Myriam Peyrounette via petsc-users <petsc-users@mcs.anl.gov> writes: > Hi all, > > for your information, you'll find attached the comparison of the weak > memory scalings when using : > > - PETSc 3.6.4 (reference) > - PETSc 3.10.4 without specific options > - PETSc 3.10.4 with the three scalability options you mentionned > > Using the scalability options does improve the memory scaling. However, > the 3.6 version still has a better one...
Yes, this still looks significant. Is this an effect we can still reproduce with a PETSc example and/or using a memory profiler (such as massif or gperftools)? I think it's important for us to narrow down what causes this difference (looks like almost 2x on your 1e8 problem size) so we can fix.