[petsc-users] PCFIELDSPLIT prefix

[Rossi, Simone]

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.

Thanks again for the help,
Simone

On Apr 8, 2018, at 12:24 PM, Smith, Barry F. <bsmith at mcs.anl.gov<mailto:bsmith at mcs.anl.gov>> wrote:

KSPSetFromOptions()

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