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[Inference] fix preln_residual_bias_fuse_pass bug in TNT_small model #46178

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Merged
qingqing01 merged 2 commits into from
Sep 20, 2022
Merged

[Inference] fix preln_residual_bias_fuse_pass bug in TNT_small model #46178

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zhoutianzi666 Sep 19, 2022
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zhoutianzi666 Sep 19, 2022
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11 changes: 11 additions & 0 deletions paddle/fluid/framework/ir/preln_residual_bias_fuse_pass.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -164,6 +164,17 @@ void PrelnResidualBiasFusePass::ApplyImpl(ir::Graph *graph) const {
GET_IR_NODE_FROM_SUBGRAPH(layer_norm_mean, layer_norm_mean, fused_pattern);
GET_IR_NODE_FROM_SUBGRAPH(
layer_norm_variance, layer_norm_variance, fused_pattern);

// We can not accept that two or more layer_norm is connected to
// elementwise1_out. This will lead to two or more PrelnResidualBias
// patterns is found near elementwise1_out, and these patterns will interact
// on each other.
int num_layer_norm = 0;
for (auto op : elementwise1_out->outputs) {
if (op->Name() == "layer_norm") num_layer_norm++;
if (num_layer_norm >= 2) return;
}

std::unordered_set<const Node *> del_node_set;
// Create an PrelnResidualBias op node
OpDesc new_desc;
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