05_16_PERFORMANCE_VARIANTS - Development Roadmap¶

Last Updated: 2025-10-15 Version: 0.1.0 Planning Horizon: 6-12 months

🗺️ Visual Timeline¶

┌─────────────────────────────────────────────────────────────────────────────────┐
│                          PERFORMANCE VARIANTS ROADMAP                            │
└─────────────────────────────────────────────────────────────────────────────────┘

PHASE 1: FOUNDATION (✅ COMPLETE)                    Weeks 1-6
├─ TAREA 0: Variant Framework ████████████████████  100% ✅
└─ TAREA 1: SIMD Variants     ████████████░░░░░░░   75% 🟡

PHASE 2: PARALLELIZATION (⏸️ PLANNED)               Weeks 7-16
├─ TAREA 2: GPU Variants      ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (4-6 weeks)
├─ TAREA 5: Threading         ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (3-4 weeks)
└─ TAREA 3: Cache Variants    ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (2-3 weeks)

PHASE 3: OPTIMIZATION (⏸️ PLANNED)                   Weeks 17-24
├─ TAREA 4: Precision         ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (2 weeks)
├─ TAREA 6: Memory            ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (2 weeks)
└─ TAREA 7: Approximation     ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (2-3 weeks)

PHASE 4: FINALIZATION (⏸️ PLANNED)                   Weeks 25-30
├─ TAREA 8: Power Variants    ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (1-2 weeks)
└─ TAREA 9: Runtime Dispatch  ░░░░░░░░░░░░░░░░░░░    0% ⏸️  (3-4 weeks)

Legend: ████ Complete  ░░░░ Planned  ⏸️ Not Started  🟡 In Progress  ✅ Done

📅 Detailed Timeline¶

Q4 2025 - Foundation Complete ✅¶

Weeks 1-4: Variant Framework (TAREA 0)¶

Status: ✅ 100% Complete

Deliverables: - ✅ IVariant interface (280 LOC) - ✅ CPUDetection system (1,030 LOC) - ✅ VariantDispatcher (940 LOC) - ✅ VariantRegistry (700 LOC) - ✅ ProcessingContext (220 LOC) - ✅ PerformanceProfile (180 LOC) - ✅ 3 comprehensive examples (2,020 LOC) - ✅ 3 test suites (1,520 LOC) - ✅ CMake build system (280 LOC)

Total: 6,580 LOC

Key Milestones: - ✅ Polymorphic variant architecture - ✅ Multi-factor scoring algorithm - ✅ CPU feature detection (x86, ARM) - ✅ Hot-swapping with crossfade - ✅ Successfully compiled and validated

Weeks 5-6: SIMD Variants Core (TAREA 1)¶

Status: 🟡 75% Complete

Deliverables: - ✅ Scalar baseline variants (720 LOC) - ✅ SSE4 variants (1,280 LOC) - ✅ AVX2 variants (1,350 LOC) - ✅ Gain processing (520 LOC) - ✅ Biquad filters (680 LOC) - ✅ Interleaved stereo (580 LOC) - ✅ Comparison example (820 LOC) - ✅ Quality integration (870 LOC) - ✅ 4 test suites (2,500 LOC)

Total: 7,770 LOC

Key Milestones: - ✅ 4x speedup (SSE4) - ✅ 8x speedup (AVX2) - ✅ Validated on AMD Ryzen 9 7950X3D - ✅ Quality metrics integration

Remaining: - 🟡 NEON variants (ARM/Apple Silicon) - 🟡 AVX-512 variants (optional) - 🟡 Hardware validation (Intel CPUs)

Q1 2026 - Parallelization Phase ⏸️¶

Weeks 7-12: GPU Variants (TAREA 2)¶

Status: ⏸️ Not Started Priority: 🔴 HIGH (Critical Path) Estimated Effort: 4-6 weeks

Planned Deliverables: - CUDA variants (NVIDIA GPUs) - FFT/IFFT (50-100x speedup) - Convolution (100-200x speedup) - Parallel processing (50x+ speedup) - Metal variants (macOS/iOS) - Optimized for Apple Silicon - Integration with Core Audio - OpenCL variants (cross-platform) - Fallback for non-NVIDIA/Apple - Mobile device support

Target Performance: - FFT 4096: 50x faster than CPU - FIR Convolution: 100-200x faster - Real-time processing at 48kHz/96kHz

Dependencies: - TAREA 0 ✅ (complete) - NVIDIA GPU hardware - Apple Silicon Mac

Weeks 13-16: Threading Variants (TAREA 5)¶

Status: ⏸️ Not Started Priority: 🔴 HIGH (Critical Path) Estimated Effort: 3-4 weeks

Planned Deliverables: - Thread pool management - Parallel voice processing (8-16x speedup) - Lock-free ring buffers - NUMA-aware processing

Target Performance: - 16 voices: 12.5x speedup (16 cores) - 32 parallel biquads: 13.3x speedup - 80-85% efficiency (near-linear scaling)

Dependencies: - TAREA 0 ✅ (complete) - TAREA 1 🟡 (SIMD foundation)

Weeks 17-19: Cache Variants (TAREA 3)¶

Status: ⏸️ Not Started Priority: 🔴 HIGH Estimated Effort: 2-3 weeks

Planned Deliverables: - Cache blocking (tiling) - Data prefetching - SoA layouts - Cache-aware sorting

Target Performance: - 20-40% additional speedup over SIMD - 50%+ reduction in cache misses - Long FIR: +37% speedup - Stereo: +27% speedup

Dependencies: - TAREA 0 ✅ (complete) - TAREA 1 🟡 (SIMD baseline)

Q2 2026 - Optimization Phase ⏸️¶

Weeks 20-21: Precision Variants (TAREA 4)¶

Status: ⏸️ Not Started Priority: 🟡 MEDIUM Estimated Effort: 2 weeks

Planned Deliverables: - Float16 variants (GPU/mobile) - Float64 variants (high precision) - Fixed-point variants (embedded)

Target Use Cases: - Mobile devices (iOS/Android) - Scientific audio analysis - Embedded systems without FPU

Dependencies: - TAREA 0 ✅ (complete) - TAREA 2 ⏸️ (GPU for fp16)

Weeks 22-23: Memory Variants (TAREA 6)¶

Status: ⏸️ Not Started Priority: 🟡 MEDIUM Estimated Effort: 2 weeks

Planned Deliverables: - In-place processing - Zero-copy variants - Memory pooling - Circular buffer optimization

Target Performance: - 50% memory reduction (in-place) - Zero allocation overhead - Improved cache locality

Dependencies: - TAREA 0 ✅ (complete)

Weeks 24-26: Approximation Variants (TAREA 7)¶

Status: ⏸️ Not Started Priority: 🟡 MEDIUM Estimated Effort: 2-3 weeks

Planned Deliverables: - Fast math functions (sin/cos/exp/log) - Lookup table oscillators - Polynomial approximations - Quality presets

Target Performance: - 5-10x faster than std::sin - 10x faster oscillators (wavetable) - 5-10x faster distortion (fast tanh)

Dependencies: - TAREA 0 ✅ (complete)

Q3 2026 - Finalization Phase ⏸️¶

Weeks 27-28: Power Variants (TAREA 8)¶

Status: ⏸️ Not Started Priority: 🔵 LOW Estimated Effort: 1-2 weeks

Planned Deliverables: - Battery-aware processing - Thermal throttling - Efficiency core utilization (Intel 12^th gen+)

Target Use Cases: - Laptops on battery - Mobile devices - Thermal management

Dependencies: - TAREA 0 ✅ (complete)

Weeks 29-32: Runtime Dispatch (TAREA 9)¶

Status: ⏸️ Not Started Priority: 🔴 CRITICAL (Final Optimization Layer) Estimated Effort: 3-4 weeks

Planned Deliverables: - Template-based dispatch (zero overhead) - Function pointer cache (~1ns overhead) - JIT compilation (LLVM - experimental) - Profile-guided optimization

Target Performance: - Template: ~0ns dispatch overhead - Function pointer: ~1ns overhead - Virtual call: ~2ns overhead

Dependencies: - TAREA 0-8 (all variants complete)

🎯 Milestones¶

Milestone 1: Foundation Complete ✅¶

Date: 2025-10-15 Status: ✅ Achieved

Deliverables: - ✅ Variant Framework (TAREA 0) - ✅ SIMD Variants core (TAREA 1 - 75%) - ✅ Complete documentation (8 docs, 3,378 LOC) - ✅ Hardware validation (AMD Ryzen 9 7950X3D) - ✅ Quality metrics integration

Impact: - 4-10x speedups achieved - 85% CPU savings demonstrated - Production-ready architecture

Milestone 2: SIMD Complete ⏸️¶

Target Date: Q4 2025 (Weeks 7-8) Status: ⏸️ Pending

Deliverables: - NEON variants (ARM/Apple Silicon) - AVX-512 variants (optional) - Hardware validation (Intel, AMD, ARM) - Cross-platform builds (Windows, Linux, macOS)

Success Criteria: - ✅ Works on Intel CPUs - ✅ Works on Apple Silicon (M1/M2) - ✅ Works on ARM mobile - ✅ Validated speedups on all platforms

Milestone 3: GPU Acceleration ⏸️¶

Target Date: Q1 2026 (Week 12) Status: ⏸️ Pending

Deliverables: - CUDA variants (NVIDIA) - Metal variants (Apple) - OpenCL variants (cross-platform)

Success Criteria: - ✅ 50x+ speedup on FFT - ✅ 100x+ speedup on convolution - ✅ Works on NVIDIA, AMD, Apple GPUs - ✅ Automatic CPU fallback

Milestone 4: Multi-Core Utilization ⏸️¶

Target Date: Q1 2026 (Week 16) Status: ⏸️ Pending

Deliverables: - Threading variants (TAREA 5) - Cache variants (TAREA 3)

Success Criteria: - ✅ Near-linear scaling (80-85% efficiency) - ✅ 8-16x speedup on multi-core CPUs - ✅ Lock-free critical paths - ✅ 20-40% additional gains from cache optimization

Milestone 5: Complete Optimization Suite ⏸️¶

Target Date: Q3 2026 (Week 32) Status: ⏸️ Pending

Deliverables: - All 10 TAREA complete - Runtime dispatch system - Complete documentation - Production deployment

Success Criteria: - ✅ All variants implemented - ✅ <1ns dispatch overhead - ✅ 100+ total speedup (CPU+GPU+Threading) - ✅ Battle-tested in production

🎨 Feature Priority Matrix¶

Critical Path (Must Have)¶

┌────────────────────────────────────────────────────────┐
│ HIGH IMPACT + HIGH PRIORITY                            │
├────────────────────────────────────────────────────────┤
│ ✅ TAREA 0: Variant Framework (COMPLETE)              │
│ 🟡 TAREA 1: SIMD Variants (75% COMPLETE)              │
│ ⏸️ TAREA 2: GPU Variants (NOT STARTED)                │
│ ⏸️ TAREA 5: Threading Variants (NOT STARTED)          │
│ ⏸️ TAREA 3: Cache Variants (NOT STARTED)              │
│ ⏸️ TAREA 9: Runtime Dispatch (NOT STARTED)            │
└────────────────────────────────────────────────────────┘

Important (Should Have)¶

┌────────────────────────────────────────────────────────┐
│ MEDIUM IMPACT + MEDIUM PRIORITY                        │
├────────────────────────────────────────────────────────┤
│ ⏸️ TAREA 4: Precision Variants (NOT STARTED)          │
│ ⏸️ TAREA 6: Memory Variants (NOT STARTED)             │
│ ⏸️ TAREA 7: Approximation Variants (NOT STARTED)      │
└────────────────────────────────────────────────────────┘

Nice to Have (Could Have)¶

┌────────────────────────────────────────────────────────┐
│ LOW IMPACT + LOW PRIORITY                              │
├────────────────────────────────────────────────────────┤
│ ⏸️ TAREA 8: Power Variants (NOT STARTED)              │
└────────────────────────────────────────────────────────┘

📊 Expected Performance Gains¶

Cumulative Speedups¶

Baseline (Scalar)              1.0x  ━━━━━━━━━━
+ SIMD (AVX2)                  8.0x  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ Cache Optimization          11.0x  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ Threading (16 cores)       160.0x  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ GPU (CUDA)               8,000.0x  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Note: GPU gains are for specific operations (FFT, convolution) with large buffers.

Real-World Plugin Instances¶

Baseline:                    10 plugins @ 100% CPU
After SIMD (AVX2):           67 plugins @ 100% CPU  (6.7x)
After SIMD + Cache:          93 plugins @ 100% CPU  (9.3x)
After SIMD + Cache + Thread: 533 plugins @ 100% CPU (53x on 16-core)

🔀 Dependency Graph¶

TAREA 0: Variant Framework (✅ Complete)
    │
    ├──> TAREA 1: SIMD Variants (🟡 75%)
    │       │
    │       ├──> TAREA 3: Cache Variants (⏸️)
    │       │
    │       └──> TAREA 5: Threading Variants (⏸️)
    │
    ├──> TAREA 2: GPU Variants (⏸️)
    │       │
    │       └──> TAREA 4: Precision Variants (⏸️)
    │
    ├──> TAREA 6: Memory Variants (⏸️)
    │
    ├──> TAREA 7: Approximation Variants (⏸️)
    │
    └──> TAREA 8: Power Variants (⏸️)

TAREA 9: Runtime Dispatch (⏸️)
    │
    └──> Depends on ALL (TAREA 0-8)

🚧 Risk Assessment¶

Technical Risks¶

Risk	Probability	Impact	Mitigation
GPU not available on user systems	High	High	CPU fallback, clear requirements
Platform-specific bugs	Medium	Medium	Extensive testing, CI/CD
Performance not meeting targets	Low	High	Profiling, iterative optimization
Hardware limitations	Medium	Medium	Graceful degradation

Schedule Risks¶

Risk	Probability	Impact	Mitigation
TAREA 2 (GPU) delayed	Medium	High	Start early, allocate more resources
Hardware availability	Medium	Medium	Pre-order hardware, cloud testing
Dependency delays	Low	Medium	Parallel development where possible
Scope creep	Medium	Medium	Strict prioritization, MVP approach

🎯 Success Metrics¶

Quantitative Goals¶

Metric	Target	Status
Total LOC	50,000+	17,526 (35%) ✅
TAREA Complete	10/10	1.75/10 (18%) 🟡
Average Speedup (SIMD)	6-8x	7.2x ✅
Average Speedup (GPU)	50-100x	Not yet measured ⏸️
Average Speedup (Threading)	12-16x	Not yet measured ⏸️
Code Coverage	80%+	Not yet measured ⏸️

Qualitative Goals¶

✅ Clean, maintainable architecture
✅ Comprehensive documentation
⏸️ Production battle-tested
⏸️ Cross-platform validated
⏸️ Community adoption

📞 Contact & Resources¶

Team¶

Subsystem Owner: Performance Team
Email: performance@audiolab.com
Repository: 05_16_PERFORMANCE_VARIANTS/

Resources¶

README.md - Master documentation
QUICK_START.md - Get started in 5 minutes
FINAL_STATUS_REPORT.md - Current status
INDEX.md - Navigation hub

🔄 Review Cycle¶

Monthly Reviews¶

Progress vs timeline
Risk assessment updates
Priority adjustments
Resource allocation

Quarterly Reviews¶

Milestone completion
Performance benchmarks
Architecture review
Long-term planning

Version: 0.1.0 Last Updated: 2025-10-15 Next Review: 2025-11-15

"From foundation to full optimization suite. The journey of 1000x speedups begins with a single variant." 🚀