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Add no need output to gc check list #34754

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Merged
merged 4 commits into from
Aug 11, 2021
Merged

Add no need output to gc check list #34754

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56325af
add not used output var to gc_check_list; test=develop
phlrain Aug 10, 2021
6aee598
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
phlrain Aug 10, 2021
950755b
add useless output to gc check list; test=develop
phlrain Aug 10, 2021
4ff8213
Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into…
phlrain Aug 10, 2021
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11 changes: 11 additions & 0 deletions paddle/fluid/framework/new_exec.h
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Original file line number Diff line number Diff line change
Expand Up @@ -500,6 +500,17 @@ class InterpreterCore {
}
vec_instruction_[i].next_instruction_.direct_run_ = filter_next;

// checkout ouput
for (auto& item : vec_instruction_[i].output_index_) {
for (auto id : item.second) {
if (input_var2op_info_[id].size() == 0) {
// output var not be used by any kernel
vec_instruction_[i].gc_check_var_list.push_back(id);
global_scope.vec_meta_info_[id].var_ref_count_++;
}
}
}

for (auto inst_id : filter_next) {
dependecy_count_[inst_id]++;
}
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