今日目标：
上午
下午
- 1
- debug direct impl: msbfs
晚上
1
- run msbfs 看下是不是比之前的Neighbors实现快
- code direct impl: msbfs_merge
2
- code and test and run direct impl: msbfs_merge
- operf msbfs_merge see bottle neck
3
- code direct impl: msbfs_1step2
4
- code direct impl: msbfs_1step2
5
- debug direct impl: msbfs_1step2
6
- debug direct impl: msbfs_1step2
baseline opt
