[petsc-users] Prometheus vs GAMG for elasticity/plasticity problems

[Thomas Gross]

Please find enclosed the additional runs:

Prometheus:
-ksp_type cg -pc_type prometheus -log_summary -ksp_monitor -ksp_view -options_left -out_verbose 2 > Prometheus_verbose2.txt

GAMG:
-ksp_type cg -pc_type gamg -pc_gamg_type agg -pc_gamg_agg_nsmooths 1 -log_summary -ksp_monitor -ksp_view -options_left mg_levels_ksp_type richardson -mg_levels_pc_type sor -pc_gamg_verbose 2 > GAMG_Rich_max_it_verbose2.txt

-ksp_type cg -pc_type gamg -pc_gamg_type agg -pc_gamg_agg_nsmooths 1 -log_summary -ksp_monitor -ksp_view -options_left mg_levels_ksp_type richardson -mg_levels_pc_type sor -pc_gamg_verbose 2 -pc_gamg_repart true > GAMG_Rich_max_it_verbose2.txt


> And is this just a simple cube problem in elasticity as it looks like from your input file name?
The input is a cubic trabecular bone structure meshed with isotropic 8 node hexahedral finite elements (see attached cube_05.png). All elements were assigned the same elastic modulus and simulations were performed using small displacement formulation. 

Best regards,
Thomas



Am 31.01.2014 um 02:29 schrieb Mark Adams <mfadams at lbl.gov>:

> 
> 
> I meant that GAMG isn't using BAIJ, but Prometheus is.  That affects
> kernel efficiency.
> 
> 
> Ah yes, that must be it.  
> 

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