I agree with these statements, Martin. I would also recommend serious profiling on a range of problems before substantial reengineering.
On Mon, Mar 23, 2009 at 8:18 AM, Martin Sandve Alnæs <[email protected]>wrote: > On Mon, Mar 23, 2009 at 1:58 PM, A Navaei <[email protected]> wrote: > > 2009/3/23 Robert Kirby <[email protected]>: > >> Hi all, some thoughts: > >> 1.) In the current paradigm (build + apply), building the matrix is > >> typically not dominant in the overall run-time. > > > > Isn't this in contrast with what Kent said about matrix insertion > > being the bottleneck? Are there any references for these claims? > > Matrix insertion is the bottleneck during the > assembly of matrices from simple PDEs > (at least simple ones). > > Depending on the application, other parts like the > linear solver are often more costly than the assembly. > > Both these claims are easy to verify. > > Martin >
_______________________________________________ DOLFIN-dev mailing list [email protected] http://www.fenics.org/mailman/listinfo/dolfin-dev
