Hi Stefan (and Steven who reported this earlier with CUDA-aware program)
I have managed to observed the leak when running LAMMPS as well. Note that this has nothing to do with CUDA-aware features. I am going to move this discussion to the Open MPI developer’s list to dig deeper into this issue. Thanks for reporting. Rolf From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Stefan Paquay Sent: Wednesday, July 01, 2015 11:43 AM To: us...@open-mpi.org Subject: Re: [OMPI users] 1.8.6 w/ CUDA 7.0 & GDR Huge Memory Leak Hi all, Hopefully this mail gets posted in the right thread... I have noticed the (I guess same) leak using OpenMPI 1.8.6 with LAMMPS, a molecular dynamics program, without any use of CUDA. I am not that familiar with how the internal memory management of LAMMPS works, but it does not appear CUDA-related. The symptoms are the same: OpenMPI 1.8.5: everything is fine OpenMPI 1.8.6: same setup, pretty large leak Unfortunately, I have no idea how to isolate the bug, but to reproduce it: 1. clone LAMMPS (git clone git://git.lammps.org/lammps-ro.git<http://git.lammps.org/lammps-ro.git> lammps) 2. cd src/, compile with openMPI 1.8.6 3. run the example listed in lammps/examples/melt I would like to help find this bug but I am not sure what would help. LAMMPS itself is pretty big so I can imagine you might not want to go through all of the code... ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------
