fix bug for multiple predictions for FPGA track

src/framework/executor.cpp

@@ -469,7 +469,7 @@ void Executor<Device, T>::FeedData(const std::vector<void *> &v) {
   PADDLE_MOBILE_ENFORCE(input_size == vars.size(),
                         "input data number not correct");
   for (int i = 0; i < input_size; i++) {
-    auto var = program_.scope->Var("feed", i);
+    auto var = vars[i];
     auto feed_tensor = var->template GetMutable<LoDTensor>();
     feed_tensor->external_data = v[i];
   }
@@ -482,7 +482,7 @@ void Executor<Device, T>::FeedTensorData(const vector<framework::Tensor> &v) {
   PADDLE_MOBILE_ENFORCE(input_size == vars.size(),
                         "input data number not correct");
   for (int i = 0; i < input_size; i++) {
-    auto var = program_.scope->Var("feed", i);
+    auto var = vars[i];
     auto feed_tensor = var->template GetMutable<LoDTensor>();
     feed_tensor->ShareDataWith(v[i]);
   }
@@ -495,8 +495,9 @@ void Executor<Device, T>::GetResults(std::vector<void *> *v) {
   auto vars = program_.scope->VarContain("fetch");
   PADDLE_MOBILE_ENFORCE(output_size == vars.size(),
                         "output data number not correct");
+
   for (int i = 0; i < output_size; i++) {
-    auto var = program_.scope->Var("fetch", i);
+    auto var = vars[i];
     auto fetch_tensor = var->template GetMutable<LoDTensor>();
     (*v)[i] = fetch_tensor->template data<float>();
   }
@@ -509,7 +510,7 @@ void Executor<Device, T>::GetTensorResults(
   auto output_size = vars.size();
 
   for (int i = 0; i < output_size; i++) {
-    auto var = program_.scope->Var("fetch", i);
+    auto var = vars[i];
     auto fetch_tensor = var->template GetMutable<LoDTensor>();
     v->push_back(fetch_tensor);
   }