On Wed, Mar 15, 2023 at 3:38 AM 권승리 / 학생 / 항공우주공학과 <[email protected]> wrote:
> Dear petsc developers. > > Hello. > I am trying to solve the structural problem with FEM and test parallel > computing works well. > > However, even if I change the number of cores, the total time is > calculated the same. > > I have tested on a simple problem using a MUMPS solver using: > mpiexec -n 1 > mpiexec -n 2 > mpiexec -n 4 > ... > > Could you give me some advice if you have experienced this problem? > If your problem is small, you could very well see no speedup: https://petsc.org/main/faq/#what-kind-of-parallel-computers-or-clusters-are-needed-to-use-petsc-or-why-do-i-get-little-speedup Thanks, Matt > Best regards > Seung Lee Kwon > -- > Seung Lee Kwon, Ph.D.Candidate > Aerospace Structures and Materials Laboratory > Department of Mechanical and Aerospace Engineering > Seoul National University > Building 300 Rm 503, Gwanak-ro 1, Gwanak-gu, Seoul, South Korea, 08826 > E-mail : [email protected] > Office : +82-2-880-7389 > C. P : +82-10-4695-1062 > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
