Samuel Hatfield

Computational Scientist
Computing Department, HPC Section, HPC Applications Group

Summary:

Sam joined ECMWF in October 2019 shortly after completing his PhD with Tim Palmer and Peter Dueben at the University of Oxford. Sam's work spans numerical methods and high-performance computing within numerical weather prediction. He is principally responsible for the implementation of single-precision arithmetic in the ocean model NEMO at ECMWF. He has also been closely involved with the efforts to port the ECMWF model, the IFS, to novel high-performance computing architectures, including Fugaku and Summit.

Professional interests:
  • Floating-point arithmetic in high-performance numerical weather prediction
  • Algorithmic design and efficient execution of spectral transforms
  • Portability of large Fortran codebases across a variety of heterogeneous supercomputing architectures
  • Open-source software in the geosciences
Career background:

DPhil in Environmental Research, University of Oxford (NERC Environmental Research Doctoral Training Partnership), 2015-2019

  • Thesis title: Reduced-precision arithmetic in numerical weather prediction with an emphasis on data assimilation
  • Supervisors: Prof. Tim Palmer, Dr. Peter Dueben

MSci in Physics, University of Bristol, 2010-2014

  • First-class honours
  • Final year project title: Knots in geometrically-confined polymers: nanochannels and other geometries
  • Final year project advisor: Dr. Simon Hanna