I'm interested in MPICH internal allocation. I'm trying to figure out all the places in BGQ-MPI where O(p) memory is required. Jeff On Fri, Feb 22, 2013 at 9:28 AM, Jim Dinan <[email protected]> wrote:
Jeff,
Which memory are you interested in -- memory the application allocates, or memory that MPICH allocates? If the former, you can use the PMPI interface to hook MPI_Alloc/Free_mem. If you are interested in MPICH internal memory use, Dave can probably give the most informed answer. I would probably just modify MPIU_Malloc.
~Jim.
On 2/22/13 8:44 AM, Jeff Hammond wrote:
Is there any documentation of how to properly instrument MPICH with memory profiling? I understand MPIU_MALLOC allows me to do this.
My goal is to merely print out every time memory is allocated larger than a particular size. I'd also like the rank to show up in the output.
Please RTM me if the M exists. Source comments are also a good M if they are correct and sufficiently complete.
Thanks!
Jeff
-- Jeff Hammond Argonne Leadership Computing Facility University of Chicago Computation Institute [email protected] / (630) 252-5381 http://www.linkedin.com/in/jeffhammond https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond