Colin,
Thanks for the info. We'll try to reorganize getting the memory size on the
Apple using your information and get it into a patch.
Barry
On May 23, 2013, at 4:11 PM, Colin McAuliffe <[email protected]> wrote:
> So after comparing the results of getrusage with guppy, a python memory
> profiling tool, it seems the os x getrusage is returning bytes in contrast to
> the os x man pages which say the results are in kb. Doing the same tests on a
> linux machine, it looks like getrusage is returning kb as it says in the
> documentation. Anyway it is not problem to correct the results of the petsc
> memory functions from my application code. Thanks for all your help!
>
> Colin
>
> Quoting Barry Smith <[email protected]>:
>
>>
>> On May 22, 2013, at 8:32 PM, Colin McAuliffe <[email protected]> wrote:
>>
>>> According to gdb the program goes here
>>>
>>> 110: #elif defined(PETSC_HAVE_TASK_INFO)
>>> 111: *mem = 0;
>>>
>>> The configuration flags from my petsc compilation indicate that both
>>> PETSC_HAVE_TASK_INFO and PETSC_HAVE_GETRUSAGE are 1. I'm not sure what
>>> have task info is supposed to do, is it safe to set it to 0 to see if this
>>> fixes the problem?
>>
>> Remove the PETSC_HAVE_TASK_INFO stuff completely and then rerun make
>> and see if it solves the problem.
>>
>> At some point the TASK_INFO stuff worked on the Apple some years ago,
>> perhaps they turned if off.
>>
>> Barry
>>
>>>
>>> Quoting Barry Smith <[email protected]>:
>>>
>>>>
>>>> On May 22, 2013, at 7:06 PM, Colin McAuliffe <[email protected]> wrote:
>>>>
>>>>> 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?
>>>>
>>>> You can run in the debugger, put a break point at that line to verify
>>>> it goes there and if it does check the values of temp after the call.
>>>> (Sometimes Apple's docs are more optimistic than reality.)
>>>>
>>>> Barry
>>>>
>>>>>
>>>>> 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 <[email protected]>:
>>>>>
>>>>>>
>>>>>> 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 <[email protected]>
>>>>>> 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
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> 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
