1 files changed, 62 insertions, 0 deletions
diff --git a/tensorflow/core/grappler/optimizers/data/map_and_batch_numa_aware_replacement.cc b/tensorflow/core/grappler/optimizers/data/map_and_batch_numa_aware_replacement.cc
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index 0000000000..452089eb67
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+++ b/tensorflow/core/grappler/optimizers/data/map_and_batch_numa_aware_replacement.cc
@@ -0,0 +1,62 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "tensorflow/core/grappler/optimizers/data/map_and_batch_numa_aware_replacement.h"
+
+#include "tensorflow/core/framework/node_def.pb.h"
+#include "tensorflow/core/grappler/clusters/cluster.h"
+#include "tensorflow/core/grappler/grappler_item.h"
+#include "tensorflow/core/grappler/mutable_graph_view.h"
+#include "tensorflow/core/grappler/op_types.h"
+#include "tensorflow/core/grappler/optimizers/custom_graph_optimizer_registry.h"
+#include "tensorflow/core/grappler/optimizers/data/graph_utils.h"
+
+namespace tensorflow {
+namespace grappler {
+namespace {
+
+NodeDef MakeNumaAware(const NodeDef& node, MutableGraphView* graph) {
+  NodeDef numa_aware_node = node;
+  graph_utils::SetUniqueGraphNodeName("map_and_batch_numa_aware",
+                                      graph->GetGraph(), &numa_aware_node);
+  numa_aware_node.set_op("ExperimentalNumaMapAndBatchDataset");
+  return numa_aware_node;
+}
+
+}  // namespace
+
+Status MapAndBatchNumaAwareReplacement::Optimize(Cluster* cluster,
+                                                 const GrapplerItem& item,
+                                                 GraphDef* output) {
+  *output = item.graph;
+  MutableGraphView graph(output);
+  std::set<string> nodes_to_delete;
+
+  for (const NodeDef& node : item.graph.node()) {
+    if (node.op() != "MapAndBatchDatasetV2") continue;
+
+    auto* numa_node = graph.AddNode(MakeNumaAware(node, &graph));
+    graph.ReplaceInput(node, *numa_node);
+    nodes_to_delete.insert(node.name());
+  }
+  graph.DeleteNodes(nodes_to_delete);
+  return Status::OK();
+}
+
+REGISTER_GRAPH_OPTIMIZER_AS(MapAndBatchNumaAwareReplacement,
+                            "map_and_batch_numa_aware_replacement");
+
+}  // namespace grappler
+}  // namespace tensorflow