1. My view of challenges faced by Open64 Xiaoming Li University of Delaware

2. Some new challenges Collective optimization – Multi-core and SIMD-like architectures ask for optimizations for a group of threads – New optimization goals Optimization for bandwidth – Description of resource confliction Explicitly managed hardware resources – Understanding and internal presentation of programmer's intention

3. My two cents Occupancy-oriented optimization on GPU – Achieve higher occupancy on GPU by “duplicating” code. Description of program execution context