leave my rows alone

[Thomas Geenen]

dear petsc users,

is there a way to prevent Petsc during the assembly phase from redistributing 
matrix rows over cpu's ?? i like the way the rows are assigned to the cpu's 
during the setvalues phase.  
apparently petsc assigns the first nrows to cpu0 the second nrows to cpu1 etc.
I could of course renumber my matrix but I would rather convince petsc that it 
should keep the distribution of the matrix rows.

tia
Thomas