[mpich-discuss] How to know total memory allocated by MPICH at a certain time?
jczhang at mcs.anl.gov
Mon Jun 3 15:56:01 CDT 2019
Is there a way for users to know total memory allocated by MPICH at a certain time? I am asking that since I want to know the difference of this value before/after a user function. The function is quite complex and calls many other functions.
The background is that a PETSc user claimed a PETSc routine increased RSS (resident set size) periodically when running with MPICH, but not with OpenMPI. The application itself is valgrind clean and has no memory leaks.
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