Titan 2.0: Enabling Open-Source CAD Evaluation with a Modern Architecture Capture
Bibliographic record
Abstract
This paper presents an updated version of the Titan (Quartus + VPR) flow, and a VPR-compatible architecture description of Intel's Stratix 10 device. Together these components enable large designs to be targeted at a complex and realistic architecture, facilitating improved benchmarking and optimization of open-source CAD flows. Additionally, the Stratix 10 architecture capture is a useful baseline architecture on which proposed new FPGA features can be evaluated. We capture the device primitives, intra-block connectivity, device floorplans, routing architecture and timing with reasonable fidelity in the human-readable VTR architecture format, enabling easy modification by researchers. Using the updated Titan flow and Stratix 10 capture, we compare the quality of results (QoR), runtime, and resource utilization of VPR to Quartus Prime. The results show that VPR's overall runtime is comparable and its memory footprint is smaller than that of Quartus, but the packer runtime is higher and Quartus achieves better wirelength and frequency. We identify causes of the slower packing runtime in VPR and suggest directions for future improvements.
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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) | 0.000 | 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 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".