[petsc-users] Fieldsplit on MATNEST

[Tang, Qi]

Hi,

I have a block matrix with type of MATNEST, but can I call -pc_fieldsplit_detect_saddle_point to change its IS? I assume it is not possible.

Also, I notice there is a small but important typo in the new fieldsplit doc:
https://petsc.org/release/manualpages/PC/PCFIELDSPLIT/
The first matrix of the full factorization misses A10. I believe it should be
[I -ksp(A00) A01]
[                I        ]

Best,
Qi
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