NEMO HPC WG: Mon 20 Sep 2021

0. Attendees

Andy Porter (STFC), Clément Bricaud (Mercator), Claire Lev (IPSL), Daley Calvert (MetOffice?), David Gubiert (Atos), Eloi Rodriguez Gaxas (BSC), Erwan Raffin (Atos), Ioan Hadade, Italo Epicoco (CMCC), Kristian Mogensen (ECMWF), Mario Acosta (BSC), Martin Schreiber (TUM ), Maff Glover (MetOffice?),

Maicon Faria (BSC), Michael Lange (ECMWF), Miguel Castrillo (BSC), Mike Bell (MetOffice?), Mirek Andrejczuk (MetOffice?), Nils Wedi (ECMWF), Peter Dueben (ECMWF), Samuel Hatfield (ECMWF), Sebastien Masson (IPSL), Stella Paronuzzi (BSC), Vineet Soni (Mercator).

1. Presentations

During the meeting we have discussed about the adoption and the maintainability of the Mixed Precision implementation of NEMO. Two presentations have been discussed:

• NEMO 4.0 performance evaluation on NEC SX-Aurora TSUBASA (Eric Maisonneive)
• Preliminary evaluation of impact of the tiling and loop fusion on the computational performance of NEMO 4.2rc: (Daley Calvert + Francesca Mele)

(see attached slides)

2. Discussion