[petsc-users] On PCFIELDSPLIT and its implementation

[Edoardo alinovi]

Hi Matt,

it took a bit more than 1s, but I can reproduce the error in the
attached file.

To compile:
*mpifort -L$PETSC_DIR/$PETSC_ARCH/lib -lpetsc -fdefault-real-8 -o test
test.F90 -I$PETSC_DIR/include -I$PETSC_DIR/$PETSC_ARCH/include*

Please run it in serial as I have hardcoded some dimensions to code this up
faster.

Thank you!
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