[Trilinos-Users] About the GCRODR solver in Belos
wenyan4work at gmail.com
Tue Jan 10 11:35:31 EST 2017
I am curious about a scenario of the recycled Krylov method GCRODR in
Belos. If I need to solve about 20 linear systems successively:
A x0 = b
A x1 = x0
A x2 = x1
A x20 = x19
where A and b are known, and an effective preconditioner for A is
available. A is not symmetric, and not necessarily positive-definite. x0 to
x20 are to be solved. Simple GMRES in Belos works fine for me in this case,
takes about 10~20 iterations per equation.
For this scenario is GCRODR a possible improvement over simple GMRES?
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Trilinos-Users