RALF: reliability analysis for logic faults: an exact algorithm and its applications
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Bibliographic record
Abstract
Abstract—Reliability analysis for a logic circuit is one of the primary tasks in fault-tolerant logic synthesis. Given a fault model, it quantifies the impact of faults on the full-chip fault rate. We present RALF, an exact algorithm for calculating the reliability of a logic circuit. RALF is based on the compilation of a circuit to deterministic decomposable negation normal form (d-DNNF), a representation for Boolean formulas that can be more succinct than BDDs. Our algorithm can solve a large set of MCNC benchmark circuits within 5 minutes, enabling an optimality studyof Monte Carlo simulation, a popular estimation method for reliability analysis, on real benchmark circuits. Our study shows that Monte Carlo simulation with a small set of random vectors generally has a high fidelity for the computation of full-chip fault rates and the criticality of single gates. While we focus on reliability analysis, RALF can also be used to efficiently locate random pattern resistant faults. This can be used to identify where methods other than random simulation should be used for accurate criticality calculations and where to enhance the testability of a circuit. I.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it