OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Annotation of `olb::LoadBalancer::_size` › Reply To: Annotation of `olb::LoadBalancer::_size` May 19, 2023 at 8:57 am #7467 AdrianKeymaster _size is indeed the number of cuboids assigned to the current MPI process (the “thread” naming in the legacy comments is also misleading). Thanks for reporting this.