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Predicting Critical Warps In Near-Threshold Gpgpu Applications Using A Dynamic Choke Point Analysis, Sourav Sanyal
Predicting Critical Warps In Near-Threshold Gpgpu Applications Using A Dynamic Choke Point Analysis, Sourav Sanyal
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
General purpose graphics processing units (GP-GPU), owing to their enormous thread-level parallelism, can significantly improve the power consumption at the near-threshold (NTC) operating region, while offering close to a super-threshold performance. However, process variation (PV) can drastically reduce the GPU performance at NTC. In this work, choke points—a unique device-level characteristic of PV at NTC—that can exacerbate the warp criticality problem in GPUs have been explored. It is shown that the modern warp schedulers cannot tackle the choke point induced critical warps in an NTC GPU. Additionally, Choke Point Aware Warp Speculator, a circuit-architectural solution is proposed to dynamically …