[petsc-dev] Getting Petsc memory in use over time

[Jacob Faibussowitsch]

>  but it does report the peak usage.

On default -log_view? Or is it another option? I have always been using the below from -log_view, I always thought it was total memory usage.

Memory usage is given in bytes:

Object Type          Creations   Destructions     Memory  Descendants' Mem.
Reports information only for process 0.

--- Event Stage 0: Main Stage

         Matrix                    11             11        38060     0.
         Vec Scatter             3              3         2400       0.
         Vector                     6              6         9776       0.
         Index Set              12             12        10776     0.
         Star Forest Graph   3              3         3360       0.
         Viewer                     4              3         2520       0.


Best regards,

Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)
Cell: (312) 694-3391

> On Apr 1, 2020, at 11:56 AM, Jed Brown <jed at jedbrown.org> wrote:
> 
> PETSc does not have this type of memory tracing, but it does report the peak usage.
> 
> Jacob Faibussowitsch <jacob.fai at gmail.com> writes:
> 
>> Hello all,
>> 
>> Is there a way to get memory usage in time from petsc? I know using -log_view gives you total amount of memory usage by the end of the program, but I'm interested in finding the point in time when petsc has the most _concurrently_ allocated amount of memory. It's fine if petsc allocated say 300 petabytes of memory over the program lifetime but it is useful to see when petsc is at its most memory intensive. Valgrind has the "--tool=massif" tool for this but I'm wondering if petsc has an in-house version.
>> 
>> Best regards,
>> 
>> Jacob Faibussowitsch
>> (Jacob Fai - booss - oh - vitch)
>> Cell: (312) 694-3391

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