Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › 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