A single-chip ring-based multiprocessor with region-level filtering of coherence traffic
Bibliographic record
Abstract
This paper presents the architecture and prototype hardware implementation of a single-chip shared-memory multiprocessor based on a ring interconnect with support for adaptive filtering of coherence traffic. Our implementation is suitable for application-specific designs and avoids the complexity associated with directory-based cache coherence by limiting writes to addresses that are local to the requesting node while maintaining cache coherence for shared data throughout the system. In addition, we seek to adaptively restrict the scope of coherence operations by employing filter structures in hardware with modest storage requirements. To characterize the logic utilization of the proposed filters relative to other system components, a prototype multiprocessor system has been described in 4250 lines of synthesizable SystemVerilog code and implemented in field-programmable logic. Synthesis results are presented to characterize the logic overhead of the filter structures, and operational results are presented to demonstrate their behavior.
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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 | 0.001 | 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".