[petsc-users] KSP solver iteration stop criteria

Jed Brown jed at jedbrown.org
Fri Feb 14 13:13:31 CST 2014

Barry Smith <bsmith at mcs.anl.gov> writes:
> -ksp_norm_type unpreconditioned  -ksp_set_pc_side right 
> Don’t include the -ksp_set_pc_side right if you are using CG.

You can just leave it off all the time.  Just request unpreconditioned
norm and the PC side will be figured out automatically.
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