[petsc-dev] -pc_factor_drop_tolerance

Hong Zhang hzhang at mcs.anl.gov
Fri Mar 26 11:15:19 CDT 2010


I stripped off ilu/icc drop tolerance from user opitons and manual
in the release. Let me know if any of it remains.


On Mar 22, 2010, at 2:51 PM, Jed Brown wrote:

> On Mon, 22 Mar 2010 14:36:50 -0500, Barry Smith <bsmith at mcs.anl.gov>  
> wrote:
>>    You should consider that PETSc currently has no drop tolerance
>> factorizations; what is in the source code is just partial code and
>> partial place holders.
>> We could add this to the manual pages.
> There is a man page for PCFactorSetDropTolerance, the user's manual
> discusses it, and the option is available in -help.  I'm just pointing
> out that this is fairly confusing.  The manual also mentions
> PCFactorDTSetReuseFill which does not currently exist.
> There seems to be something available with -pc_type icc
> -pc_factor_mat_solver_package bas, but this is actually undocumented  
> so
> I'm not concerned about whether or not it works.
> Jed

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