Yes, I also had the same feeling. But, when I look at the plot in the tutorial of step-40 for 52M Dofs, I see that they have solved the problem using just 32 processors also. Can you kindly let me know how much memory is available when you you run the problem on 32 processors? I get the memory error even when I use 80 processors (250 GB memory).
Thanks and regards Wasim Niyaz Research scholar CE Dept. IITM On Thu, 6 Apr, 2023, 9:21 pm Wolfgang Bangerth, <[email protected]> wrote: > On 4/6/23 01:31, Wasim Niyaz Munshi ce21d400 wrote: > > ** > > > > I tried to run step-40 with 52M DOFs on 32 processors. I am using > > *GridGenerator::subdivided_hyper_rectangle *to create a mesh with > > 5000*5000 elements. I have a single cycle in my simulation. However, I > > am running into some memory issues. > > I am getting the following error: *Running with PETSc on 32 MPI > > rank(s)...* > > *Cycle 0: > > > -------------------------------------------------------------------------- > > * > > *mpirun noticed that process rank 5 with PID 214402 on node tattva > > exited on signal 9 (Killed)*. > > I tried with 40 processors (125 GB RAM) but I am getting the same error. > > I'm pretty sure you run out of memory. You need a smaller problem, a > larger machine, or both. > > Best > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: [email protected] > www: http://www.math.colostate.edu/~bangerth/ > > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see > https://groups.google.com/d/forum/dealii?hl=en > --- > You received this message because you are subscribed to a topic in the > Google Groups "deal.II User Group" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/dealii/SP2s3PajYcY/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/08b5e423-617a-3df5-9075-a609c819ebba%40colostate.edu > . > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAM8ps5A9%3DPumDHxQB6g%3D6DHbOMY7KoXay3fhrjCK51At%3DunYhw%40mail.gmail.com.
