<div>I had also considered use max block size. But it is not efficient here.<br>Hope petsc support nonuniform block size one day.<br> <br></div><blockquote style="padding-left:5px;margin-left:5px;border-left:#a0c6e5 2px solid;margin-right:0px">I think you may choose the maximum block size as a BAIJ dimension. However ITSOL has variable BLOCK ILU routine which may help you BUT it is not paralleled.<br><br><a href="http://www-users.cs.umn.edu/%7Esaad/software/ITSOL/index.html">http://www-users.cs.umn.edu/~saad/software/ITSOL/index.html</a><br>
<br>B.B.<br><br>
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