detailed error output for parameter sharing
detailed error output for parameter sharing

Reviewed By: xianjiec

Differential Revision: D6986239

fbshipit-source-id: 5b8bb06ea2383ce64318b5322bda7a58469f3eb0

xzturn/caffe2,Yangqing/caffe2,xzturn/caffe2,Yangqing/caffe2,xzturn/caffe2,xzturn/caffe2,Yangqing/caffe2,Yangqing/caffe2,Yangqing/caffe2,caffe2/caffe2,xzturn/caffe2