[petsc-users] Measuring memory consumption

[Kraft, Pascal (IANM)]

Dear PETSc Users,


I use the MUMPS wrapper in PETSc (loaded from dealii). I know that MUMPS computes a factorization based on the mulrifrontal method and since I have a very memory-strapped problem, I would like to run some test on the memory requirements for the factorizations across some sets of parameters in my underlying FEM-problem.

My question is if there is a native way to check memory (as a measure of fill-in) for the MUMPS factorization in PETSc. I would prefer not to go through the operating system since that feels somewhat inconclusive to me. Does PETSc provide such functionality in any way?

I would prefer to know the memory consumption for storing the factorization if that is possible, I would also take the total memory consumption of the direct solver if there is no other way, and, if nothing else is possible, I guess I would have to go with the memory requirement of the whole application if all else fails.

Is anyone aware of something I can do?


Kind regards,

Pascal


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Karlsruhe Institute of Technology (KIT)
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Kraft, Pascal
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