A Compressed and Accurate Sparse Deep Learning-based Workload-Aware Timing Error Model

This paper showcases the novel application of Deep-Learning (DL) in the development of accurate microarchitecture and workload-aware timing error models and investigates methods such as sparsification for reducing their complexity, while maintaining high accuracy. Our study shows that DL can help increase the accuracy and true positive rate (TPR) of workload-aware models for a pipelined floating-point core compared to existing models. In addition, we demonstrate that removing up to 40% of the total neurons has minimal impact on the accuracy and overall predictive performance (up to 2.2%) of our DL-based timing error models, while significantly reducing the computational complexity. In fact, the complexity of the sparse model is approximately 2× smaller than the dense one.