Also, just to be 100% sure, is m and equal to 3 in 2 and 4 in 3D if my blocks are 3x3 and 4x4 respectively? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20221103/8e706322/attachment.html>