Hackathon Welcome Room: Brookhaven National Laboratory

Safety Briefing Room: Brookhaven National Laboratory

Porting and Optimizing Applications for AC922 servers using OpenMP and Unified Memory

• Leopold Grinberg (IBM)

Room: Brookhaven National Laboratory OpenPOWER Newell systems (AC922) leverage heterogeneity in the compute elements and memory types to deliver high performance in both Technical Computing (HPC) and Cognitive applications, while offering a wide variety of programming models. In this talk we will review implementations and performance optimizations for code regions where tight integration between the CPU cores and GPUs as well between the CPU and GPU memories is required. We will focus on programming with OpenMP4.5 directives and use of the Unified Global Address Space, we will review code samples and discuss strategies in implementing functions for inter-node communication and support for applications requiring large memory footprint.