[petsc-users] MatMPIBAIJSetPreallocationCSR i and j indices

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
> I found this discussion values(bs,nblockcols,bs,nblockrows) very
> confusing. MatMPIBAIJSetPreallocationCSR() doesn't take a square block
> of values so I didn't see what you are talking about. You must be
> talking about each internal call to
> MatSetValuesBlocked_MPIBAIJ(B,1,&row,ncols,icols,svals,INSERT_VALUES)
> where it puts in one block row of values with each call.

Yeah, or inserting an element matrix where you have several block rows.
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