[petsc-users] Non conforming object sizes

[Thomas DE-SOZA]

Dear PETSc users,

We're having difficulties troubleshooting some developments in our code 
that relies on PETSc. We're assembling a matrix of size 90 with the 
blocksize set to 6, the code is run on two processors so that processor #0 
has 48 entries and #1 has 42 entries.
During the MatAssemblyEnd, an error about non conforming object sizes is 
thrown ("Local scatter sizes don't match"). This is raised by 
VecScatterCreate inside MatAssemblyEnd.

We're likely doing something wrong but what would be the way to debug this 
since the call to VecScatterCreate is not controlled directly by us ? 
Attached is the output of '-info' during the MatAssemblyEnd.



Note : we're still using PETSc 3.2p7 and have not moved to 3.4.

Thanks,

Thomas
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