Thank you everybody, number of iterations seems now to be under control, I'll run some scaling test and hope for the best.
On Monday 29 September 2014 16:02:24 Jed Brown wrote: > Matthew Knepley <[email protected]> writes: > >> Matrix free you mean AMG (like -pc_mg_galerkin)? Does it reach the same > >> scalability as GMG? > > > > No, Jed means calculating the action of the operator matrix-free instead > > of > > using > > an assembled sparse matrix. > > Yeah, that was a diversion; don't worry about it for now. HPGMG is an > example of an optimized parallel matrix-free geometric multigrid solver. Now I am intrigued, is there, by any chance, any reference I can look up for this?
BEGIN:VCARD ADR;TYPE=work:;;Filippo Leonardi\nSeminar für Angewandte Mathematik\nRämi strasse 101\nCH-8092 Zürich - Switzerland;Zürich;Zürich;8092;Switzerlan d EMAIL:[email protected] FN:Filippo Leonardi N:Leonardi;Filippo;;; NOTE:Filippo Leonardi\nSeminar für Angewandte Mathematik (D-MATH ETHZ)\nHG J 45 - Rämistrasse 101\nCH-8092 Zürich - Switzerland\nPhone (+41) 44 63 3 9379\nFax: (+41) 44 632 1104 ORG:ETHZ;D-MATH TEL;TYPE=WORK:(+41) 44 633 9379 UID:c183bf29-7263-4615-9b41-bfc8dc873a4a VERSION:3.0 X-KADDRESSBOOK-X-Office:HG J 45 END:VCARD
