[petsc-users] multigrid_repartitioning

[Anton Popov]

Dear PETSc developers/users,

Does PETSc support repartitioning of coarse grid operators onto a 
smaller subset of processors during coarsening? Or the coarsest grid 
must be represented on the same amount of processors as the finest? It 
becomes a problem when a lot of processors are employed (say 4096 or 
more). If it is supported, how can I use it?

Thank you,

Anton Popov