On Apr 4, 2012, at 9:16 PM, Jed Brown wrote: > On Sat, Mar 31, 2012 at 20:03, Barry Smith <bsmith at mcs.anl.gov> wrote: > For non-blocked matrices you can call MatSetBlockSize() anytime (as with > vectors changing the blocksize later will also change the block size of any > other vectors/matrices that share the layout) , for blocked matrices you > CANNOT ever call MatSetBlockSize() and must set it with the appropriate > preallocation routine. > > Not quite. You can set the block size for BAIJ, but it just checks that it > matches the block size used for preallocation and errors if not.
And this makes a difference how?