fix ut test=develop

Author: yaoxuefeng6

paddle/fluid/framework/generator.h

@@ -37,10 +37,8 @@ struct Generator {
   Generator() {
     GeneratorState default_gen_state_cpu;
     default_gen_state_cpu.device = -1;
-    std::random_device rnd;
-    uint64_t init_seed = (((uint64_t)rnd()) << 32) + rnd();
-    default_gen_state_cpu.current_seed = init_seed;
-    std::seed_seq seq({init_seed});
+    default_gen_state_cpu.current_seed = 34342423252;
+    std::seed_seq seq({34342423252});
     default_gen_state_cpu.cpu_engine = std::mt19937_64(seq);
     this->state_ = std::make_shared<GeneratorState>(default_gen_state_cpu);
   }

paddle/fluid/memory/allocation/mmap_allocator.cc

@@ -61,12 +61,6 @@ std::string GetIPCName() {
 #endif
   handle += "_";
   handle += std::to_string(rd());
-  /*
-  handle +=
-      framework::Generator::GetInstance()->is_init_py
-          ? std::to_string(framework::Generator::GetInstance()->Random64())
-          : std::to_string(rd());
-  */
   return std::move(handle);
 }
 

paddle/fluid/operators/detection/generate_proposal_labels_op.cc

@@ -13,7 +13,6 @@ limitations under the License. */
 #include <algorithm>
 #include <string>
 #include <vector>
-#include "paddle/fluid/framework/generator.h"
 #include "paddle/fluid/framework/op_registry.h"
 #include "paddle/fluid/operators/detection/bbox_util.h"
 #include "paddle/fluid/operators/gather.h"
@@ -191,13 +190,7 @@ std::vector<std::vector<int>> SampleFgBgGt(
       const int64_t fg_size = static_cast<int64_t>(fg_inds.size());
       if (fg_size > fg_rois_per_this_image) {
         for (int64_t i = fg_rois_per_this_image; i < fg_size; ++i) {
-          int rng_ind =
-              framework::Generator::GetInstance()->is_init_py
-                  ? std::floor(uniform(framework::Generator::GetInstance()
-                                           ->GetCPUEngine()) *
-                               i)
-                  : std::floor(uniform(engine) * i);
-          // int rng_ind = std::floor(uniform(engine) * i);
+          int rng_ind = std::floor(uniform(engine) * i);
           if (rng_ind < fg_rois_per_this_image) {
             std::iter_swap(fg_inds.begin() + rng_ind, fg_inds.begin() + i);
             std::iter_swap(mapped_gt_inds.begin() + rng_ind,

paddle/fluid/operators/detection/rpn_target_assign_op.cc

@@ -13,7 +13,6 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include <random>
-#include "paddle/fluid/framework/generator.h"
 #include "paddle/fluid/framework/op_registry.h"
 #include "paddle/fluid/operators/detection/bbox_util.h"
 #include "paddle/fluid/operators/math/math_function.h"
@@ -160,14 +159,7 @@ void ReservoirSampling(const int num, std::vector<int>* inds,
   if (len > static_cast<size_t>(num)) {
     if (use_random) {
       for (size_t i = num; i < len; ++i) {
-        int rng_ind =
-            framework::Generator::GetInstance()->is_init_py
-                ? std::floor(
-                      uniform(
-                          framework::Generator::GetInstance()->GetCPUEngine()) *
-                      i)
-                : std::floor(uniform(engine) * i);
-        // int rng_ind = std::floor(uniform(engine) * i);
+        int rng_ind = std::floor(uniform(engine) * i);
         if (rng_ind < num)
           std::iter_swap(inds->begin() + rng_ind, inds->begin() + i);
       }