Analytical placement for heterogeneous FPGAs
Why this work is in the frame
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Bibliographic record
Abstract
We present HeAP, an analytical placement algorithm for heterogeneous FPGAs comprised of LUT-based logic blocks, multiplier/DSP blocks and block RAMs. Specifically, we adapt a state-of-the-art ASIC-based analytical placer to target FPGAs with heterogeneous blocks located at discrete locations throughout the fabric. Our placer also handles macros of LUT-based blocks with specific layout requirements, such as carry chains. Results show that our placer delivers a 4× speedup, on average, compared to Altera's non-timing driven flow, at the cost of a 5% increase in postrouted wirelength, and an 11× speedup compared to Altera's timing-driven flow, at the cost of a 4% increase in post-routed wirelength and a 9% reduction in maximum operating frequency. We also compare with an academic simulated annealing-based placer and demonstrate a 7.4× runtime advantage with 6% better placement quality.
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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