[aspect-devel] "Not converge" problem with variable viscosity.
heister at clemson.edu
Fri Sep 4 14:24:12 PDT 2015
(yes, back to the mailing list)
summarizing some more information that Shangxin sent offline to me:
./ depth dependent profile from a file needs to be formatted correctly
(was only checked in debug mode, see
./ Timing information for a typical run:
Stokes Solver takes most of the time as below:
| Solving Stokes system | 1 | 1.1e+04 s | 70 %|
| Initialization | 2 | 4.43e+03 | 28 % |
Most of the time is spent in the Stokes solver, but initialization of
RTS40 initial condition is still way too expensive to be used in such
a large computation.
./ More statistics:
# 4: Number of Stokes degrees of freedom 79'283'080
# 7: Iterations for Stokes solver 576
# 8: Velocity iterations in Stokes preconditioner 11'835
# 9: Schur complement iterations in Stokes preconditioner 6848
The linear solver is certainly worth looking into. I will report back.
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