MeteoCommunity/Meeting-2021-11-12

Workshop committee

Xiaohua Yang <xiaohua@dmi.dk> Tomas Karlsson <Tomas.Karlsson@smhi.se> Martin Lilleeng Sætra <martinls@met.no> Ingvar <ingvar@vedur.is> Niko Sokka <niko.sokka@fmi.fi> Dan Still <dan.still@csc.fi>

Martin:

People from different projects that has been working on porting to GPUs and and get their stories on how how they got started? What type of tools they're using and and how they're working and so on. Meteo Swiss Cosmo GPU model would be good candidate. Think and you also have the.Elfric(?) project at the Met Office. And there's a big infrastructure project in the NOR-ESM The climate model where there's also. A work package geared towards making the model able to utilise GPU. work group in the Accord Consortium on utilising GPUs, so that's at least four different candidates to come and present and get discussions going, Getting input from from other projects in different phases and Other area would be the vendors like NVIDIA and AMD, and particularly AMD since Lumi has AMD GPUs. NVIDIA have had almost a monopoly on GPU computing for 10-15 years and maybe more so, so it would be nice to to get some input as to how to efficiently develop code to run on AMD GPUs, and then porting from existing NVIDIA GPU codes, but also actually implementing new code on AMD GPUs, The type of ecosystem. What types of tools and libraries and 3rd party libraries are actually available? For for the first workshop so.

Xiaohua:

We are fitting for this rule of working with digital twins for extreme Extreme weather and there we should align our solutions with global models. My understanding is that the ECMWF had had some source that they seem to be more tilted toward the use of Leonardo. We we might need to open to to different architectures in EuroHPC context So question is, is there expertise or working on these issues from the countries outside the Nordic countries? Can we invite expertise also from these countries.

Niko:

DestinE people are quite scattered would be interesting to get people from the DestinE teams

Ingmar:

Info on vendor roadmaps and technology progression. Supply chain issues

Thomas:

All Martins topics were really good, adding to that if someone has looked into more GPU agnostic code. Cosmo code is Nvidia based, scalability program at ECMWF - researching out to Peter Bauer ELFRIC(?) project Machine learning

Dan:

Machine learning planned for third workshop

Next steps:

Videopresentation in early January

1st or 2nd week in March for workshop

No meeting before video, Nvidia

DestinE proposal teams drafting the proposals would be interested to hear about LUMI

LUMI presentation

Marketing good connections or channels could be DMI has mailing list few hundred

Pekka Manninen(?) to give a presentation in January potentially already in December but not right before Christmas

Try to get the guys from Italy to come and present Leonardo First or second week of March for Workshop Wed-Thu possible