[petsc-users] About bcgs and Viewer

[Barry Smith]

   This issue has been fixed with the 3.4 release of PETSc.

   Barry

On Aug 11, 2013, at 2:21 PM, Lu Qiyue <luqiyue at gmail.com> wrote:

> Dear All:
> I am using 
> /petsc-3.3-p6/src/ksp/ksp/examples/tutorials/ex10.c.html
> as the driver to calculate a Ax=b system.
> In the job submit line, I am using:
> ./ex10 -f input.petsc.bin -ksp_type bcgs -ksp_rtol 1.e-5 -ksp_max_it 40000 -ksp_monitor -table
> 
> Then I got the error message:
> 
> [0]PETSC ERROR: No support for this operation for this object type!
> [0]PETSC ERROR: Viewer type string not supported for KSP cg!
> 
> Looks bcgs is not compatible with -table option. Because in ex10.c mentioned above, -table has viewer operations.
> 
> And I used cg and cr, both work.  
> ./ex10 -f input.petsc.bin -ksp_type cg -ksp_rtol 1.e-5 -ksp_max_it 40000 -ksp_monitor -table
> 
> ./ex10 -f input.petsc.bin -ksp_type cr -ksp_rtol 1.e-5 -ksp_max_it 40000 -ksp_monitor -table
> 
> So, How could I get the iteration time and other information for bcgs option?
> 
> Thanks
> 
> Qiyue Lu