title: What is the difference of SGDSolver and get_solver method in pycaffe?
body: <p>I'm trying to implement DNN (mnist) on pycaffe.</p>
  
  <p><code>pretrained_solver = caffe.SGDSolver('mnist/lenet_solver.prototxt')</code></p>
  
  <p><code>pretrained_solver = caffe.get_solver('mnist/lenet_solver.prototxt')</code></p>
  
  <p>What is the difference between the two lines above?
  It seems that I get the same result with either of the lines...</p>