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mindspore
提交 dc628066 编写于 作者: M mindspore-ci-bot 提交者： Gitee
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!1138 Pynative fix topk run failed 

Merge pull request !1138 from JoyLvliang/pynative-fix-topk-run-failed
上级 92d196f0 2e284cb8
隐藏空白更改
内联 并排
Showing with 142 addition and 43 deletion
mindspore/ccsrc/common/trans.cc
浏览文件 @ dc628066
......@@ -575,7 +575,7 @@ bool NchwToFracZ(const FormatArgs &args, void *result) {
auto src_ni = hfi * kCubeSize + col;
auto src_idx = src_row_offset + chw * col;
auto dst_idx = gfi * fractal_ele_cnt + col * c0 + row;
auto pad_zero = src_ni >= n || src_idx >= nchw || src_ci >= c;
auto pad_zero = (src_ni >= n || src_idx >= nchw || src_ci >= c) ? 1 : 0;
SetDataBysize(size, pad_zero);
}
}
......@@ -770,9 +770,11 @@ bool NchwToFracNz(const FormatArgs &args, void *result) {
auto h1h0_head = times_head + h1h0_idx * w0;
auto src_h_head = src_times_head + h1h0_idx * w;
for (size_t w1_idx = 0; w1_idx < num_w1; w1_idx++) {
size_t dst_idx = h1h0_head + w1_idx * h1h0w0;
size_t src_idx = src_h_head + w1_idx * w0;
SetDataBysize(size, 0);
for (size_t i = 0; i < w0; ++i) {
size_t src_idx = src_h_head + w1_idx * w0 + i;
size_t dst_idx = h1h0_head + w1_idx * h1h0w0 + i;
SetDataBysize(size, 0);
}
}
auto w1_head = num_w1 * w0;
for (size_t w0_idx = 0; w1_head + w0_idx < w; w0_idx++) {
......@@ -830,9 +832,11 @@ bool FracNzToNchw(const FormatArgs &args, void *result) {
auto h1h0_head = times_head + h1h0_idx * w0;
auto src_h_head = src_times_head + h1h0_idx * w;
for (size_t w1_idx = 0; w1_idx < num_w1; w1_idx++) {
size_t src_idx = h1h0_head + w1_idx * h1h0w0;
size_t dst_idx = src_h_head + w1_idx * w0;
SetDataBysize(size, 0);
for (size_t i = 0; i < w0; ++i) {
size_t src_idx = h1h0_head + w1_idx * h1h0w0 + i;
size_t dst_idx = src_h_head + w1_idx * w0 + i;
SetDataBysize(size, 0);
}
}
auto w1_head = num_w1 * w0;
for (size_t w0_idx = 0; w1_head + w0_idx < w; w0_idx++) {
......
mindspore/ccsrc/device/kernel_runtime.cc
浏览文件 @ dc628066
......@@ -159,6 +159,11 @@ void KernelRuntime::RunOpAssignInputMemory(const std::vector<tensor::TensorPtr>
const session::KernelGraph *graph) {
MS_EXCEPTION_IF_NULL(graph);
MS_EXCEPTION_IF_NULL(mem_manager_);
if (input_tensors.size() != graph->inputs().size()) {
MS_LOG(EXCEPTION) << "Input tensors size " << input_tensors.size()
<< " should be equal to graph input parameter size " << graph->inputs().size();
}
for (size_t input_index = 0; input_index < graph->inputs().size(); ++input_index) {
auto item = graph->inputs()[input_index];
MS_EXCEPTION_IF_NULL(item);
......@@ -416,6 +421,8 @@ void KernelRuntime::AssignValueNodeTensor(const ValueNodePtr &value_node, const
MS_EXCEPTION_IF_NULL(value_node);
MS_EXCEPTION_IF_NULL(node_value);
MS_EXCEPTION_IF_NULL(mem_manager_);
auto ms_context = MsContext::GetInstance();
MS_EXCEPTION_IF_NULL(ms_context);
auto tensor = node_value->cast<TensorPtr>();
if (tensor == nullptr) {
MS_LOG(WARNING) << "Tensor is null";
......@@ -423,13 +430,23 @@ void KernelRuntime::AssignValueNodeTensor(const ValueNodePtr &value_node, const
}
size_t tensor_size = tensor->data().nbytes();
auto node_size = CountNodeDeviceMemorySize(value_node, output_idx);
auto ptr = mem_manager_->MallocMem(kStaticMem, node_size);
TypeId output_type_id = AnfAlgo::GetOutputDeviceDataType(value_node, output_idx);
if (output_type_id == kTypeUnknown) {
output_type_id = AnfAlgo::GetOutputInferDataType(value_node, output_idx);
}
auto address = CreateDeviceAddress(ptr, node_size, AnfAlgo::GetOutputFormat(value_node, output_idx), output_type_id);
MS_EXCEPTION_IF_NULL(address);
auto output_format = AnfAlgo::GetOutputFormat(value_node, output_idx);
DeviceAddressPtr address = nullptr;
if (ms_context->enable_pynative_infer()) {
address = CreateDeviceAddress(nullptr, node_size, output_format, output_type_id);
MS_EXCEPTION_IF_NULL(address);
if (!mem_manager_->MallocMemFromMemPool(address, node_size)) {
MS_LOG(EXCEPTION) << "Malloc value node device memory failed !";
}
} else {
auto ptr = mem_manager_->MallocMem(kStaticMem, node_size);
address = CreateDeviceAddress(ptr, node_size, output_format, output_type_id);
MS_EXCEPTION_IF_NULL(address);
}
AnfAlgo::SetOutputAddr(address, output_idx, value_node.get());
if (!address->SyncHostToDevice(trans::GetRuntimePaddingShape(value_node, 0), tensor_size, tensor->data_type(),
tensor->data_c(false))) {
......@@ -442,6 +459,8 @@ void KernelRuntime::AssignValueNodeTensor(const ValueNodePtr &value_node, const
void KernelRuntime::AssignStaticMemoryValueNode(session::KernelGraph *graph) {
MS_EXCEPTION_IF_NULL(graph);
MS_EXCEPTION_IF_NULL(mem_manager_);
auto ms_context = MsContext::GetInstance();
MS_EXCEPTION_IF_NULL(ms_context);
for (auto &value_node : graph->graph_value_nodes()) {
MS_EXCEPTION_IF_NULL(value_node);
if (AnfAlgo::OutputAddrExist(value_node, 0)) {
......@@ -455,9 +474,18 @@ void KernelRuntime::AssignStaticMemoryValueNode(session::KernelGraph *graph) {
} else if (node_value->isa<StringImm>()) {
auto value = GetValue<std::string>(node_value);
size_t tensor_size = value.size();
auto ptr = mem_manager_->MallocMem(kStaticMem, tensor_size);
auto address = CreateDeviceAddress(ptr, tensor_size, kOpFormat_DEFAULT, kNumberTypeUInt8);
MS_EXCEPTION_IF_NULL(address);
DeviceAddressPtr address = nullptr;
if (ms_context->enable_pynative_infer()) {
address = CreateDeviceAddress(nullptr, tensor_size, kOpFormat_DEFAULT, kNumberTypeUInt8);
MS_EXCEPTION_IF_NULL(address);
if (!mem_manager_->MallocMemFromMemPool(address, tensor_size)) {
MS_LOG(EXCEPTION) << "Malloc value node device memory failed !";
}
} else {
auto ptr = mem_manager_->MallocMem(kStaticMem, tensor_size);
address = CreateDeviceAddress(ptr, tensor_size, kOpFormat_DEFAULT, kNumberTypeUInt8);
MS_EXCEPTION_IF_NULL(address);
}
AnfAlgo::SetOutputAddr(address, 0, value_node.get());
std::vector<int> shape = {1, SizeToInt(tensor_size)};
if (!address->SyncHostToDevice(shape, tensor_size, kNumberTypeUInt8, value.data())) {
......
mindspore/ccsrc/pynative/pynative_execute.cc
浏览文件 @ dc628066
......@@ -213,22 +213,22 @@ bool RunOpConvertConstInputToAttr(const py::object &input_object, size_t input_i
}
void PlantTensorTupleToVector(const py::tuple &tuple_inputs, const PrimitivePtr &op_prim,
std::vector<tensor::TensorPtr> *input_tensor) {
std::vector<tensor::TensorPtr> *input_tensors) {
MS_EXCEPTION_IF_NULL(op_prim);
MS_EXCEPTION_IF_NULL(input_tensor);
MS_EXCEPTION_IF_NULL(input_tensors);
for (const auto &input_object : tuple_inputs) {
if (!py::isinstance<tensor::Tensor>(input_object)) {
MS_LOG(EXCEPTION) << "The input object is not a tensor!";
}
auto tensor = py::cast<tensor::TensorPtr>(input_object);
MS_EXCEPTION_IF_NULL(tensor);
input_tensor->push_back(tensor);
input_tensors->push_back(tensor);
}
op_prim->set_attr(kAttrDynInputSizes, MakeValue(std::vector<int>{SizeToInt(tuple_inputs.size())}));
}
void ConvertValueTupleToTensor(const py::object &input_object, std::vector<tensor::TensorPtr> *input_tensor) {
MS_EXCEPTION_IF_NULL(input_tensor);
void ConvertValueTupleToTensor(const py::object &input_object, std::vector<tensor::TensorPtr> *input_tensors) {
MS_EXCEPTION_IF_NULL(input_tensors);
ValuePtr input_value = parse::data_converter::PyDataToValue(input_object);
MS_EXCEPTION_IF_NULL(input_value);
if (!input_value->isa<ValueTuple>()) {
......@@ -238,20 +238,23 @@ void ConvertValueTupleToTensor(const py::object &input_object, std::vector<tenso
MS_EXCEPTION_IF_NULL(value_tuple);
tensor::TensorPtr tensor_ptr = opt::CreateTupleTensor(value_tuple);
MS_EXCEPTION_IF_NULL(tensor_ptr);
input_tensor->push_back(tensor_ptr);
input_tensors->push_back(tensor_ptr);
}
void ConvertPyObjectToTensor(const py::object &input_object, const PrimitivePtr &op_prim,
std::vector<tensor::TensorPtr> *input_tensor) {
std::vector<tensor::TensorPtr> *input_tensors, int *tensor_mask) {
MS_EXCEPTION_IF_NULL(op_prim);
MS_EXCEPTION_IF_NULL(input_tensor);
MS_EXCEPTION_IF_NULL(input_tensors);
MS_EXCEPTION_IF_NULL(tensor_mask);
tensor::TensorPtr tensor_ptr = nullptr;
if (py::isinstance<tensor::Tensor>(input_object)) {
tensor_ptr = py::cast<tensor::TensorPtr>(input_object);
} else if (py::isinstance<py::float_>(input_object)) {
tensor_ptr = std::make_shared<tensor::Tensor>(py::cast<py::float_>(input_object), kFloat32);
*tensor_mask = kValueNodeTensorMask;
} else if (py::isinstance<py::int_>(input_object)) {
tensor_ptr = std::make_shared<tensor::Tensor>(py::cast<py::int_>(input_object), nullptr);
tensor_ptr = std::make_shared<tensor::Tensor>(py::cast<py::int_>(input_object), kInt32);
*tensor_mask = kValueNodeTensorMask;
} else if (py::isinstance<py::list>(input_object)) {
tensor_ptr = std::make_shared<tensor::Tensor>(py::cast<py::list>(input_object), nullptr);
} else if (py::isinstance<py::array>(input_object)) {
......@@ -261,20 +264,22 @@ void ConvertPyObjectToTensor(const py::object &input_object, const PrimitivePtr
} else if (py::isinstance<py::tuple>(input_object)) {
auto tuple_inputs = py::cast<py::tuple>(input_object);
if (py::isinstance<tensor::Tensor>(tuple_inputs[0])) {
PlantTensorTupleToVector(tuple_inputs, op_prim, input_tensor);
PlantTensorTupleToVector(tuple_inputs, op_prim, input_tensors);
} else {
ConvertValueTupleToTensor(input_object, input_tensor);
ConvertValueTupleToTensor(input_object, input_tensors);
*tensor_mask = kValueNodeTensorMask;
}
return;
} else {
MS_LOG(EXCEPTION) << "Run op inputs type is invalid!";
}
MS_EXCEPTION_IF_NULL(tensor_ptr);
input_tensor->push_back(tensor_ptr);
input_tensors->push_back(tensor_ptr);
}
void ConstructInputTensor(const OpExecInfoPtr &op_run_info, std::vector<bool> *tensors_mask,
void ConstructInputTensor(const OpExecInfoPtr &op_run_info, std::vector<int> *tensors_mask,
std::vector<tensor::TensorPtr> *input_tensors) {
MS_EXCEPTION_IF_NULL(op_run_info);
MS_EXCEPTION_IF_NULL(tensors_mask);
MS_EXCEPTION_IF_NULL(input_tensors);
PrimitivePtr op_prim = op_run_info->py_primitive;
......@@ -295,14 +300,29 @@ void ConstructInputTensor(const OpExecInfoPtr &op_run_info, std::vector<bool> *t
continue;
}
// convert const and tuple input to tensor
ConvertPyObjectToTensor(op_run_info->op_inputs[index], op_prim, input_tensors);
// make tensors, weight : 1, data : 0
std::vector<bool> new_mask(input_tensors->size() - tensors_mask->size(),
py::cast<bool>(op_run_info->inputs_mask[index]));
int tensor_mask = py::cast<int>(op_run_info->inputs_mask[index]);
ConvertPyObjectToTensor(op_run_info->op_inputs[index], op_prim, input_tensors, &tensor_mask);
// mark tensors, data : 0, weight : 1, valuenode: 2
std::vector<int> new_mask(input_tensors->size() - tensors_mask->size(), tensor_mask);
tensors_mask->insert(tensors_mask->end(), new_mask.begin(), new_mask.end());
}
}
void EraseValueNodeTensor(const std::vector<int> &tensors_mask, std::vector<tensor::TensorPtr> *input_tensors) {
MS_EXCEPTION_IF_NULL(input_tensors);
if (input_tensors->size() != tensors_mask.size()) {
MS_LOG(EXCEPTION) << "Input tensors size " << input_tensors->size() << " should be equal to tensors mask size "
<< tensors_mask.size();
}
std::vector<tensor::TensorPtr> new_input_tensors;
for (size_t index = 0; index < tensors_mask.size(); ++index) {
if (tensors_mask[index] != kValueNodeTensorMask) {
new_input_tensors.push_back(input_tensors->at(index));
}
}
*input_tensors = new_input_tensors;
}
py::object RunOpInMs(const OpExecInfoPtr &op_exec_info, PynativeStatusCode *status) {
MS_EXCEPTION_IF_NULL(op_exec_info);
MS_LOG(INFO) << "Start run op[" << op_exec_info->op_name << "] with backend policy ms";
......@@ -323,9 +343,10 @@ py::object RunOpInMs(const OpExecInfoPtr &op_exec_info, PynativeStatusCode *stat
std::string graph_info = GetSingleOpGraphInfo(op_exec_info);
std::vector<tensor::TensorPtr> input_tensors;
std::vector<bool> tensors_mask;
std::vector<int> tensors_mask;
ConstructInputTensor(op_exec_info, &tensors_mask, &input_tensors);
session->BuildOp(*op_exec_info, graph_info, input_tensors, tensors_mask);
EraseValueNodeTensor(tensors_mask, &input_tensors);
py::tuple result = session->RunOp(*op_exec_info, graph_info, input_tensors);
ms_context->set_enable_pynative_infer(false);
*status = PYNATIVE_SUCCESS;
......
mindspore/ccsrc/session/ascend_session.cc
浏览文件 @ dc628066
......@@ -127,6 +127,34 @@ std::vector<BaseRef> GetRealArgs(const KernelGraphPtr graph, const VectorRef &ar
}
return real_args;
}
void ClearRunOpMemoryResource(const KernelGraphPtr &kernel_graph) {
MS_EXCEPTION_IF_NULL(kernel_graph);
// clear input parameter memory resource
for (const auto &input_node : kernel_graph->inputs()) {
MS_EXCEPTION_IF_NULL(input_node);
AnfAlgo::SetOutputAddr(nullptr, 0, input_node.get());
}
// clear input value node memory resource
for (const auto &value_node : kernel_graph->graph_value_nodes()) {
MS_EXCEPTION_IF_NULL(value_node);
AnfAlgo::SetOutputAddr(nullptr, 0, value_node.get());
}
for (const auto &cnode : kernel_graph->execution_order()) {
MS_EXCEPTION_IF_NULL(cnode);
// clear output memory resource
for (size_t index = 0; index < AnfAlgo::GetOutputTensorNum(cnode); ++index) {
AnfAlgo::SetOutputAddr(nullptr, index, cnode.get());
}
// clear workspace memory resource
auto kernel_mod = AnfAlgo::GetKernelMod(cnode);
MS_EXCEPTION_IF_NULL(kernel_mod);
auto workspace_lists = kernel_mod->GetWorkspaceSizeList();
for (size_t index = 0; index < workspace_lists.size(); ++index) {
AnfAlgo::SetWorkspaceAddr(nullptr, index, cnode.get());
}
}
}
} // namespace
GraphId AscendSession::CompileGraph(const AnfNodePtrList &lst, const AnfNodePtrList &outputs) {
......@@ -308,8 +336,7 @@ bool AscendSession::GraphCacheExist(const GraphInfo &graph_info) const {
}
void AscendSession::BuildOp(const OpRunInfo &op_run_info, const GraphInfo &graph_info,
const std::vector<tensor::TensorPtr> &input_tensors,
const std::vector<bool> &tensors_mask) {
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<int> &tensors_mask) {
MS_LOG(INFO) << "Build op " << op_run_info.op_name << " start !";
if (GraphCacheExist(graph_info)) {
MS_LOG(INFO) << "Build op " << op_run_info.op_name << " finish !";
......@@ -355,6 +382,7 @@ py::tuple AscendSession::RunOp(const OpRunInfo &op_run_info, const GraphInfo &gr
}
py::object tuple_obj = utils::cast<PyObjectRef>(output_tensors).object_;
py::tuple tuple_tensors = py::cast<py::tuple>(tuple_obj);
ClearRunOpMemoryResource(graph);
MS_LOG(INFO) << "Run op " << op_run_info.op_name << " finish!";
return tuple_tensors;
}
......
mindspore/ccsrc/session/ascend_session.h
浏览文件 @ dc628066
......@@ -46,7 +46,7 @@ class AscendSession : public SessionBasic {
void RunGraph(const GraphId &graph_id, const std::vector<tensor::TensorPtr> &inputs, VectorRef *outputs) override;
void BuildGraph(GraphId) override;
void BuildOp(const OpRunInfo &op_run_info, const GraphInfo &graph_info,
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<bool> &tensors_mask) override;
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<int> &tensors_mask) override;
py::tuple RunOp(const OpRunInfo &op_run_info, const GraphInfo &graph_info,
const std::vector<tensor::TensorPtr> &input_tensors) override;
......
mindspore/ccsrc/session/gpu_session.cc
浏览文件 @ dc628066
......@@ -133,7 +133,7 @@ void GPUSession::RunGraph(const GraphId &graph_id, const std::vector<tensor::Ten
}
void GPUSession::BuildOp(const OpRunInfo &op_run_info, const GraphInfo &graph_info,
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<bool> &tensors_mask) {
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<int> &tensors_mask) {
// Prepare the graph
auto kernel_graph = ConstructSingleOpGraph(op_run_info, input_tensors, tensors_mask);
MS_EXCEPTION_IF_NULL(kernel_graph);
......
mindspore/ccsrc/session/gpu_session.h
浏览文件 @ dc628066
......@@ -40,7 +40,7 @@ class GPUSession : public SessionBasic {
void RunGraph(const GraphId &graph_id, const std::vector<tensor::TensorPtr> &inputs, VectorRef *outputs) override;
void BuildOp(const OpRunInfo &op_run_info, const GraphInfo &graph_info,
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<bool> &tensors_mask) override;
const std::vector<tensor::TensorPtr> &input_tensors, const std::vector<int> &tensors_mask) override;
py::tuple RunOp(const OpRunInfo &op_run_info, const GraphInfo &graph_info,
const std::vector<tensor::TensorPtr> &input_tensors) override;
......
mindspore/ccsrc/session/session_basic.cc
浏览文件 @ dc628066
......@@ -312,11 +312,22 @@ size_t LoadCtrlInputTensor(const std::shared_ptr<Context> &context, std::vector<
return inputs_params->size();
}
ValueNodePtr ConstructRunOpValueNode(const std::shared_ptr<KernelGraph> &graph, const tensor::TensorPtr &input_tensor) {
MS_EXCEPTION_IF_NULL(graph);
MS_EXCEPTION_IF_NULL(input_tensor);
auto abstract = std::make_shared<abstract::AbstractTensor>(input_tensor);
auto value_node = std::make_shared<ValueNode>(input_tensor);
value_node->set_abstract(abstract);
auto input_value_node = graph->NewValueNode(value_node);
graph->AddValueNodeToGraph(input_value_node);
return input_value_node;
}
ParameterPtr ConstructRunOpParameter(const std::shared_ptr<KernelGraph> &graph, const tensor::TensorPtr &input_tensor,
bool is_weight) {
int tensor_mask) {
auto param = graph->NewParameter();
MS_EXCEPTION_IF_NULL(param);
if (is_weight) {
if (tensor_mask == 1) {
py::object obj;
param->set_default_param(obj);
}
......@@ -675,7 +686,7 @@ void SessionBasic::CreateOutputNode(const CNodePtr &cnode, const std::shared_ptr
std::shared_ptr<KernelGraph> SessionBasic::ConstructSingleOpGraph(const OpRunInfo &op_run_info,
const std::vector<tensor::TensorPtr> &input_tensors,
const std::vector<bool> &tensors_mask) {
const std::vector<int> &tensors_mask) {
auto graph = std::make_shared<KernelGraph>();
std::vector<AnfNodePtr> inputs;
// set input[0]
......@@ -689,7 +700,12 @@ std::shared_ptr<KernelGraph> SessionBasic::ConstructSingleOpGraph(const OpRunInf
<< tensors_mask.size();
}
for (size_t i = 0; i < input_tensors.size(); ++i) {
auto parameter = ConstructRunOpParameter(graph, input_tensors.at(i), tensors_mask[i]);
if (tensors_mask[i] == kValueNodeTensorMask) {
auto value_node = ConstructRunOpValueNode(graph, input_tensors[i]);
inputs.push_back(value_node);
continue;
}
auto parameter = ConstructRunOpParameter(graph, input_tensors[i], tensors_mask[i]);
inputs.push_back(parameter);
graph->MutableInputs()->push_back(parameter);
}
......
mindspore/ccsrc/session/session_basic.h
浏览文件 @ dc628066
......@@ -65,7 +65,7 @@ class SessionBasic {
virtual void RunGraph(const GraphId &graph_id, const std::vector<tensor::TensorPtr> &inputs, VectorRef *outputs) = 0;
virtual void BuildOp(const OpRunInfo &, const GraphInfo &, const std::vector<tensor::TensorPtr> &input_tensors,
const std::vector<bool> &tensors_mask) {}
const std::vector<int> &tensors_mask) {}
virtual py::tuple RunOp(const OpRunInfo &, const GraphInfo &, const std::vector<tensor::TensorPtr> &input_tensors) {
return py::tuple();
......@@ -105,7 +105,7 @@ class SessionBasic {
// create a single run op graph
std::shared_ptr<KernelGraph> ConstructSingleOpGraph(const OpRunInfo &op_run_info,
const std::vector<tensor::TensorPtr> &input_tensors,
const std::vector<bool> &tensors_mask);
const std::vector<int> &tensors_mask);
// trans BaseRef list to py::tuple
BaseRef TransformBaseRefListToTuple(const BaseRef &base_ref);
// create a new kernel graph and update the graph sum
......
mindspore/ccsrc/utils/utils.h
浏览文件 @ dc628066
......@@ -193,6 +193,7 @@ const size_t kShape4dDims = 4;
const size_t kShape5dDims = 5;
const size_t kCubeSize = 16;
const size_t kMemAlignSize = 512;
const int kValueNodeTensorMask = 2;
// define special index in special node
constexpr auto kAnfPrimitiveIndex = 0;
......
mindspore/common/parameter.py
浏览文件 @ dc628066
......@@ -172,7 +172,8 @@ class Parameter:
def __mul__(self, other):
res = deepcopy(self)
res.default_input = res.default_input * other
default_input = res.default_input * other
res.default_input = Tensor(default_input.asnumpy().copy())
return res
def __truediv__(self, other):
......
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