(temporary) workaround for memory leaks with OpenCL and MPI for upcoming stable release (923ae041) · Commits · 郑智淋 / lammps

lib/gpu/lal_device.cpp

+8 −0

Original line number	Diff line number	Diff line
		@@ -130,8 +130,16 @@ int DeviceT::init_device(MPI_Comm world, MPI_Comm replica, const int first_gpu,

		// Time on the device only if 1 proc per gpu
		_time_device=true;

		#if 0
		// XXX: the following setting triggers a memory leak with OpenCL and MPI
		// setting _time_device=true for all processes doesn't seem to be a
		// problem with either (no segfault, no (large) memory leak.
		// thus keeping this disabled for now. may need to review later.
		// 2018-07-23 <akohlmey@gmail.com>
		if (_procs_per_gpu>1)
		_time_device=false;
		#endif

		// Set up a per device communicator
		MPI_Comm_split(node_comm,my_gpu,0,&_comm_gpu);