Hello,
I am trying to profile Petsc memory usage with massif, but
have been getting absurdly low values.
I have valgrind-devel installed, and compiled PETSc with both valgrind
and debugging options set to 1. I then compiled my executable which
has PETSc as a dependent library.
I ran valgrind with the following command: valgrind
--trace-children=yes --tool=massif --massif-out-file=<outfile>
<executable>
However, the output from valgrind in terms of total memory usage is
absurdly low (612 kb) and remains the same whether I compiled PetSc with or
without valgrind.
KB
612.0^ :
| #############::::::::::::::::::::::::::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : ::
| # : : :::
| # : : :::
| @# : : :::
| @@# : : :::
| @@:::@:@::@@@@# : : :::
0 +----------------------------------------------------------------------->Mi
0 1.474
I suspect that valgrind is not actually able to get PETSc's memory
usage. Any ideas on how to get valgrind to give me the actual memory
consumed by PETSc would be helpful.
Thanks.
Vikram Garg
vikramvgarg.github.io/
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