[petsc-users] Bad memory scaling with PETSc 3.10

[Jed Brown]

It may not address the memory issue, but can you build 3.10 with the
same options you used for 3.6?  It is currently a debugging build:

              ##########################################################
              #                                                        #
              #                       WARNING!!!                       #
              #                                                        #
              #   This code was compiled with a debugging option.      #
              #   To get timing results run ./configure                #
              #   using --with-debugging=no, the performance will      #
              #   be generally two or three times faster.              #
              #                                                        #
              ##########################################################