[Numpy] Change semantics of ndim for operators in src/operator/contrib

src/operator/contrib/adamw-inl.h

@@ -87,8 +87,9 @@ inline bool MPUpdateInferShape(const nnvm::NodeAttrs& attrs,
                                mxnet::ShapeVector *out_attrs) {
   CHECK_EQ(in_attrs->size(), static_cast<size_t>(total_in)) << " in operator " << attrs.name;
   CHECK_EQ(out_attrs->size(), static_cast<size_t>(n_out)) << " in operator " << attrs.name;
-  // rescale_grad.shape = (1,)
-  SHAPE_ASSIGN_CHECK(*in_attrs, total_in - 1, mshadow::Shape1(1));
+  // rescale_grad.shape = ()
+  SHAPE_ASSIGN_CHECK(*in_attrs, total_in - 1, mxnet::TShape());
+  // TODO(@reminisce): change "none" behavior in ElemwiseAttr
   return ElemwiseAttr<mxnet::TShape, shape_is_none, shape_assign, true, shape_string, n_in, n_out>(
       attrs, in_attrs, out_attrs, mxnet::TShape());
 }

src/operator/contrib/adaptive_avg_pooling-inl.h

@@ -48,9 +48,9 @@ namespace mxnet {
 namespace op {
 
 struct AdaptiveAvgPoolParam : public dmlc::Parameter<AdaptiveAvgPoolParam> {
-  mxnet::TShape output_size;
+  mxnet::Tuple<int> output_size;
   DMLC_DECLARE_PARAMETER(AdaptiveAvgPoolParam) {
-    DMLC_DECLARE_FIELD(output_size).set_default(mxnet::TShape())
+    DMLC_DECLARE_FIELD(output_size).set_default(mxnet::Tuple<int>())
     .describe("int (output size) or a tuple of int for output (height, width).");
   }
 };
@@ -125,7 +125,7 @@ static bool AdaptiveAvgPoolOpInferShape(const nnvm::NodeAttrs& attrs,
   CHECK_EQ(out_shape->size(), 1U) << "Output:[data]";
   const AdaptiveAvgPoolParam& param = nnvm::get<AdaptiveAvgPoolParam>(attrs.parsed);
   mxnet::TShape dshape(in_shape->at(0));
-  if (dshape.ndim() == 0) return false;
+  if (mxnet::op::shape_is_none(dshape)) return false;
   if (param.output_size.ndim() == 0) {
     dshape[2] = 1;
     dshape[3] = 1;

src/operator/contrib/bilinear_resize-inl.h

@@ -134,7 +134,7 @@ static bool BilinearSampleOpInferShape(const nnvm::NodeAttrs& attrs,
   CHECK_EQ(out_shape->size(), 1U) << "Output:[data]";
   const BilinearSampleParam& param = nnvm::get<BilinearSampleParam>(attrs.parsed);
   mxnet::TShape dshape(in_shape->at(0));
-  if (dshape.ndim() == 0) return false;
+  if (mxnet::op::shape_is_none(dshape)) return false;
   if (param.scale_height.has_value()) {
     dshape[2] = static_cast<int>(param.scale_height.value() * in_shape->at(0)[2]);
   } else {

src/operator/contrib/boolean_mask.cc

@@ -121,7 +121,7 @@ inline void BooleanMaskForward<cpu>(const nnvm::NodeAttrs& attrs,
   const NDArray &out = outputs[0];
   CHECK_EQ(axis, 0) << "Not supported yet";
   CHECK_EQ(data.shape()[axis], idx.shape()[0]);
-  CHECK_EQ(idx.shape().ndim(), 1U);
+  CHECK_EQ(idx.shape().ndim(), 1U);  // idx is required to be 1-d.
   // count the number of 1s in `idx`, so that we could know the output dimension
   size_t idx_size = idx.shape()[0];
   std::vector<int32_t> prefix_sum(idx_size, 0);

src/operator/contrib/bounding_box-inl.h

@@ -94,7 +94,9 @@ inline bool BoxNMSShape(const nnvm::NodeAttrs& attrs,
   const BoxNMSParam& param = nnvm::get<BoxNMSParam>(attrs.parsed);
   CHECK_EQ(in_attrs->size(), 1U);
   CHECK_EQ(out_attrs->size(), 2U);
-  if (in_attrs->at(0).ndim() == 0U && out_attrs->at(0).ndim() == 0U) {
+  // TODO(@junrushao1994): verify with Joshua Z. Zhang about this operator
+  if (mxnet::op::shape_is_none(in_attrs->at(0))
+   && mxnet::op::shape_is_none(out_attrs->at(0))) {
     return false;
   }
 

src/operator/contrib/count_sketch-inl.h

@@ -151,7 +151,7 @@ class CountSketchProp : public OperatorProperty {
     CHECK_EQ(in_shape->size(), 3) <<"Input:[data, h, s]";
     const mxnet::TShape &dshape = (*in_shape)[CountSketch::kData];
     // require data to be known
-    if (dshape.ndim() == 0) return false;
+    if (mxnet::op::shape_is_none(dshape)) return false;
 
     out_shape->clear();
     if (dshape.ndim() == 4) {

src/operator/contrib/deformable_convolution-inl.h

@@ -69,11 +69,11 @@ struct DeformableConvolutionParam : public dmlc::Parameter<DeformableConvolution
   dmlc::optional<int> layout;
   DMLC_DECLARE_PARAMETER(DeformableConvolutionParam) {
     DMLC_DECLARE_FIELD(kernel).describe("Convolution kernel size: (h, w) or (d, h, w)");
-    DMLC_DECLARE_FIELD(stride).set_default(mxnet::TShape())
+    DMLC_DECLARE_FIELD(stride).set_default(mxnet::TShape(0))
       .describe("Convolution stride: (h, w) or (d, h, w). Defaults to 1 for each dimension.");
-    DMLC_DECLARE_FIELD(dilate).set_default(mxnet::TShape())
+    DMLC_DECLARE_FIELD(dilate).set_default(mxnet::TShape(0))
       .describe("Convolution dilate: (h, w) or (d, h, w). Defaults to 1 for each dimension.");
-    DMLC_DECLARE_FIELD(pad).set_default(mxnet::TShape())
+    DMLC_DECLARE_FIELD(pad).set_default(mxnet::TShape(0))
       .describe("Zero pad for convolution: (h, w) or (d, h, w). Defaults to no padding.");
     DMLC_DECLARE_FIELD(num_filter).set_range(1, 100000)
       .describe("Convolution filter(channel) number");
@@ -347,9 +347,9 @@ class DeformableConvolutionProp : public OperatorProperty {
     param_.Init(kwargs);
     if (param_.kernel.ndim() == 2) {
       param_.layout = param_.layout ? param_.layout.value() : mshadow::kNCHW;
-      if (param_.stride.ndim() == 0) param_.stride = Shape2(1, 1);
-      if (param_.dilate.ndim() == 0) param_.dilate = Shape2(1, 1);
-      if (param_.pad.ndim() == 0) param_.pad = Shape2(0, 0);
+      if (mxnet::op::shape_is_none(param_.stride)) param_.stride = Shape2(1, 1);
+      if (mxnet::op::shape_is_none(param_.dilate)) param_.dilate = Shape2(1, 1);
+      if (mxnet::op::shape_is_none(param_.pad)) param_.pad = Shape2(0, 0);
     } else {
       LOG(FATAL) << "not implemented";
     }
@@ -371,7 +371,7 @@ class DeformableConvolutionProp : public OperatorProperty {
     out_shape->resize(1, mxnet::TShape());
     const mxnet::TShape &dshp = (*in_shape)[conv::kData];
     const mxnet::TShape &oshp = (*in_shape)[conv::kOffset];
-    if (dshp.ndim() == 0) return false;
+    if (mxnet::op::shape_is_none(dshp)) return false;
     if (param_.kernel.ndim() == 2) {
       // 2d conv
       CHECK_EQ(dshp.ndim(), 4U) \

src/operator/contrib/dgl_graph.cc

@@ -265,28 +265,22 @@ static bool CSRNeighborUniformSampleShape(const nnvm::NodeAttrs& attrs,
   out_shape[0] = params.max_num_vertices + 1;
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i, out_shape);
-    success = success &&
-              out_attrs->at(i).ndim() != 0U &&
-              out_attrs->at(i).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i));
   }
   // sub_csr
   mxnet::TShape out_csr_shape(2);
   out_csr_shape[0] = params.max_num_vertices;
   out_csr_shape[1] = in_attrs->at(0)[1];
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i + num_subgraphs, out_csr_shape);
-    success = success &&
-              out_attrs->at(i + num_subgraphs).ndim() != 0U &&
-              out_attrs->at(i + num_subgraphs).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i + num_subgraphs));
   }
   // sub_layer
   mxnet::TShape out_layer_shape(1);
   out_layer_shape[0] = params.max_num_vertices;
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i + 2*num_subgraphs, out_layer_shape);
-    success = success &&
-              out_attrs->at(i + 2*num_subgraphs).ndim() != 0U &&
-              out_attrs->at(i + 2*num_subgraphs).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i + 2 * num_subgraphs));
   }
 
   return success;
@@ -323,37 +317,29 @@ static bool CSRNeighborNonUniformSampleShape(const nnvm::NodeAttrs& attrs,
   out_shape[0] = params.max_num_vertices + 1;
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i, out_shape);
-    success = success &&
-              out_attrs->at(i).ndim() != 0U &&
-              out_attrs->at(i).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i));
   }
   // sub_csr
   mxnet::TShape out_csr_shape(2);
   out_csr_shape[0] = params.max_num_vertices;
   out_csr_shape[1] = in_attrs->at(0)[1];
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i + num_subgraphs, out_csr_shape);
-    success = success &&
-              out_attrs->at(i + num_subgraphs).ndim() != 0U &&
-              out_attrs->at(i + num_subgraphs).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i + num_subgraphs));
   }
   // sub_probability
   mxnet::TShape out_prob_shape(1);
   out_prob_shape[0] = params.max_num_vertices;
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i + 2*num_subgraphs, out_prob_shape);
-    success = success &&
-              out_attrs->at(i + 2*num_subgraphs).ndim() != 0U &&
-              out_attrs->at(i + 2*num_subgraphs).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i + 2 * num_subgraphs));
   }
   // sub_layer
   mxnet::TShape out_layer_shape(1);
   out_layer_shape[0] = params.max_num_vertices;
   for (size_t i = 0; i < num_subgraphs; i++) {
     SHAPE_ASSIGN_CHECK(*out_attrs, i + 3*num_subgraphs, out_prob_shape);
-    success = success &&
-              out_attrs->at(i + 3*num_subgraphs).ndim() != 0U &&
-              out_attrs->at(i + 3*num_subgraphs).Size() != 0U;
+    success = success && !mxnet::op::shape_is_none(out_attrs->at(i + 3 * num_subgraphs));
   }
 
   return success;
@@ -1199,7 +1185,7 @@ inline bool EdgeIDShape(const nnvm::NodeAttrs& attrs,
   SHAPE_ASSIGN_CHECK(*out_attrs, 0, in_attrs->at(1));
   SHAPE_ASSIGN_CHECK(*in_attrs, 1, out_attrs->at(0));
   SHAPE_ASSIGN_CHECK(*in_attrs, 2, out_attrs->at(0));
-  return out_attrs->at(0).ndim() != 0U && out_attrs->at(0).Size() != 0U;
+  return !mxnet::op::shape_is_none(out_attrs->at(0));
 }
 
 inline bool EdgeIDType(const nnvm::NodeAttrs& attrs,
@@ -1357,7 +1343,7 @@ inline bool DGLAdjacencyShape(const nnvm::NodeAttrs& attrs,
 
   SHAPE_ASSIGN_CHECK(*out_attrs, 0, in_attrs->at(0));
   SHAPE_ASSIGN_CHECK(*in_attrs, 0, out_attrs->at(0));
-  return out_attrs->at(0).ndim() != 0U && out_attrs->at(0).Size() != 0U;
+  return !mxnet::op::shape_is_none(out_attrs->at(0));
 }
 
 inline bool DGLAdjacencyType(const nnvm::NodeAttrs& attrs,

src/operator/contrib/fft-inl.h

@@ -241,7 +241,7 @@ class FFTProp : public OperatorProperty {
     CHECK_EQ(in_shape->size(), 1) <<"Input:[data]";
     const mxnet::TShape &dshape = (*in_shape)[fft::kData];
     // require data to be known
-    if (dshape.ndim() == 0) return false;
+    if (mxnet::op::shape_is_none(dshape)) return false;
 
     out_shape->clear();
     if (dshape.ndim() == 4) {

src/operator/contrib/ifft-inl.h

@@ -231,7 +231,7 @@ class IFFTProp : public OperatorProperty {
     CHECK_EQ(in_shape->size(), 1) <<"Input:[data]";
     const mxnet::TShape &dshape = (*in_shape)[ifft::kData];
     // require data to be known
-    if (dshape.ndim() == 0) return false;
+    if (mxnet::op::shape_is_none(dshape)) return false;
 
     out_shape->clear();
     if (dshape.ndim() == 4) {

src/operator/contrib/index_copy-inl.h

@@ -165,8 +165,7 @@ inline bool IndexCopyShape(const nnvm::NodeAttrs& attrs,
   CHECK_EQ(in_attrs->at(1)[0], in_attrs->at(2)[0]);
   SHAPE_ASSIGN_CHECK(*out_attrs, 0, in_attrs->at(0));
   SHAPE_ASSIGN_CHECK(*in_attrs, 0, out_attrs->at(0));
-  return out_attrs->at(0).ndim() != 0U &&
-         out_attrs->at(0).Size() != 0U;
+  return !mxnet::op::shape_is_none(out_attrs->at(0));
 }
 
 }  // namespace op

src/operator/contrib/multi_proposal-inl.h

@@ -108,7 +108,7 @@ class MultiProposalProp : public OperatorProperty {
     using namespace mshadow;
     CHECK_EQ(in_shape->size(), 3) << "Input:[cls_prob, bbox_pred, im_info]";
     const mxnet::TShape &dshape = in_shape->at(proposal::kClsProb);
-    if (dshape.ndim() == 0) return false;
+    if (!mxnet::op::shape_is_none(dshape)) return false;
     Shape<4> bbox_pred_shape;
     bbox_pred_shape = Shape4(dshape[0], dshape[1] * 2, dshape[2], dshape[3]);
     SHAPE_ASSIGN_CHECK(*in_shape, proposal::kBBoxPred,

src/operator/contrib/nnvm_to_onnx.cc

@@ -417,7 +417,8 @@ std::unordered_map<std::string, mxnet::TShape> GetPlaceholderShapes(
   for (uint32_t i = 0; i < shape_inputs.size(); ++i) {
     std::string name = ig[ig.input_nodes()[i]].source->attrs.name;
     mxnet::TShape shp = shape_inputs[i];
-    if (shp.ndim() > 0) {
+    if (!mxnet::op::shape_is_none(shp)) {
+      // TODO(@reminisce): confirm
       placeholder_shapes.emplace(name, shp);
     }
   }

src/operator/contrib/optimizer_op.cc

@@ -45,7 +45,7 @@ inline bool GroupAdagradShape(const nnvm::NodeAttrs &attrs,
   SHAPE_ASSIGN_CHECK(*in_attrs, 0, out_attrs->at(0));
   SHAPE_ASSIGN_CHECK(*in_attrs, 1, out_attrs->at(0));
 
-  return out_attrs->at(0).ndim() != 0U && out_attrs->at(0).Size() != 0U &&
+  return !mxnet::op::shape_is_none(out_attrs->at(0)) &&
          (in_attrs->at(0)[0] == in_attrs->at(1)[0]) &&
          (in_attrs->at(0)[0] == in_attrs->at(2)[0]);
 }

src/operator/contrib/proposal-inl.h

@@ -106,7 +106,7 @@ class ProposalProp : public OperatorProperty {
     using namespace mshadow;
     CHECK_EQ(in_shape->size(), 3) << "Input:[cls_prob, bbox_pred, im_info]";
     const mxnet::TShape &dshape = in_shape->at(proposal::kClsProb);
-    if (dshape.ndim() == 0) return false;
+    if (mxnet::op::shape_is_none(dshape)) return false;
     Shape<4> bbox_pred_shape;
     bbox_pred_shape = Shape4(dshape[0], dshape[1] * 2, dshape[2], dshape[3]);
     SHAPE_ASSIGN_CHECK(*in_shape, proposal::kBBoxPred,

src/operator/contrib/quadratic_op-inl.h

@@ -60,7 +60,7 @@ inline bool QuadraticOpShape(const nnvm::NodeAttrs& attrs,
 
   SHAPE_ASSIGN_CHECK(*out_attrs, 0, in_attrs->at(0));
   SHAPE_ASSIGN_CHECK(*in_attrs, 0, out_attrs->at(0));
-  return out_attrs->at(0).ndim() != 0U && out_attrs->at(0).Size() != 0U;
+  return !mxnet::op::shape_is_none(out_attrs->at(0));
 }
 
 inline bool QuadraticOpType(const nnvm::NodeAttrs& attrs,

src/operator/contrib/sync_batch_norm-inl.h

@@ -475,7 +475,7 @@ class SyncBatchNormProp : public OperatorProperty {
     using namespace mshadow;
     CHECK_EQ(in_shape->size(), 3U) << "Input:[data, gamma, beta]";
     const mxnet::TShape &dshape = in_shape->at(0);
-    if (dshape.ndim() == 0) return false;
+    if (mxnet::op::shape_is_none(dshape)) return false;
     in_shape->at(1) = mxnet::TShape(Shape1(dshape[1]));
     in_shape->at(2) = mxnet::TShape(Shape1(dshape[1]));
     out_shape->clear();

src/operator/contrib/transformer-inl.h

@@ -41,7 +41,9 @@ static void DivSqrtDimForward_(const nnvm::NodeAttrs& attrs,
                   const std::vector<OpReqType>& req,
                   const std::vector<TBlob>& outputs) {
   mshadow::Stream<xpu> *s = ctx.get_stream<xpu>();
-  double sqrt_dim = std::sqrt(static_cast<double>(inputs[0].shape_[inputs[0].ndim() - 1]));
+  CHECK_GE(inputs[0].ndim(), 1);
+  int last_idx = inputs[0].ndim() - 1;
+  double sqrt_dim = std::sqrt(static_cast<double>(inputs[0].shape_[last_idx]));
   MSHADOW_TYPE_SWITCH(outputs[0].type_flag_, DType, {
     MXNET_ASSIGN_REQ_SWITCH(req[0], Req, {
       mxnet_op::Kernel<mxnet_op::op_with_req<mshadow_op::div, Req>, xpu>::Launch(