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?
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
