[petsc-users] MatMPIBAIJSetPreallocationCSR i and j indices

[Barry Smith]

On Sep 29, 2013, at 11:56 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> 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.

  But that has absolutely nothing to do with MatMPIBAIJSetPreallocationCSR().