Fixes a memory leak when using OpenCL (2eb8d779) · Commits · 郑智淋 / lammps

The GPU package uses OpenCL events for measuring time. These have to be released to free up memory. I removed the clReleaseEvent() calls in the clear() method because in some cases they don't exist yet and I couldn't find a way to check for a valid event (clRetainEvent didn't work). This at least fixes the massive leak during simulations. See issue #1006

lib/gpu/geryon/ocl_timer.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -49,8 +49,6 @@ class UCL_Timer {
		inline void clear() {
		if (_initialized) {
		CL_DESTRUCT_CALL(clReleaseCommandQueue(_cq));
		clReleaseEvent(start_event);
		clReleaseEvent(stop_event);
		_initialized=false;
		_total_time=0.0;
		}
		@@ -107,6 +105,8 @@ class UCL_Timer {
		CL_SAFE_CALL(clGetEventProfilingInfo(start_event,
		CL_PROFILING_COMMAND_END,
		sizeof(cl_ulong), &tstart, NULL));
		clReleaseEvent(start_event);
		clReleaseEvent(stop_event);
		return (tend-tstart)*t_factor;
		}

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