title: Memory not getting reclaimed on restart of a process
body: <p>I have a python job that runs a caffe net for image processing on nvidia GPUs. The job takes images from a rabbitmq queue, processes it and then writes the result in another queue. When I restart this job, the processes are getting killed but memory is not getting reclaimed.</p>
  
  <p>So after certain number of restarts the machine crashes. Once I kill the job there is no python process running in ps or top but the CPU memory is not getting reclaimed. </p>
  
  <p>How can I debug this issue?</p>
  
  <p>EDIT: CPU memory</p>