Dear Firedrake -- When I run the demo code https://www.firedrakeproject.org/demos/geometric_multigrid.py.html I get output with the warning firedrake:WARNING Creating new TransferManager to transfer data to coarse grids firedrake:WARNING This might be slow (you probably want to save it on an appctx) The same warning appears for my own codes, which often use -pc_type mg. This is new behavior for me, i.e. as of a firedrake update about 2 months ago. How should I update this demo to avoid the warning message? Is there an example where it is added to an appctx? I'm curious about the cause of the warning, because I would not want mesh-specific info in a PETSc appctx, generally, I think ... Thanks! Ed -- Ed Bueler Dept of Mathematics and Statistics University of Alaska Fairbanks Fairbanks, AK 99775-6660 306C Chapman