PCGetType question

[Vijay S. Mahadevan]

Hi all,

 

I’ve been trying to figure out how exactly to find out the PCType for a
given PC context. Here’s the sample code I’ve been trying to execute but to
no avail.

 

Method 1:

 

PetscTruth isshell ;

                        

PetscTypeCompare((PetscObject)pc, PCSHELL, &isshell);

                        

PetscPrintf(PETSC_COMM_SELF, " PETSC_IS_SHELL = %D", isshell) ;

 

Result: The isshell variable is always false even when I set –pc_type shell
option. Why ?

 

Method 2:

 

PCType currpcType ;

 

ierr = PCGetType(pc, &currpcType) ;

 

if(currpcType == PCSHELL)

    isshell = PETSC_TRUE ;

 

PetscPrintf(PETSC_COMM_SELF, " PETSC_IS_SHELL = %D", isshell) ;

 

Result: Again, the isshell variable is always false even when I set –pc_type
shell option. Also, my currpcType string is a null string. 

 

Any ideas on what I am doing wrong on either one of these cases. I just
spent a while trying to figure out if there was a bug in some other part of
my code while the isshell variable is never set in the first place. Any help
would be appreciated.

 

Thanks,

Vijay 

 


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