set reshape redistribution strategy attribute to no redistribution

mindspore/ccsrc/frontend/parallel/graph_util/get_parallel_info.cc

@@ -44,7 +44,14 @@ py::dict GetParameterLayout(const FuncGraphPtr &graph) {
       auto device_arrangement = tensor_layout->device_arrangement().array();
       auto tensor_map = tensor_layout->tensor_map().array();
       auto slice_shape = tensor_layout->slice_shape().array();
-      std::vector<std::vector<int32_t>> layout = {device_arrangement, tensor_map, slice_shape};
+      int32_t _field_size = tensor_layout->get_field_size();
+      std::vector<int32_t> field_size;
+      if (_field_size != 0) {
+        field_size.push_back(_field_size);
+      } else {
+        field_size = {0};
+      }
+      std::vector<std::vector<int32_t>> layout = {device_arrangement, tensor_map, slice_shape, field_size};
       dict[py::str(name)] = layout;
       MS_LOG(INFO) << "GetParameterLayout name = " << name << ", layout " << tensor_layout->ToString();
     }

mindspore/ccsrc/frontend/parallel/ops_info/matmul_info.cc

@@ -105,6 +105,17 @@ Status MatMulBase::GetAttrs() {
     }
   }
 
+  auto field_size_iter = attrs_.find(FIELD_SIZE);
+  if (field_size_iter != attrs_.end()) {
+    MS_EXCEPTION_IF_NULL(field_size_iter->second);
+    if (field_size_iter->second->isa<Int32Imm>()) {
+      field_size_ = field_size_iter->second->cast<Int32ImmPtr>()->value();
+    } else {
+      MS_LOG(ERROR) << name_ << " : The value of field_size is not int.";
+      return FAILED;
+    }
+  }
+
   // infer inputs dimension size
   if ((inputs_shape_.size() != MATMUL_INPUTS_SIZE) || (outputs_shape_.size() != MATMUL_OUTPUTS_SIZE)) {
     MS_LOG(ERROR) << name_ << " : Inputs shape size or outputs shape size is wrong.";
@@ -346,6 +357,10 @@ Status MatMulBase::InferTensorLayout(TensorLayouts *inputs_layout, TensorLayouts
     return FAILED;
   }
 
+  if (field_size_ != 0) {
+    mat_b_layout.set_field_size(field_size_);
+  }
+
   inputs_layout->push_back(mat_a_layout);
   inputs_layout->push_back(mat_b_layout);
   outputs_layout->push_back(output_layout);

mindspore/ccsrc/frontend/parallel/ops_info/matmul_info.h

@@ -62,6 +62,7 @@ class MatMulBase : public OperatorInfo {
   bool transpose_a_ = false;
   bool transpose_b_ = false;
   bool forward_reduce_scatter_ = false;
+  int32_t field_size_ = 0;
   size_t mat_a_dimension_ = 0;
   size_t mat_b_dimension_ = 0;
 };

mindspore/ccsrc/frontend/parallel/ops_info/ops_utils.h

@@ -100,6 +100,7 @@ constexpr char CONCAT_DIM[] = "concat_dim";
 constexpr char FORWARD[] = "forward";
 constexpr char BACKWARD[] = "backward";
 constexpr char REDISTRIBUTION[] = "redistribution";
+constexpr char SKIP_REDISTRIBUTION[] = "skip_redistribution";
 constexpr char REPLACE[] = "replace";
 constexpr char CONNSYMBOL[] = "/";
 constexpr char INSTANCE_NAME[] = "instance_name";
@@ -131,6 +132,7 @@ constexpr char FORWARD_OP[] = "forward_op";
 constexpr char REDISTRIBUTION_OP[] = "redistribution_op";
 constexpr char DARA_PARALLEL[] = "data_parallel";
 constexpr char FORWARD_REDUCE_SCATTER[] = "forward_reduce_scatter";
+constexpr char FIELD_SIZE[] = "field_size";
 constexpr char OPTIMIZER_SUB_STRING[] = "optimizer";
 constexpr char DEVICE[] = "Device";
 

mindspore/ccsrc/frontend/parallel/ops_info/reshape_info.cc

@@ -18,6 +18,7 @@
 
 #include <memory>
 #include <vector>
+#include <utility>
 
 #include "frontend/parallel/device_manager.h"
 #include "frontend/parallel/device_matrix.h"
@@ -145,17 +146,23 @@ Status ReshapeInfo::ComputeReplaceOp() {
   MS_LOG(DEBUG) << name_ << ": input " << input_layout_.ToString();
   MS_LOG(DEBUG) << name_ << ": output " << output_layout_.ToString();
   MS_LOG(DEBUG) << name_ << ": dev_list " << dev_list.size();
-  RedistributionOpListPtr redistribution_oplist_ptr = tensor_redistribution.InferTensorRedistributionOperatorList();
-  if (redistribution_oplist_ptr == nullptr) {
-    if (is_generating_costs_) {
-      MS_LOG(DEBUG) << name_ << "InferTensorRedistribution failed.";
-    } else {
-      MS_LOG(ERROR) << name_ << "InferTensorRedistribution failed.";
+  if (is_skip_) {
+    ConstructOperator constructor;
+    replace_op_ = constructor.SkipRedisReshapeOP(output_layout_.slice_shape().array());
+    replace_op_info_.clear();
+  } else {
+    RedistributionOpListPtr redistribution_oplist_ptr = tensor_redistribution.InferTensorRedistributionOperatorList();
+    if (redistribution_oplist_ptr == nullptr) {
+      if (is_generating_costs_) {
+        MS_LOG(DEBUG) << name_ << "InferTensorRedistribution failed.";
+      } else {
+        MS_LOG(ERROR) << name_ << "InferTensorRedistribution failed.";
+      }
+      return FAILED;
     }
-    return FAILED;
+    replace_op_ = redistribution_oplist_ptr->first;
+    replace_op_info_ = redistribution_oplist_ptr->second;
   }
-  replace_op_ = redistribution_oplist_ptr->first;
-  replace_op_info_ = redistribution_oplist_ptr->second;
   MS_LOG(DEBUG) << name_ << ": replace op size = " << replace_op_.size();
   return SUCCESS;
 }
@@ -255,6 +262,19 @@ Status ReshapeInfo::InferTensorLayout(TensorLayouts *inputs_layout, TensorLayout
 }
 
 Status ReshapeInfo::InferTensorInfo() {
+  // skip reshape infer if skip_redistribution is true
+  if (is_skip_) {
+    TensorLayout layout;
+    Shape shape;
+    Shape slice_shape;
+    layout.set_skip_redistribution(true);
+    TensorInfo tensor_info_in(layout, shape, slice_shape);
+    inputs_tensor_info_.push_back(tensor_info_in);
+    outputs_tensor_info_.push_back(tensor_info_in);
+    MS_LOG(DEBUG) << name() << "skip redistribution reshape InferTensorInfo";
+    return SUCCESS;
+  }
+
   Shapes inputs_slice_shape, outputs_slice_shape;
   Strategys inputs_strategy = strategy_->GetInputDim();
   Strategys outputs_strategy = GetOutputsStrategy();
@@ -316,6 +336,16 @@ Status ReshapeInfo::InferDefaultLayout(const Shape &shape, TensorLayout *const l
 }
 
 Status ReshapeInfo::Init(const StrategyPtr &strategy) {
+  auto reshape_skip_redis_iter = attrs_.find(SKIP_REDISTRIBUTION);
+  if (reshape_skip_redis_iter != attrs_.end()) {
+    MS_EXCEPTION_IF_NULL(reshape_skip_redis_iter->second);
+    if (!reshape_skip_redis_iter->second->isa<BoolImm>()) {
+      MS_LOG(ERROR) << name_ << ": skip_redistribution is not a bool.";
+      return FAILED;
+    }
+    is_skip_ = reshape_skip_redis_iter->second->cast<BoolImmPtr>()->value();
+  }
+
   ResetQueueMember();
   device_number(strategy);
   if (strategy) {

mindspore/ccsrc/frontend/parallel/ops_info/reshape_info.h

@@ -98,6 +98,7 @@ class ReshapeInfo : public OperatorInfo {
   bool input_layout_set_flag_;
   bool output_layout_set_flag_;
   bool is_generating_costs_;
+  bool is_skip_ = false;
   std::string pre_operator_name_;
   std::string next_operator_name_;
 };

mindspore/ccsrc/frontend/parallel/step_parallel.cc

@@ -302,16 +302,26 @@ void Redistribution(const std::pair<AnfNodePtr, int> &node_pair, const OperatorI
   MS_LOG(DEBUG) << "Redistribution: middle_node " << middle_node->ToString() << " next_node " << next_node->ToString();
   // extract tensor layout in and out
   if (distribute_operator->outputs_tensor_info().empty()) {
-    MS_LOG(EXCEPTION) << "Failure:pre_node's tensorinfo_in is empty";
+    MS_LOG(WARNING) << "pre_node's tensorinfo_in is empty, operator name is " << distribute_operator->name();
+    return;
   }
 
   if (IntToSize(index - 1) >= next_distribute_operator->inputs_tensor_info().size()) {
-    MS_LOG(EXCEPTION) << "The index is out of range, the index is " << index - 1 << ", the vector size is "
-                      << next_distribute_operator->inputs_tensor_info().size();
+    MS_LOG(WARNING) << "The index is out of range, the index is " << index - 1 << ", the vector size is "
+                    << next_distribute_operator->inputs_tensor_info().size() << "next operator name is "
+                    << next_distribute_operator->name();
+    return;
   }
   TensorInfo tensorinfo_out = next_distribute_operator->inputs_tensor_info()[IntToSize(index - 1)];
   TensorLayout tensorlayout_out = tensorinfo_out.tensor_layout();
   TensorLayout tensorlayout_in = GetTensorInLayout(middle_node, middle_prim, distribute_operator);
+
+  if (tensorlayout_in.skip_redistribution() || tensorlayout_out.skip_redistribution()) {
+    MS_LOG(INFO) << "skip the reshape redistribution, operator name is" << distribute_operator->name()
+                 << "next distribute operator, operator name is" << next_distribute_operator->name();
+    return;
+  }
+
   if (tensor_redistribution.Init(tensorlayout_in, tensorlayout_out, dev_list) == FAILED) {
     MS_LOG(ERROR) << "Redistribution: middle_prim " << middle_prim->name() << " next_prim : " << next_prim_name;
     MS_LOG(ERROR) << "Redistribution: middle_node " << middle_node->ToString() << " next_node "

mindspore/ccsrc/frontend/parallel/tensor_layout/construct_operator.cc

@@ -28,6 +28,19 @@ Status ConstructOperator::Init(const RankList &dev_list, const Shape &dev_matrix
   return Status::SUCCESS;
 }
 
+// skip redistribution for reshape operator
+OperatorVector ConstructOperator::SkipRedisReshapeOP(Shape shape) {
+  OperatorAttrs attrs;
+  ValuePtr param_value = MakeValue(shape);
+  Attr param = std::make_pair(SHAPE, param_value);
+  OperatorParams params = {std::make_pair(param, 2)};
+  OperatorArgs args = std::make_pair(attrs, params);
+  Operator op = std::make_pair(RESHAPE, args);
+  OperatorVector opvector;
+  opvector.push_back(op);
+  return opvector;
+}
+
 Status ConstructOperator::ReshapeOP(Shape shape) {
   int32_t prod = std::accumulate(shape.begin(), shape.end(), 1, std::multiplies<int>());
   int32_t prod_expect = std::accumulate(tensor_shape_.begin(), tensor_shape_.end(), 1, std::multiplies<int>());

mindspore/ccsrc/frontend/parallel/tensor_layout/construct_operator.h

@@ -35,6 +35,7 @@ class ConstructOperator {
   ConstructOperator() : dev_size_(0) {}
   ~ConstructOperator() = default;
   Status Init(const RankList &dev_list, const Shape &dev_matrix_shape);
+  OperatorVector SkipRedisReshapeOP(Shape shape);
   Status ReshapeOP(Shape shape);
   Status StridedSliceOP(Args args);
   Status AllGatherOP(int32_t dev_dim);

mindspore/ccsrc/frontend/parallel/tensor_layout/tensor_layout.h

@@ -41,6 +41,14 @@ class TensorLayout {
   Status InitFromVector(const std::vector<int32_t> &device_arrangement, const std::vector<int32_t> &tensor_map,
                         const std::vector<int32_t> &tensor_shape);
 
+  bool skip_redistribution() const { return skip_redistribution_; }
+
+  void set_skip_redistribution(bool flag) { skip_redistribution_ = flag; }
+
+  int32_t get_field_size() const { return field_size_; }
+
+  void set_field_size(int32_t field_size) { field_size_ = field_size; }
+
   Arrangement device_arrangement() const { return device_arrangement_; }
 
   Map tensor_map() const { return tensor_map_; }
@@ -92,6 +100,8 @@ class TensorLayout {
   Arrangement device_arrangement_;
   Map tensor_map_;
   Arrangement tensor_shape_;
+  bool skip_redistribution_ = false;
+  int32_t field_size_ = 0;
 };
 }  // namespace parallel
 }  // namespace mindspore

mindspore/common/parameter.py

@@ -247,8 +247,8 @@ class Parameter:
             if not isinstance(layout, list):
                 raise TypeError("The layout should be list! layout is {}."
                                 .format(layout))
-            if len(layout) != 3:
-                raise ValueError("The length of layout must be 3! layout is {}."
+            if len(layout) < 3:
+                raise ValueError("The length of layout must be larger than 3! layout is {}."
                                  .format(layout))
             slice_index = int(_get_slice_index(layout[0], layout[1]))
             self.default_input = self.init_mode.to_tensor(slice_index, layout[2])

mindspore/parallel/_tensor.py

@@ -229,8 +229,8 @@ def _load_tensor_by_layout(tensor, layout):
     """
     if not isinstance(layout, list):
         raise TypeError("The layout should be list! layout is {}".format(layout))
-    if len(layout) != 3:
-        raise ValueError("The length of layout must be 3! layout is {}".format(layout))
+    if len(layout) < 3:
+        raise ValueError("The length of layout must be larger than 3! layout is {}".format(layout))
     dev_mat = layout[0]
     tensor_map = layout[1]
     if tensor.size() == 1:
@@ -290,3 +290,37 @@ def _reshape_param_data(param_data, dev_mat, tensor_map):
         tensor_slices_new = tensor_slices_new_inner
 
     return Tensor(tensor_slices_new[0])
+
+def _reshape_param_data_with_weight(param_data, dev_mat, field_size):
+    """
+    Combine param slice by the device matrix, used in model parallel scenario.
+
+    Args:
+        param_data (Tensor): The tensor to be reshaped and rearrangement,
+        generated from all the device from AllGatherParamNet.
+        dev_mat (list): The device matrix of devices.
+    Returns:
+        Tensor, the combined tensor which with the whole data value.
+
+    Examples:
+        >>> param_data = _allgather_param_net(param_data)
+        >>> dev_mat = [2, 2]
+        >>> field_size = [39]
+        >>> tensor = _reshape_param_data_with_weight(param_data, dev_mat, field_size)
+    """
+    device_count = 1
+    for dim in dev_mat:
+        device_count *= dim
+
+    tensor_slices = np.split(param_data.asnumpy(), device_count, axis=0)
+    tensor_slices_col = []
+    for i in range(len(tensor_slices[0][0])):
+        tensor_slices_new = np.array(tensor_slices[0][:, i]).reshape(field_size[0], -1)
+        for j in range(1, device_count):
+            tensor_slices_new = np.concatenate((tensor_slices_new,\
+                                   np.array(tensor_slices[j][:, i]).reshape(field_size[0], -1)), axis=1)
+        tensor_slices_col.append(tensor_slices_new)
+    new_tensor = np.array(tensor_slices_col[0]).reshape(-1, 1)
+    for i in range(1, len(tensor_slices_col)):
+        new_tensor = np.concatenate((new_tensor, np.array(tensor_slices_col[i]).reshape(-1, 1)), axis=1)
+    return Tensor(new_tensor)

mindspore/train/serialization.py

@@ -359,14 +359,17 @@ def _get_merged_param_data(net, param_name, param_data):
 
     dev_mat = layout[0]
     tensor_map = layout[1]
+    field_size = layout[3]
 
     from mindspore.parallel._cell_wrapper import get_allgather_cell
-    from mindspore.parallel._tensor import _reshape_param_data
+    from mindspore.parallel._tensor import _reshape_param_data, _reshape_param_data_with_weight
     # while any dim is not equal to -1, means param is splited and needs to be merged
     for dim in tensor_map:
         if dim != -1:
             allgather_net = get_allgather_cell()
             param_data = allgather_net(param_data)
+            if field_size[0]:
+                return _reshape_param_data_with_weight(param_data, dev_mat, field_size)
             return _reshape_param_data(param_data, dev_mat, tensor_map)
 
     return param_data

tests/ut/python/parallel/test_get_parameter_layout.py

@@ -49,8 +49,8 @@ def test_get_parameter_layout():
     net.set_auto_parallel()
     exe = me._executor
     exe.compile(net, x, phase='train', auto_parallel_mode=True)
-    x_layout = [[2, 4], [1, -1], [16, 32]]  # device_arrangement = [2, 4], tensor_map = [1, -1]
-    weight_layout = [[2, 4], [0, -1], [16, 32]]  # device_arrangement = [2, 4], tensor_map = [0, -1]
+    x_layout = [[2, 4], [1, -1], [16, 32], [0]]  # device_arrangement = [2, 4], tensor_map = [1, -1]
+    weight_layout = [[2, 4], [0, -1], [16, 32], [0]]  # device_arrangement = [2, 4], tensor_map = [0, -1]
     expect_dict = {'x': x_layout, 'w1': weight_layout}
     # to be resovled: static local variable count_p is used in step_parallel.cc, it needs to be reset between each ut
     assert net.parameter_layout_dict == expect_dict

tests/ut/python/parallel/test_reshape_skip_redistribution.py

@@ -0,0 +1,58 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# 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.
+
+import numpy as np
+
+import mindspore as ms
+from mindspore import context, Tensor, Parameter
+from mindspore.common.api import _executor
+from mindspore.nn import Cell, TrainOneStepCell, Momentum
+from mindspore.ops import operations as P
+
+
+class Net(Cell):
+    def __init__(self, matmul_weight, strategy1=None):
+        super().__init__()
+        self.gatherv2 = P.GatherV2().set_strategy(strategy1)
+        self.reshape = P.Reshape().add_prim_attr("skip_redistribution", True)
+        self.matmul = P.MatMul(transpose_b=False)
+        self.index = Tensor(np.ones([64, 64]), dtype=ms.int32)
+        self.matmul_weight = Parameter(matmul_weight, "w1")
+        self.axis = 0
+
+    def construct(self, x, b):
+        out = self.gatherv2(x, self.index, self.axis)
+        out = self.reshape(out, (64, -1))
+        out = self.matmul(out, self.matmul_weight)
+        return out
+
+
+_w1 = Tensor(np.ones([4096, 32]), dtype=ms.float32)
+_x = Tensor(np.ones([64, 64]), dtype=ms.float32)
+_b = Tensor(np.ones([128, 64, 32]), dtype=ms.float32)
+
+def compile_net(net):
+    context.set_context(save_graphs=True)
+    optimizer = Momentum(net.trainable_params(), learning_rate=0.1, momentum=0.9)
+    train_net = TrainOneStepCell(net, optimizer)
+    train_net.set_auto_parallel()
+    _executor.compile(train_net, _x, _b)
+    context.reset_auto_parallel_context()
+
+
+def test_reshape_skip_redistribution():
+    context.set_auto_parallel_context(parallel_mode="semi_auto_parallel", device_num=8, global_rank=0)
+    strategy1 = ((1, 8), (1, 1))
+    net = Net(_w1, strategy1)
+    compile_net(net)