New to LBM and OpenLB? Attend our upcoming one-week hands-on Spring School in Marseille/France from 19.05.2025 – 23.05.2025. OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › Bug Reports › MPI failed with 12 cores › Reply To: MPI failed with 12 cores August 29, 2019 at 2:37 pm #4531 EricParticipant Hi Adrian, Thank you for your reply! The program works totally fine now. Best regards, Eric