Update mutate function (#23)

nnvm/docs/Doxyfile

@@ -32,7 +32,7 @@ DOXYFILE_ENCODING      = UTF-8
 # title of most generated pages and in a few other places.
 # The default value is: My Project.
 
-PROJECT_NAME           = "mxnngraph"
+PROJECT_NAME           = "nnvm"
 
 # The PROJECT_NUMBER tag can be used to enter a project or revision number. This
 # could be handy for archiving the generated documentation or if some version
@@ -753,7 +753,7 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include
+INPUT                  = include/nnvm
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses

nnvm/example/src/operator.cc

@@ -11,7 +11,7 @@
 namespace myproject {
 
 using nnvm::FListInputNames;
-using nnvm::FMutateInput;
+using nnvm::FMutateInputs;
 using nnvm::FInferShape;
 using nnvm::FInferType;
 using nnvm::FInplaceOption;
@@ -119,8 +119,8 @@ NNVM_REGISTER_OP(add)
 NNVM_REGISTER_OP(assign)
 .set_num_inputs(2)
 .set_num_outputs(1)
-.attr<FMutateInput>("FMutateInput", [](const NodeAttrs& attrs, uint32_t index) {
-    return index == 0;
+.attr<FMutateInputs>("FMutateInputs", [](const NodeAttrs& attrs) {
+    return std::vector<uint32_t>{0};
   });
 
 }  // namespace myproject

nnvm/include/nnvm/graph.h

@@ -144,8 +144,8 @@ class IndexedGraph {
     return nodes_[node_id(node)];
   }
   /*! \return list of argument nodes */
-  inline const std::vector<uint32_t>& arg_nodes() const {
-    return arg_nodes_;
+  inline const std::vector<uint32_t>& input_nodes() const {
+    return input_nodes_;
   }
   /*! \return list of output entries */
   inline const std::vector<NodeEntry>& outputs() const {
@@ -161,8 +161,8 @@ class IndexedGraph {
   explicit IndexedGraph(const Graph& other);
   // node pointers in CSR structure.
   std::vector<Node> nodes_;
-  // index to argument nodes
-  std::vector<uint32_t> arg_nodes_;
+  // index to input nodes
+  std::vector<uint32_t> input_nodes_;
   // space to store the outputs entries
   std::vector<NodeEntry> outputs_;
   // mapping from node to index.

nnvm/include/nnvm/op_attr_types.h

@@ -43,13 +43,12 @@ using FListOutputNames = std::function<std::vector<std::string> (const NodeAttrs
 /*!
  * \brief Check whether operator will mutate k-th input.
  * \param attrs The attributes of the node.
- * \param index The input index
- * \return Whether this operator will mutate index-th input.
+ * \return list of input indices it mutates.
  *
- * \note Register under "FMutateInput", default return false
+ * \note Register under "FMutateInputs", default return false
  * FMutateInputs enables mutation order handling correctly.
  */
-using FMutateInput = std::function<bool (const NodeAttrs& attrs, uint32_t index)>;
+using FMutateInputs = std::function<std::vector<uint32_t> (const NodeAttrs& attrs)>;
 
 /*!
  * \brief Inference function of certain type.

nnvm/include/nnvm/pass_functions.h

@@ -54,16 +54,16 @@ inline Graph OrderMutation(Graph src) {
 /*!
  * \brief Infer shapes in the graph given the information.
  * \param graph source graph
- * \param shape_args The shapes of aruguments to the graph.
+ * \param shape_inputs The shapes of aruguments to the graph.
  * \param shape_attr_key The key to the node attribute that can indicate shape.
  * \return A graph with new attribute "shape" containing inferred shape of each NodeEntry.
  *  The index of ShapeVector is given by graph.indexed_graph().entry_id
  */
 inline Graph InferShape(Graph graph,
-                        ShapeVector shape_args = {},
+                        ShapeVector shape_inputs = {},
                         std::string shape_attr_key = "") {
-  if (shape_args.size() != 0) {
-    graph.attrs["shape_args"] = std::make_shared<any>(std::move(shape_args));
+  if (shape_inputs.size() != 0) {
+    graph.attrs["shape_inputs"] = std::make_shared<any>(std::move(shape_inputs));
   }
   if (shape_attr_key.length() != 0) {
     graph.attrs["shape_attr_key"] = std::make_shared<any>(std::move(shape_attr_key));
@@ -74,19 +74,19 @@ inline Graph InferShape(Graph graph,
 /*!
  * \brief Infer types in the graph given the information.
  * \param graph source graph
- * \param shape_args The shapes of aruguments to the graph.
- * \param shape_attr_key The key to the node attribute that can indicate shape.
+ * \param dtype_inputs The shapes of inputs to the graph.
+ * \param dtype_attr_key The key to the node attribute that can indicate shape.
  * \return A graph with new attribute "shape" containing inferred shape of each NodeEntry.
  *  The index of ShapeVector is given by graph.indexed_graph().entry_id
  */
 inline Graph InferType(Graph graph,
-                       DTypeVector type_args = {},
-                       std::string type_attr_key = "") {
-  if (type_args.size() != 0) {
-    graph.attrs["dtype_args"] = std::make_shared<any>(std::move(type_args));
+                       DTypeVector dtype_inputs = {},
+                       std::string dtype_attr_key = "") {
+  if (dtype_inputs.size() != 0) {
+    graph.attrs["dtype_inputs"] = std::make_shared<any>(std::move(dtype_inputs));
   }
-  if (type_attr_key.length() != 0) {
-    graph.attrs["dtype_attr_key"] = std::make_shared<any>(std::move(type_attr_key));
+  if (dtype_attr_key.length() != 0) {
+    graph.attrs["dtype_attr_key"] = std::make_shared<any>(std::move(dtype_attr_key));
   }
   return ApplyPass(std::move(graph), {"InferType"});
 }

nnvm/src/core/graph.cc

@@ -30,7 +30,7 @@ IndexedGraph::IndexedGraph(const Graph &g) {
       nodes_.emplace_back(std::move(new_node));
       // arg_nodes_
       if (n->is_variable()) {
-        arg_nodes_.push_back(nid);
+        input_nodes_.push_back(nid);
       }
       // node2index_
       node2index_[n.get()] = nid;

nnvm/src/core/symbolic.cc

@@ -31,16 +31,14 @@ NodePtr CreateVariableNode(const std::string& name) {
 // The version of that varaible will increase
 // version is used to implicitly order the mutation sequences
 inline void UpdateNodeVersion(Node *n) {
-  static auto& fmutate_inputs = Op::GetAttr<FMutateInput>("FMutateInput");
+  static auto& fmutate_inputs = Op::GetAttr<FMutateInputs>("FMutateInputs");
   for (NodeEntry& e : n->inputs) {
     if (e.node->is_variable()) {
       e.version = nnvm::get<VariableParam>(e.node->attrs.parsed).version;
     }
   }
   if (fmutate_inputs.count(n->op) != 0) {
-    FMutateInput fmutate = fmutate_inputs[n->op];
-    for (uint32_t i = 0; i < n->inputs.size(); ++i) {
-      if (fmutate(n->attrs, i)) {
+    for (uint32_t i : fmutate_inputs[n->op](n->attrs)) {
       NodeEntry& e = n->inputs[i];
       CHECK(e.node->is_variable())
           << "Mutation target can only be Variable";
@@ -48,7 +46,6 @@ inline void UpdateNodeVersion(Node *n) {
       e.version = ++nnvm::get<VariableParam>(e.node->attrs.parsed).version;
     }
   }
-  }
 }
 
 inline std::string DefaultVarName(const std::string &op_name,
@@ -192,18 +189,15 @@ std::vector<std::string> Symbol::ListInputNames(ListInputOption option) const {
   } else {
     std::unordered_set<Node*> mutable_set;
     std::vector<Node*> vlist;
-    static auto& fmutate_inputs = Op::GetAttr<FMutateInput>("FMutateInput");
+    static auto& fmutate_inputs = Op::GetAttr<FMutateInputs>("FMutateInputs");
     DFSVisit(this->outputs, [&ret, &mutable_set, &vlist](const NodePtr &node) {
         if (node->is_variable()) {
           vlist.push_back(node.get());
         } else if (fmutate_inputs.count(node->op)) {
-          FMutateInput fmutate = fmutate_inputs[node->op];
-          for (uint32_t i = 0; i < node->inputs.size(); ++i) {
-            if (fmutate(node->attrs, i)) {
+          for (uint32_t i : fmutate_inputs[node->op](node->attrs)){
             mutable_set.insert(node->inputs[i].node.get());
           }
         }
-        }
       });
     for (Node* node : vlist) {
       if ((option == kReadOnlyArgs && mutable_set.count(node) == 0) ||

nnvm/src/pass/infer_shape_type.cc

@@ -15,7 +15,7 @@ template<typename AttrType, typename IsNone>
 Graph InferAttr(Graph &&ret,
                 const AttrType def_value,
                 const char* infer_name,
-                const char* arg_name,
+                const char* input_name,
                 const char* attr_key_name,
                 const char* attr_name,
                 const char* unknown_name,
@@ -29,15 +29,15 @@ Graph InferAttr(Graph &&ret,
   // reshape shape vector
   AttrVector rshape(idx.num_node_entries(), def_value);
 
-  if (ret.attrs.count(arg_name) != 0) {
-    const AttrVector& shape_args = ret.GetAttr<AttrVector>(arg_name);
-    CHECK_LE(shape_args.size(), idx.arg_nodes().size())
+  if (ret.attrs.count(input_name) != 0) {
+    const AttrVector& shape_args = ret.GetAttr<AttrVector>(input_name);
+    CHECK_LE(shape_args.size(), idx.input_nodes().size())
         << "shape args is more than number of arguments";
     for (size_t i = 0; i < shape_args.size(); ++i) {
-      rshape[idx.entry_id(idx.arg_nodes()[i], 0)] = shape_args[i];
+      rshape[idx.entry_id(idx.input_nodes()[i], 0)] = shape_args[i];
     }
     // erase the provided arguments
-    ret.attrs.erase(arg_name);
+    ret.attrs.erase(input_name);
   }
   std::string shape_attr_key;
   if (ret.attrs.count(attr_key_name) != 0) {
@@ -113,7 +113,7 @@ NNVM_REGISTER_PASS(InferType)
 .set_body([](Graph ret) {
     return InferAttr<int>(
         std::move(ret), 0,
-        "FInferType", "dtype_args", "dtype_attr_key",
+        "FInferType", "dtype_inputs", "dtype_attr_key",
         "dtype", "dtype_num_unknown_nodes",
         [](const int t) { return t == -1; });
   })

nnvm/src/pass/order_mutation.cc

@@ -21,6 +21,13 @@ inline T get_with_default(const std::unordered_map<Node*, T> &map,
   return def;
 }
 
+inline bool IsMutate(const std::vector<uint32_t>& mutate_inputs, uint32_t i) {
+  if (mutate_inputs.size() == 0) return false;
+  auto it = std::lower_bound(
+      mutate_inputs.begin(), mutate_inputs.end(), i);
+  return (it != mutate_inputs.end()) && (*it == i);
+}
+
 Graph OrderMutation(const Graph& src) {
   std::unordered_map<Node*, std::vector<NodeEntry> > version_hist;
   DFSVisit(src.outputs, [&version_hist](const NodePtr& n) {
@@ -37,7 +44,13 @@ Graph OrderMutation(const Graph& src) {
   // start preparing for remapping the nodes.
   std::unordered_map<Node*, NodePtr> old_new;
   auto prepare = [&version_hist, &old_new] (const NodePtr& n) {
-    static auto& fmutate_inputs = Op::GetAttr<FMutateInput>("FMutateInput");
+    static auto& fmutate_inputs = Op::GetAttr<FMutateInputs>("FMutateInputs");
+    std::vector<uint32_t> mutate_inputs;
+    if (!n->is_variable() && fmutate_inputs.count(n->op)) {
+      mutate_inputs = fmutate_inputs[n->op](n->attrs);
+    }
+    std::sort(mutate_inputs.begin(), mutate_inputs.end());
+
     bool need_repl = false;
     for (size_t i = 0; i < n->inputs.size(); ++i) {
       const NodeEntry& e = n->inputs[i];
@@ -46,9 +59,7 @@ Graph OrderMutation(const Graph& src) {
         auto it = version_hist.find(e.node.get());
         if (it != version_hist.end()) {
           std::vector<NodeEntry>& vec = it->second;
-          uint32_t is_mutate =
-              fmutate_inputs.count(n->op) ? fmutate_inputs[n->op](n->attrs, i) : 0;
-          vec.emplace_back(NodeEntry{n, is_mutate, e.version});
+          vec.emplace_back(NodeEntry{n, IsMutate(mutate_inputs, i), e.version});
         }
       } else {
         if (old_new.count(e.node.get()) != 0) need_repl = true;
@@ -91,18 +102,21 @@ Graph OrderMutation(const Graph& src) {
           get_with_default(old_new, p.get(), p));
     }
     // add control deps
-    static auto& fmutate_inputs = Op::GetAttr<FMutateInput>("FMutateInput");
+    static auto& fmutate_inputs = Op::GetAttr<FMutateInputs>("FMutateInputs");
+    std::vector<uint32_t> mutate_inputs;
+    if (fmutate_inputs.count(kv.first->op)) {
+      mutate_inputs = fmutate_inputs[kv.first->op](kv.first->attrs);
+    }
+    std::sort(mutate_inputs.begin(), mutate_inputs.end());
+
     for (size_t i = 0; i < kv.first->inputs.size(); ++i) {
       const NodeEntry& e = kv.first->inputs[i];
       if (e.node->is_variable() && version_hist.count(e.node.get()) != 0) {
-        FMutateInput fmutate = fmutate_inputs.get(kv.first->op, nullptr);
-        uint32_t is_mutate = (fmutate == nullptr) ? 0 : fmutate(kv.first->attrs, i);
         std::vector<NodeEntry>& vec = version_hist.at(e.node.get());
-
         auto it = std::lower_bound(vec.begin(), vec.end(),
                                    NodeEntry{nullptr, 1, e.version},
                                    comparator);
-        if (is_mutate != 0) {
+        if (IsMutate(mutate_inputs, i)) {
           int read_dep = 0;
           while (it != vec.begin()) {
             --it;