HPIPE: Heterogeneous Layer-Pipelined and Sparse-Aware CNN Inference for FPGAs
Bibliographic record
Abstract
This poster presents a novel cross-layer-pipelined Convolutional Neural Network accelerator architecture, and network compiler, that make use of precision minimization and parameter pruning to fit ResNet-50 entirely into on-chip memory on a Stratix 10 2800 FPGA. By statically partitioning the hardware across each of the layers in the network, our architecture enables full DSP utilization and reduces the soft logic per DSP ratio by roughly 4x over prior work on sparse CNN accelerators for FPGAs. This high DSP utilization, a frequency of 420MHz, and skipping zero weights enable our architecture to execute a sparse ResNet-50 model at a batch size of 1 at 3300 images/s, which is nearly 3x higher throughput than NVIDIA's fastest machine learning targeted GPU, the V100. We also present a network compiler and a flexible hardware interface that make it easy to add support for new types of neural networks, and to optimize these networks for FPGAs with different on-chip resources.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.001 |
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".