Department of Computer Science
Benchmarking the memory hierarchy of modern GPUs
Memory access efficiency is a key factor for fully exploiting the computational power of Graphics Processing Units (GPUs). However, many details of the GPU memory hierarchy are not released by the vendors. We propose a novel fine-grained benchmarking approach and apply it on two popular GPUs, namely Fermi and Kepler, to expose the previously unknown characteristics of their memory hierarchies. Specifically, we investigate the structures of different cache systems, such as data cache, texture cache, and the translation lookaside buffer (TLB). We also investigate the impact of bank conflict on shared memory access latency. Our benchmarking results offer a better understanding on the mysterious GPU memory hierarchy, which can help in the software optimization and the modelling of GPU architectures. Our source code and experimental results are publicly available. © 2014 IFIP International Federation for Information Processing.
Source Publication Title
Network and Parallel Computing: 11th IFIP WG 10.3 International Conference, NPC 2014, Ilan, Taiwan, September 18-20, 2014. Proceedings
Springer Berlin Heidelberg
Mei, Xinxin, Kaiyong Zhao, Chengjian Liu, and Xiaowen Chu. "Benchmarking the memory hierarchy of modern GPUs." Network and Parallel Computing: 11th IFIP WG 10.3 International Conference, NPC 2014, Ilan, Taiwan, September 18-20, 2014. Proceedings (2014): 144-156.