Some questions about GSN

[Jamesswang]

What does summ_mats stand for in GSN and where is it instantiated？

[hongzimao]

It stands for "summarization matrix". It's responsible for the DAG level and global level aggregation (i.e., determines which nodes to aggregate), which are the square and triangle in Figure 5(b) of the paper.

The parameter is determined by the DAG structure and by which nodes are still active (i.e., contain runnable tasks). We compute it here: https://github.com/hongzimao/decima-sim/blob/master/actor_agent.py#L484-L485, which is defined at:

decima-sim/msg_passing_path.py

Line 243 in c010dd7

def get_unfinished_nodes_summ_mat(job_dags):