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
Mr
Giovanni Alzetta
(SISSA)
Co-author
Prof.
Luca Heltai
(SISSA)
