[cherry-pick] add log for memory stats (#54087)

* add log for memory stats

* fix string_split in einsum

* Set random seed for test_tensordot (#53004)

---------
Co-authored-by: NRuibiao Chen <chenruibiao@baidu.com>

paddle/fluid/memory/stats.h

@@ -22,6 +22,7 @@ limitations under the License. */
 #include "paddle/fluid/platform/errors.h"
 #include "paddle/fluid/platform/macros.h"
 #include "paddle/phi/common/thread_data_registry.h"
+#include "paddle/utils/string/string_helper.h"
 
 namespace paddle {
 namespace memory {
@@ -74,6 +75,13 @@ class Stat : public StatBase {
         thread_data_registry.GetMutableCurrentThreadData();
     thread_local_stat->current += increment;
 
+    VLOG(8) << string::split_string(
+                   phi::enforce::demangle(typeid(*thread_local_stat).name()),
+                   "::")
+                   .back()
+            << ": Update current_value with " << increment
+            << ", after update, current value = " << GetCurrentValue();
+
     if (thread_local_stat->current > thread_local_stat->peak) {
       thread_local_stat->peak = thread_local_stat->current;
       int64_t current_value = GetCurrentValue();
@@ -81,8 +89,13 @@ class Stat : public StatBase {
       while (prev_value < current_value &&
              !peak_value_.compare_exchange_weak(prev_value, current_value)) {
       }
-      VLOG(8) << "Update peak_value, after update, peak_value = "
-              << peak_value_.load() << " , current value = " << current_value;
+      VLOG(8) << string::split_string(
+                     phi::enforce::demangle(typeid(*thread_local_stat).name()),
+                     "::")
+                     .back()
+              << ": Update current_value with " << increment
+              << ", after update, peak_value = " << peak_value_.load()
+              << " , current value = " << current_value;
     }
   }
 

paddle/phi/kernels/impl/einsum_grad_impl.h

@@ -152,7 +152,7 @@ void EinsumGradKernel(const Context& dev_ctx,
   if (x.size() == 1) {  // Unary
     auto splits = paddle::string::split_string(equation, "->");
     auto left = splits[0];
-    right = splits[1].substr(1);
+    right = splits[1];
     auto new_equation = right + "->" + gather_labels_except_reduction(left);
     auto new_operands = std::vector<const DenseTensor*>();
     new_operands.push_back(&out_grad);
@@ -171,8 +171,7 @@ void EinsumGradKernel(const Context& dev_ctx,
     auto splits = paddle::string::split_string(equation, "->");
     auto left = splits[0];
     auto ops = paddle::string::split_string(left, ",");
-    right = splits[1].substr(1);
-
+    right = splits[1];
     auto equation_for_A =
         ops[1] + "," + right + "->" + gather_labels_except_reduction(ops[0]);
     auto equation_for_B =

paddle/phi/kernels/impl/einsum_impl.h

@@ -326,19 +326,16 @@ inline static void ParseEinsumEquation(
     std::vector<int>* output_dims,
     std::string* right,
     std::vector<std::string>* input_strs) {
-  VLOG(5) << "Start ParseEinsumEquation";
+  VLOG(5) << "Start ParseEinsumEquation " << equation;
   auto results = paddle::string::split_string(equation, "->");
   auto left = results[0];
   ReplaceEllipsis(left);
-  *right = results[1].substr(1);
+  *right = results[1];
   ReplaceEllipsis(*right);
   auto op_labels = paddle::string::split_string(left, ",");
-  // split_string("i,") -> ["i"], we push back a "".
+  // split_string("i,") -> ["i", ""], we push back a "".
   // split_string("->") -> [], we push back a "".
-  if (op_labels.size() == 0)
-    op_labels.push_back("");
-  else if (left[left.size() - 1] == ',')
-    op_labels.push_back("");
+  if (op_labels.size() == 0) op_labels.push_back("");
   std::for_each(op_labels.begin(), op_labels.end(), ReplaceEllipsis);
   GlobalInfo(op_labels, *right, labeltype, all_labels);
   InferLabelShape(op_labels, inputs, labelshape, ellipsis_dims, broadcast_dims);

paddle/utils/string/string_helper.h

@@ -127,12 +127,10 @@ std::vector<T> split_string(const std::string& str, const std::string& delim) {
   while ((pos = str.find(delim, pre_pos)) != std::string::npos) {
     tmp_str.assign(str, pre_pos, pos - pre_pos);
     res_list.push_back(tmp_str);
-    pre_pos = pos + 1;
+    pre_pos = pos + delim.size();
   }
   tmp_str.assign(str, pre_pos, str.length() - pre_pos);
-  if (!tmp_str.empty()) {
-    res_list.push_back(tmp_str);
-  }
+  res_list.push_back(tmp_str);
   return res_list;
 }
 

python/paddle/fluid/tests/unittests/test_tensordot.py

@@ -19,6 +19,8 @@ import numpy as np
 import paddle
 from paddle.fluid import core
 
+np.random.seed(2021)
+
 
 def tensordot_np(x, y, axes):
     if isinstance(axes, paddle.fluid.framework.Variable):