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Numerical Weather Prediction - Facing the Future with C++

CppNow via YouTube

Overview

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This course aims to teach learners about the challenges and solutions in modernizing software stacks for Numerical Weather Prediction (NWP) using C++. The learning outcomes include understanding the data-intensive nature of NWP, the need for modern software techniques for many-core hardware, and the development of a C++ Domain Specific Embedded Language (DSEL) for parallel processing of meteorological data. The course covers topics such as model scalability, electrical power limits, data I/O rates, and the use of high-performance languages like C++. The teaching method involves presenting solutions to address the challenges faced by the NWP community, with a focus on functional programming and building pipelines for data processing. This course is intended for scientists and professionals in the field of meteorology who are interested in leveraging C++ for NWP software development.

Syllabus

Intro
Overview
Who are we and what do we do?
A basic description of our models
Major assimilated datasets
4D-Var Assimilation
Data Assimilation
Model Levels
Operational model grid
Grid Effect
Meteorological Fields
Chaos and weather prediction
RMDCN Connections
New Algorithms Challenge
Evalution of ECMWF scores comparison northern and southern hemispheres
Benefits of High Resolution
Planned Resolution Upgrades
Power Challenge
Platform Uncertainty Challenge
Power Matters
Hypothetical Solution
HPC Platform Restrictions
C++ Support on HPC
Scientists are reluctant to use C++
Big Data Challenge
Vis for Volume: Observations
Vis for Volume: Archive
CPU Power Growth
CPU Performance Growth (single-threaded)
Storage Density Growth Multiple Technologies
HDD Storage Growth
What does it imply?
Meteorological Archival and Retrieval System
MARS 2011 Migration
A meteorological language
Current IFS Model
Atlas capabilities
So what about Fortran?
C++ contains implementation
Fortran/C interface
Fortran Program
A look at the data-chain
Observations & Fields: Some similarities
Requirements
Use Case: Product Generation
Use Case: Observation Filters
Use Case Workstation Interpolation & Visualisation
Hermes

Taught by

CppNow

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