Bibliographic record
Abstract
We explore using pulsed latches for timing optimization -- a first in the FPGA community. Pulsed latches are transparent latches driven by a clock with a non-standard (non-50%) duty cycle. We exploit existing functionality within commercial FPGA chips to implement latch-based optimizations that do not have the power or area drawbacks associated with other timing optimization approaches, such as clock skew and retiming. We propose an algorithm that iteratively replaces certain flip-flops in a logic design with latches for an improvement in circuit speed. Results show that much of the performance improvement achieved by using multiple skewed clocks can also be achieved using a single clock and latches. We also consider the impact of short delay paths (i.e. minimum delays), which can cause hold-time violations. Under conservative minimum delay assumptions, our latch-based optimization, operating on the routed design, provides a 5% performance improvement, on average, essentially for "free" (i.e. without any re-routing/delay padding). We show that short paths greatly hinder the ability of using latches for speed improvement, motivating further work to reduce their effects.
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How this classification was reachedexpand
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) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".