An analogy to understand supercomputers

This blog article aims to explain how supercomputers work in a comprehensive way, using the analogy of a town. A supercomputer can be seen as an entire town of business offices available for any computation contract. Read the article, which also includes an expert’s corner with an application to a real computer.

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Studying the geography of a software

Have you ever tried walking in a city you’re completely new to, without having any idea where you are or how it’s organized? Would it have been easier and taken less time and effort if you had a map in the first place? Then you could have memorized the general scheme of the city, how different parts of the town are linked with each other, and you could have focused on the parts of interest to you. The idea in software geography is the same: being a new developer to a software, you could either spend months reading it linearly before figuring out how certain blocks are linked together, and finally start building a mental map of it over years – or you could start with a map.

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Success Story: In situ VR visualisation of Nek5000 simulations with Vistle

Nek5000 cases that use Exascale level performance compute data on very large grids. Writing this data to disk frequently becomes a major run time bottleneck, while handling all the data on disk comes with its own challenges. With increasing data sizes and complexity analysing the usually 3D data with conventional 2D methods becomes even harder. Running large simulations is also costly, therefore errors should better be identified rather sooner than later.

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Success Story: Running AVBP Industrial code on Arm architectures

With the diversification of the micro-processor catalogue for High-Performance systems, porting and evaluating software performance on Arm-based architectures has become an imperative step for code developers. For core performance to multi-node scalability, real application benchmarks remain elusive. Given the myriad of Arm flavours available, a comprehensive real case benchmark would give developers and users a first look for the future usage of the European Processor Initiative (EPI) and Arm-based leadership class systems.
In collaboration with Arm Ltd., CERFACS has performed a first benchmark using the AVBP code, a state-of-the-art Navier Stokes solver on unstructured grids for reactive compressible flows written in Fortran and based on MPI for parallelism.

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Press release: EXCELLERAT CoE supports COVID-19-related research

A group of researchers from EXCELLERAT’s consortium partner SSC-Services GmbH, an IT service provider in Böblingen, Germany and the High-Performance Computing Center Stuttgart (HLRS) is supporting the German Federal Institute for Population Research (Bundesinstitut für Bevölkerungsforschung, BiB). SSC has developed an intelligent data transfer platform, which enables the BiB to upload data, start simulations and download results. The platform supports the work of BiB researchers in predicting the demand for intensive care units during the COVID-19 pandemic.

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