Performance Tuning with the Roofline Model on GPUs and CPUs
TimeSunday, 14 November 20218am - 5pm CST
DescriptionThe Roofline performance model offers an insightful and intuitive method for extracting the key execution characteristics of HPC applications and comparing them against the performance bounds of modern CPUs and GPUs. Its ability to abstract the complexity of memory hierarchies and identify the most profitable optimization techniques has made Roofline-based analysis increasingly popular in the HPC community. The tutorial aims to highlight the fundamental aspects behind different Roofline modeling principles as well as provide several practical use case scenarios that highlight their efficacy for application optimization. This tutorial presents a unique combination of instruction to Roofline by its creator, hands-on instruction in using Roofline within Intel and NVIDIA production performance tools by Intel and NVIDIA staff, and discussions of real-world Roofline use cases at ALCF, NERSC and INESC-ID computing centers. The tutorial presenters have a long history of collaborating on the Roofline model and have presented several Roofline-based tutorials.