code: def calc_gflops(graph, feat_size, time):
      return round(graph.num_edges() * feat_size / 1000000000 / time, 2)
  
imports: import time
  import dgl
  import torch
  from ..None import utils
label_desc: Use image node_id 1 for calling a global function with example usage: calc_gflops(graph, feat_size, time) and returns: round