[petsc-users] Performance improvement (finite element model + slepc)

[Jose E. Roman]

El 20/06/2014, a las 18:15, jifeng zhao escribió:

> Hi Jose,
> 
> Thank you very much. The instruction you gave is of particular useful. I do think I can use deflation feature to reduce my subspace a lot. I will let you know if I made further progress.
> 
> One more thing to check with you. I am right now using bJacobi as preconditioner. I know it is among one of the simplest preconditioners, but it turns out it gives faster convergence than SOR (maybe ASM). Is Hypre or pARMS designed to be suited for FEM model, and will usually be faster than bjacobi?   
> 
> Since Hypre or pARMS is external packages not readily available in SLEPc, I need ask my server administrator to install it. So it is a not-so-easy job for me.
> 
> Thank you so much,
> Jifeng Zhao

I don't know if they will be faster than block Jacobi.
Jose