That’s good to know. Thanks.
Simone

> On Apr 8, 2018, at 12:42 PM, Smith, Barry F. <bsm...@mcs.anl.gov> wrote:
> 
> 
> 
>> On Apr 8, 2018, at 11:39 AM, Rossi, Simone <sro...@email.unc.edu> wrote:
>> 
>> Thanks Barry,
>> That did it: I only had to specify KSPSetFromOptions() between 
>> KSPSetOptionsPrefix() and PCFieldSplitSetIS().
>> 
>> May I ask you how does that work? What do you mean by “depending on where 
>> you set the options prefix they may have different results”? I could not 
>> find a clear explanation in the documentation.
> 
>   The KSPSetFromOptions() uses the -current- list of options and -current- 
> values of prefixes (that is what the values are when the KSPSetFromOptions is 
> called). If you change and option or options prefix that change won't effect 
> anything unless you call the KSPSetFromOptions() after the change.
> 
> 
>   Barry
> 
>> 
>> Thanks again for the help,
>> Simone
>> 
>>> On Apr 8, 2018, at 12:24 PM, Smith, Barry F. <bsm...@mcs.anl.gov> wrote:
>>> 
>>> KSPSetFromOptions()
>> 
> 

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