[petsc-users] _pc_type

[Qiyue Lu]

Dear All:
When I am solving a linear system. in command line I use:
-ksp_type=cr 
then in the output file: 
I have : job75557 7959 5e+00 2.8e+02 1.0e-01 2.8e+02  bjacobi blks=128 ilu     lvls=0,order=natural

When I am using: 
-ksp_type cr _pc_type bjacobi
the output file looks the same. 

From the driver source code: 
bjacobi blks=128 ilu
is the kspinfo output. 

I am wondering, Does this mean that bjacobi is the default preconditioner for cr? 


Thanks

Qiyue Lu



 		 	   		  
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