memory_safety`: allocation tracking, ref counting, DMA-BUF association
- `capability_model`: GPU capability normalization, JSON serialization
- Cargo workspace, edition 2021, MSRV 1.75
- Full C FFI interfaces, 10 unit tests

### GPU Health Monitoring
- 8 new API functions in `mvgal_gpu.h`
- Background monitoring thread per GPU
- Configurable thresholds (temp, utilization, memory)
- Callback system for health alerts

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## Phase 7: Tools, Steam, UI, OpenGL (100%)

### CLI Tools
- `mvgal-info` — GPU info, VRAM, temp, utilization, JSON output
- `mvgal-status` — real-time bars, daemon check, `--watch` mode
- `mvgal-bench` — memory BW, compute FLOPS, latency, sync overhead
- `mvgal-compat` — system check + 15+ app compatibility database
- All compile with `-Wall -Wextra -Werror` on GCC 16

### Steam/Proton Layer
- `mvgal_frame_pacer.c/h` — vsync-aligned frame pacing, ring buffer depth 8
- `mvgal_steam_compat.sh` — Steam compatibility tool entry point
- `toolmanifest.vdf` + `compatibilitytool.vdf` — Steam registration

### Qt Dashboard + REST API
- `mvgal_dashboard.cpp/h` — Qt5/Qt6, 4 tabs, per-GPU widgets
- `mvgal_rest_server.go` — Go HTTP server, 5 REST endpoints

### OpenGL Layer
- `mvgal_gl_preload.c` — LD_PRELOAD shim for frame pacing

### Professional Integration
- Blender, Unreal Engine, PyTorch/TensorFlow/JAX, FFmpeg guides
- Automated test scripts

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## Phase 8: Root Cleanup + CI (100%)

- Moved generated/backup files to `.archive/` (gitignored)
- Both CI workflows set to `workflow_dispatch` (manual-only)
- `build/install.sh` — generic installer using `pkexec`
- `build/cmake/toolchains/aarch64-linux-gnu.cmake` — ARM64 cross-compile
- All `sudo` replaced with `pkexec` in scripts

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## Remaining Work (~5%)

| Item | Priority | Notes |
|------|----------|-------|
| D3D/Metal/WebGPU intercept logic | Medium | Skeletons exist, need implementation |
| Full Vulkan ICD (virtual VkPhysicalDevice) | Low | Phase 5 planned feature |
| Network-distributed GPU pooling | Future | Design accommodated |
| AI-driven scheduler | Future | Design accommodated |

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## Code Statistics

| Language | LOC | Files |
|----------|-----|-------|
| C (userspace) | ~25,700 | ~28 |
| C (kernel) | ~2,000 | ~9 |
| C++ (daemon) | ~3,000 | ~16 |
| Rust | ~748 | ~6 |
| Go | ~372 | ~1 |
| Shell | ~500 | ~8 |
| **Total** | **~32,320** | **~68** |
