refine logic

7 years ago · 1076e85135
parent 8291b916d6
commit 1076e85135
1 changed files with 2 additions and 0 deletions
--- a/paddle/fluid/framework/details/ssa_graph_builder.cc
+++ b/paddle/fluid/framework/details/ssa_graph_builder.cc
@ -135,9 +135,11 @@ bool SSAGraphBuilder::IsValidGraph(const SSAGraph *graph) const {

  while (!pending_vars.empty()) {
    run_all_ops(ready_ops);
+
    if (ready_vars.empty()) {
      return false;
    }
+
    for (auto ready_var : ready_vars) {
      pending_vars.erase(ready_var);
      for (auto *op : ready_var->pending_ops_) {