Deterministic Inference Accelerator
Travis L. Guckert
LeMay Publishing
PATENTS
Deterministic Inference Accelerator
R&D Whitepapers10,702 words67 chapters
Published by LeMay Publishing. 10,702 words across 67 chapters.
About This Publication
A hardware architecture for reproducible, latency-bounded neural network inference, addressing the proliferation of neural network deployment in safety-critical and regulated domains requiring deterministic output guarantees.
Published by LeMay Publishing, a division of LeMay. Massachusetts.
ISBN: 979-8-0000-7064-2
Chapters
1DETERMINISTIC INFERENCE ACCELERATOR
2A Hardware Architecture for Reproducible, Latency-Bounded Neural Network Inference
3TABLE OF CONTENTS
4CHAPTER 1
5EXECUTIVE SUMMARY
6CHAPTER 2
7BACKGROUND AND MOTIVATION
82.1 The Non-Determinism Problem in Neural Network Inference
92.2 Sources of Non-Determinism in Contemporary Accelerators
102.3 Industry Requirements for Deterministic Computation
112.4 Limitations of Software-Only Approaches
12CHAPTER 3
13PRIOR ART AND RELATED WORK
143.1 Existing Inference Accelerator Architectures
153.2 Deterministic Computing Paradigms
163.3 Fixed-Point and Quantized Arithmetic Units
173.4 Gap Analysis
18CHAPTER 4
19ARCHITECTURE OVERVIEW
204.1 Design Philosophy and Principles
214.2 Top-Level Block Diagram
224.3 Deterministic Execution Pipeline
234.4 Memory Subsystem Architecture
244.5 Clock Domain and Synchronization Strategy
25CHAPTER 5
26DETERMINISTIC ARITHMETIC ENGINE
275.1 Fixed-Order Accumulation Unit
285.2 Canonical Rounding and Saturation Logic
295.3 Fused Multiply-Accumulate with Deterministic Reduction
305.4 Support for Multiple Precision Modes
315.5 Formal Verification of Arithmetic Determinism
32CHAPTER 6
33SCHEDULING AND DATAFLOW CONTROL
346.1 Static Scheduling Architecture
356.2 Deterministic Tiling and Loop Ordering
366.3 Barrier Synchronization Mechanism
376.4 Worst-Case Execution Time Guarantees
38CHAPTER 7
39MEMORY AND INTERCONNECT DETERMINISM
407.1 Scratchpad Memory Architecture
417.2 Deterministic DMA Engine
427.3 Banked SRAM with Conflict-Free Access Patterns
437.4 On-Chip Network with Guaranteed Latency
44CHAPTER 8
45SYSTEM INTEGRATION AND PROGRAMMING MODEL
468.1 Host Interface and Command Protocol
478.2 Compiler Toolchain for Deterministic Mapping
488.3 Runtime Verification and Audit Trail
498.4 Integration with Safety-Critical Software Stacks
50CHAPTER 9
51EXPERIMENTAL EVALUATION
529.1 Simulation Methodology
539.2 Determinism Verification Results
549.3 Performance and Efficiency Analysis
559.4 Comparison with Non-Deterministic Accelerators
56CHAPTER 10
57CLAIMS AND NOVEL CONTRIBUTIONS
5810.1 Summary of Inventive Claims
5910.2 Industrial Applicability
6010.3 Scope of Disclosure
61CHAPTER 11
62CONCLUSION AND FUTURE DIRECTIONS
63BIBLIOGRAPHY
64APPENDIX A
65GLOSSARY OF TERMS
66APPENDIX B
67DETAILED MICROARCHITECTURAL PARAMETERS