Jul 23 – 27, 2018
SISSA Main Building
Europe/Rome timezone

Non matching grids in a distributed setting

Jul 25, 2018, 11:00 AM
20m
Meeting Room -- VII Floor (SISSA Main Building)

Meeting Room -- VII Floor

SISSA Main Building

Via Bonomea 265 34136 -- Trieste -- Italy
Contributed talks Users' track Contributed talks

Speaker

Mr Giovanni Alzetta (SISSA)

Description

I am beginning this talk with a quick recall of the general difficulties faced when using multiple grids on a distributed memory setting and some possible solutions. As a model problem I am presenting briefly the Lagrange-multiplier method of step-60, where a harmonic equation with values prescribed at the boundary and on a sub-domain is solved, with a particular focus on the coupling matrix used. After discussing how a partial solution making use of bounding boxes was implemented in deal.II 9.0, I am discussing its current limitations and intended developements.

Primary author

Co-author

Prof. Luca Heltai (SISSA)

Presentation materials