Performance Evaluation and Analysis -- Evaluating On-Node GPU Interconnect for Deep Learning Workloads -- Comparison of Parallelisation Approaches,Languages, and Compilers for Unstructured Mesh Algorithms on GPUs -- Periodic I/O scheduling for super-computers -- A performance study of Quantum ESPRESSO's PWscf code on multi-core and GPU systems -- Section B: Performance Modeling and Simulation Modeling Large Compute Nodes with Heterogeneous Memories with Cache-Aware Rooine Model -- A Scalable Analytical Memory Model for CPU Performance Prediction -- Modeling UGAL on the Dragony Topology -- Resilient N-Body Tree Computations with Algorithm-Based Focused Recovery: Model and Performance Analysis -- Multi-fidelity Surrogate Modeling for Application/Architecture Co-design -- A Slurm Simulator: Implementation and Parametric Analysis -- Short Papers -- Path-synchronous Performance Monitoring in HPC Interconnection Networks with Source-code Attribution -- Performance and Energy Usage of Workloads on KNL and Haswell Architectures -- A survey of application memory usage on a national supercomputer: an analysis of memory requirements on ARCHER.  .