[petsc-users] Memory logging in fortran

[Colin McAuliffe]

Hi Barry, thanks for the quick response.

I am using os x and so I would expect that petsc would be able to use  
getrusage in the following lines of mem.c:

115: #elif defined(PETSC_HAVE_GETRUSAGE)
116:   getrusage(RUSAGE_SELF,&temp);

Is this not the case?

Here is the link to apple's getrusage manual page
http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/10.7/man2/getrusage.2.html

Quoting Barry Smith <bsmith at mcs.anl.gov>:

>
>    Colin,
>
>     PetscMemoryGetCurrentUsage() and MaximumUsage() us calls to the   
> underlying operating system to get how much memory the process is   
> using, as such they will also include external package memory.   
> Unfortunately it depends on the operating system providing this   
> information and often it does not, this is why you get 0. If you are  
>  a hacker you could look at the source for   
> PetscMemoryGetCurrentUsage() and see how to get the information for   
> your OS and add it to this routine.
>
>    Barry
>
>
>
> On May 22, 2013, at 6:31 PM, Colin McAuliffe <cjm2176 at columbia.edu> wrote:
>
>> Hi all,
>>
>> When calling PetscMemoryGetCurrentUsage or   
>> PetscMemoryGetMaximumUsage in a fortran code the memory usage   
>> returned is always zero. Adding command line options such as   
>> -malloc_log and -memory_info doesn't change this result. Is there   
>> something else I'm missing? Also, will use of these two functions   
>> give memory used by external packaged called by petsc?
>>
>> All the best,
>> Colin
>>
>> --
>> Colin McAuliffe
>> PhD Candidate
>> Columbia University
>> Department of Civil Engineering and Engineering Mechanics
>
>
>



-- 
Colin McAuliffe
PhD Candidate
Columbia University
Department of Civil Engineering and Engineering Mechanics