CoChrono: A Unified Hardware/Software Performance Analysis Tool for SoC-FPGA Codesign
Bibliographic record
Abstract
High-level embedded system design tools are making the design of complex SoC-FPGA systems more accessible than ever before. However, this comes at the cost of more opacity as implementations result from heavy transformations made by high-level synthesis tools, while there is a lack of complete suitable performance analysis tools for the resulting implementations. This paper proposes a unified application programmer interface and methodology that enables the extraction of time points to instrument performance metrics for hardware/software co-simulation and monitoring the SoC-FPGA execution. The proposed tool, called CoChrono, leverages high-level synthesis and code gener-ation to access metrics similarly in software and hardware C++ code. The tool's features and low overhead are demonstrated with a practical application of architecture exploration and simulation model validation. Compared to instruments manually inserted using existing tools, CoChrono significantly reduces the effort required to validate complex timing constraints in hardware/soft-ware systems.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.007 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.011 | 0.002 |
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 source (direct Gemma or distilled Codex), 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".