user/developer guide

doc/developer-guide/engine.md

@@ -0,0 +1,8 @@
+DAG Engine
+==========
+
+NArray
+------
+
+Push Function
+-------------

doc/developer-guide/executor.md

@@ -0,0 +1,11 @@
+GraphExecutor
+=============
+
+Operator Graph
+--------------
+
+Memory optimization
+-------------------
+
+Forward and Backward
+--------------------

doc/developer-guide/operator.md

@@ -0,0 +1,19 @@
+Implementing New Operators
+==========================
+
+Operator Property
+-----------------
+* Param
+* InferShape
+* Arguments and Returns
+* Request Resources
+* Backward dependency
+* Inplace Option
+
+Operator
+--------
+* Context
+* Forward and Backward functions
+
+Create Operator from Operator Property
+--------------------------------------

doc/developer-guide/symbol.md

@@ -0,0 +1,23 @@
+Symbol Interface
+================
+
+Symbol
+------
+
+Node
+----
+
+DataEntry
+---------
+
+Atomic Symbol
+-------------
+
+Symbol Composition
+------------------
+
+Static Graph
+------------
+
+Autodiff
+--------

doc/overview.md

@@ -0,0 +1,21 @@
+MXNet Documentation
+===================
+This is document of MXNet
+
+Get Started
+-----------
+
+Tutorials
+---------
+
+User Guide
+----------
+* [Symbolic Construction of Neural Nets](user-guide/symbol.md)
+* [Execute the Symbol](user-guide/executor.md)
+
+Developer Guide
+---------------
+* [Symbol Interface](developer-guide/symbol.md)
+* [Executor](developer-guide/executor.md)
+* [Implementing Operators](user-guide/operator.md)
+* [DAG Engine](developer-guide/engine.md)

src/symbol/symbol.cc

@@ -504,6 +504,13 @@ void Symbol::ToStaticGraph(StaticGraph *out_graph) const {
     } else {
       out_graph->nodes[nid].op.reset(nullptr);
     }
+    // backward source
+    if (node_order[nid]->backward_source_node) {
+      out_graph->nodes[nid].backward_source_id =
+          node_index[node_order[nid]->backward_source_node.get()];
+    } else {
+      out_graph->nodes[nid].backward_source_id = -1;
+    }
     out_graph->nodes[nid].name = node_order[nid]->name;
     auto &inputs = out_graph->nodes[nid].inputs;
     inputs.clear();