Is there any way to find element neighbors with in a particular *radius*
from its center? One approach is to compare distance with every other
element in the whole mesh but then the algorithmic complexity will be
O(N^2). Another approach is to map all the elements to a coarse structured
grid wi
I installed Spack package of Dealii on a machine with 32 cores (48 virtual
cores) and ran a petsc-parallel code. If I run using only one MPI process,
then I only get one core running for the solver part. Shouldn't it use all
the available cores within a node? I think its installed with MPI only
