Hi all, I have a question on the example of step-31. When I ran the program, I found the processors worked pretty independently, or asynchronously -- from what I read in the output. The time step numbers can vary quite a lot on different processors. (I am assuming this is normal. please correct me if not.) However, each time step is determined by the CFL condition, which needs the global info of the velocity to get the maximal velocity. This would require the faster processors to wait for the slower ones to finish so that they can determine the next time step, which contradicts my observation. I would greatly appreciate your explanations or thoughts.
Thanks, Huan _______________________________________________ dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
