PaddlePaddle · zhwesky2010 · Jan 29, 2024 · Jan 26, 2024
diff --git a/paddle/fluid/pybind/eager_method.cc b/paddle/fluid/pybind/eager_method.cc
@@ -70,7 +70,6 @@ typedef SSIZE_T ssize_t;
 #include "paddle/phi/kernels/funcs/math_function.h"
 #include "paddle/utils/pybind.h"
 
-PHI_DECLARE_bool(set_to_1d);
 PHI_DECLARE_bool(use_stride_kernel);
 
 namespace paddle {
@@ -179,34 +178,7 @@ static PyObject* tensor_method_numpy(TensorObject* self,
   Py_intptr_t py_strides[paddle::framework::DDim::kMaxRank];  // NOLINT
   size_t py_rank = tensor_dims.size();
   size_t numel = 1;
-  if (py_rank == 0) {
-    Py_ssize_t args_num = PyTuple_Size(args);
-    // true by default
-    bool set_to_1d = FLAGS_set_to_1d;
-    if (args_num == (Py_ssize_t)1) {
-      PyObject* obj = PyTuple_GET_ITEM(args, 0);
-      if (obj == Py_False) {
-        set_to_1d = false;
-      }
-    }
-    if (set_to_1d) {
-      // 0D Tensor hack process to 1D numpy, will remove in release 2.6
-      VLOG(0)
-          << "Warning:: 0D Tensor cannot be used as 'Tensor.numpy()[0]' . In "
-             "order to avoid this problem, "
-             "0D Tensor will be changed to 1D numpy currently, but it's not "
-             "correct and will be "
-             "removed in release 2.6. For Tensor contain only one element, "
-             "Please "
-             "modify "
-             " 'Tensor.numpy()[0]' to 'float(Tensor)' as soon as "
-             "possible, "
-             "otherwise 'Tensor.numpy()[0]' will raise error in release 2.6.";
-      py_rank = 1;
-      py_dims[0] = 1;
-      py_strides[0] = static_cast<Py_intptr_t>(sizeof_dtype * numel);
-    }
-  } else if (self->tensor.is_dense_tensor()) {
+  if (self->tensor.is_dense_tensor()) {
     auto tensor_stride = self->tensor.strides();
 
     for (int i = static_cast<int>(tensor_dims.size()) - 1; i >= 0; --i) {

diff --git a/paddle/fluid/pybind/imperative.cc b/paddle/fluid/pybind/imperative.cc
@@ -64,7 +64,6 @@ limitations under the License. */
 #include "paddle/phi/core/compat/arg_map_context.h"
 #include "paddle/phi/core/type_defs.h"
 
-PHI_DECLARE_bool(set_to_1d);
 namespace paddle {
 namespace pybind {
 

diff --git a/paddle/phi/core/flags.cc b/paddle/phi/core/flags.cc
@@ -743,16 +743,6 @@ PHI_DEFINE_EXPORTED_int32(
     "less FLAGS_max_inplace_grad_add, than it will be use several grad_add"
     "instead of sum. Default is 0.");
 
-/**
- * Tensor.numpy() has a hack, and this flag can close this hack
- * [true]: set 0D Tensor to 1D Numpy
- * [false]: not set 0D Tensor to 1D Numpy, close the hack
- *
- * Now, just set true by default in 2.5 transition time
- * which will be removed in future (2.6) .
- */
-PHI_DEFINE_EXPORTED_bool(set_to_1d, false, "set 0D Tensor to 1D numpy");
-
 /**
  * Debug related FLAG
  * Name: tracer_mkldnn_ops_on

diff --git a/paddle/phi/kernels/funcs/slice_utils.h b/paddle/phi/kernels/funcs/slice_utils.h
@@ -19,8 +19,6 @@ limitations under the License. */
 #include <vector>
 #include "paddle/phi/core/flags.h"
 
-PHI_DECLARE_bool(set_to_1d);
-
 namespace phi {
 
 namespace funcs {
@@ -205,11 +203,6 @@ inline DDim GetDecreasedDims(const DDim slice_dims,
         new_shape.push_back(decreased_dims[i]);
       }
     }
-    if (FLAGS_set_to_1d && new_shape.size() == 0) {
-      // NOTE(zoooo0820): Hack procssing to 1-D, when axes decrease to 0-D in
-      // slice. This will remove in release 2.6.
-      new_shape.push_back(1);
-    }
     decreased_dims = common::make_ddim(new_shape);
   }
   return decreased_dims;

diff --git a/paddle/phi/kernels/stride/slice_kernel.cc b/paddle/phi/kernels/stride/slice_kernel.cc
@@ -20,8 +20,6 @@
 #include "paddle/phi/core/kernel_registry.h"
 #include "paddle/phi/kernels/funcs/slice_utils.h"
 
-PHI_DECLARE_bool(set_to_1d);
-
 namespace phi {
 
 template <typename Context>
@@ -74,12 +72,6 @@ void SliceStridedKernel(const Context& ctx,
         new_stride.push_back(output_stride[i]);
       }
     }
-    if (FLAGS_set_to_1d && new_shape.size() == 0) {
-      // NOTE(zoooo0820): Hack processing to 1-D, when axes decrease to 0-D in
-      // slice. This will remove in release 2.6.
-      new_shape.push_back(1);
-      new_stride.push_back(0);
-    }
     output_dims = new_shape;
     output_stride = new_stride;
   }

@@ -737,7 +737,6 @@ for /F %%# in ('wmic os get localdatetime^|findstr 20') do set start=%%#
 set start=%start:~4,10%
 
 set FLAGS_call_stack_level=2
-set FLAGS_set_to_1d=False
 dir %THIRD_PARTY_PATH:/=\%\install\openblas\lib
 dir %THIRD_PARTY_PATH:/=\%\install\openblas\bin
 dir %THIRD_PARTY_PATH:/=\%\install\zlib\bin

@@ -61,7 +61,6 @@ function init() {
 
     # NOTE(chenweihang): For easy debugging, CI displays the C++ error stacktrace by default
     export FLAGS_call_stack_level=2
-    export FLAGS_set_to_1d=False
 }
 
 function cmake_base() {

diff --git a/python/paddle/distributed/auto_parallel/static/operators/dist_slice.py b/python/paddle/distributed/auto_parallel/static/operators/dist_slice.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import paddle
 
 from ..utils import compute_compatible_dim_mapping, is_dim_shard
 from .common import (
@@ -72,14 +71,7 @@ def is_output_compatible(self, dist_op):
             if i not in decrease_axis:
                 ref_indices.append(i)
         if ref_indices == []:
-            # NOTE(zoooo0820): When all axes are decreased, the output will be 1-D
-            # with FLAGS_set_to_1d=True.
-            if paddle.get_flags('FLAGS_set_to_1d')['FLAGS_set_to_1d']:
-                assert len(out_dims_mapping) == 1
-                if is_dim_shard(out_dims_mapping[0]):
-                    return False
-            else:
-                assert len(out_dims_mapping) == 0
+            assert len(out_dims_mapping) == 0
         else:
             for i in range(len(out_dims_mapping)):
                 ref_index = ref_indices[i]
@@ -149,11 +141,6 @@ def update_dims_mapping(self, dist_op):
                 ref_indices.append(i)
 
         if ref_dims_mapping == []:
-            # NOTE(zoooo0820): When all axes are decreased, the output will be 1-D
-            # with FLAGS_set_to_1d=True.
-            if paddle.get_flags('FLAGS_set_to_1d')['FLAGS_set_to_1d']:
-                ref_dims_mapping = [-1]
-                assert ref_dims_mapping[0] == out_dims_mapping[0]
             assert len(ref_dims_mapping) == len(out_dims_mapping)
             changed = False
         else: