[petsc-users] BDDC assembly question

[Hoang Giang Bui]

Hello

I obtained two different matrices when assembling with MATIS and MATMPIAIJ.
With MATIS I used MatISSetPreallocation to allocate
and MatSetLocalToGlobalMapping to provide the mapping. However I still used
MatSetValues and MatAssemblyBegin/End with MATIS. Is it the correct way to
do so? In case that BDDC required assembling the matrix using local index,
is there a way to assemble using global index to keep the same assembly
interface as MATMPIAIJ?

Thanks
Giang
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