From 3c6e08f4f776f64ed1436336a9567b9f254553cc Mon Sep 17 00:00:00 2001
From: Jerry Wu <wzhongyuan@gmail.com>
Date: Tue, 5 Dec 2017 02:05:32 -0600
Subject: [PATCH] Pb support bigmodel (#1976)

* support new format

* add unit test

* add unit test

* refinement

* fix typo

* fix unit test