Improving Timing-Driven FPGA Packing with Physical Information
Why this work is in the frame
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Bibliographic record
Abstract
The traditional approach to FPGA packing and CLB-level placement has been shown to yield significantly worse quality than approaches which allow BLEs to move during placement. In practice, however, modern FPGA architectures require expensive DRC checks which can render full BLE-level placement impractical. We address this problem by proposing a novel clustering framework that uses physical information to produce better initial packings which can, in turn, reduce the amount of BLE-level placement that is required. We quantify our packing technique across accepted benchmarks and show that it produces results with 16% less wire length, 19% smaller minimum channel widths, and 8% less critical path delay, on average, than leading methods.
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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