Fix a bug related to dispensable inputs and refine the inference unittest (#10527)

* Fix a bug related to dispensable inputs and refine the inference unittest.

* Fix the use of dispensable inputs in reshape_op.

* Polish the enforce statements.

* Fix an English writing typo.

paddle/fluid/framework/operator.h

@@ -192,6 +192,10 @@ class ExecutionContext {
     return op_.Attr<T>(name);
   }
 
+  bool HasInput(const std::string& name) const { return op_.HasInputs(name); }
+
+  bool HasOutput(const std::string& name) const { return op_.HasOutputs(name); }
+
   size_t InputSize(const std::string& name) const {
     return op_.Inputs(name).size();
   }

paddle/fluid/inference/tests/book/test_inference_image_classification.cc

@@ -16,7 +16,6 @@ limitations under the License. */
 #include "gtest/gtest.h"
 #include "paddle/fluid/inference/tests/test_helper.h"
 
-DEFINE_string(data_set, "cifar10", "Data set to test");
 DEFINE_string(dirname, "", "Directory of the inference model.");
 DEFINE_string(fp16_dirname, "", "Directory of the float16 inference model.");
 DEFINE_int32(batch_size, 1, "Batch size of input data");
@@ -35,19 +34,19 @@ TEST(inference, image_classification) {
   // 0. Call `paddle::framework::InitDevices()` initialize all the devices
   // In unittests, this is done in paddle/testing/paddle_gtest_main.cc
 
+  const bool is_combined = false;
+  std::vector<std::vector<int64_t>> feed_target_shapes =
+      GetFeedTargetShapes(dirname, is_combined);
+
   paddle::framework::LoDTensor input;
   // Use normilized image pixels as input data,
   // which should be in the range [0.0, 1.0].
-  if (FLAGS_data_set == "cifar10") {
-    SetupTensor<float>(&input, {FLAGS_batch_size, 3, 32, 32},
-                       static_cast<float>(0), static_cast<float>(1));
-  } else if (FLAGS_data_set == "imagenet") {
-    SetupTensor<float>(&input, {FLAGS_batch_size, 3, 224, 224},
-                       static_cast<float>(0), static_cast<float>(1));
-  } else {
-    LOG(FATAL) << "Only cifar10 or imagenet is supported.";
-  }
-
+  feed_target_shapes[0][0] = FLAGS_batch_size;
+  paddle::framework::DDim input_dims =
+      paddle::framework::make_ddim(feed_target_shapes[0]);
+  LOG(INFO) << input_dims;
+  SetupTensor<float>(&input, input_dims, static_cast<float>(0),
+                     static_cast<float>(1));
   std::vector<paddle::framework::LoDTensor*> cpu_feeds;
   cpu_feeds.push_back(&input);
 
@@ -60,7 +59,7 @@ TEST(inference, image_classification) {
     LOG(INFO) << "--- CPU Runs: ---";
     LOG(INFO) << "Batch size is " << FLAGS_batch_size;
     TestInference<paddle::platform::CPUPlace, false, true>(
-        dirname, cpu_feeds, cpu_fetchs1, FLAGS_repeat);
+        dirname, cpu_feeds, cpu_fetchs1, FLAGS_repeat, is_combined);
     LOG(INFO) << output1.dims();
   }
 
@@ -73,7 +72,7 @@ TEST(inference, image_classification) {
   LOG(INFO) << "--- GPU Runs: ---";
   LOG(INFO) << "Batch size is " << FLAGS_batch_size;
   TestInference<paddle::platform::CUDAPlace, false, true>(
-      dirname, cpu_feeds, cpu_fetchs2, FLAGS_repeat);
+      dirname, cpu_feeds, cpu_fetchs2, FLAGS_repeat, is_combined);
   LOG(INFO) << output2.dims();
 
   if (!FLAGS_skip_cpu) {

paddle/fluid/inference/tests/test_helper.h

@@ -89,6 +89,50 @@ void CheckError(const paddle::framework::LoDTensor& output1,
   EXPECT_EQ(count, 0U) << "There are " << count << " different elements.";
 }
 
+std::unique_ptr<paddle::framework::ProgramDesc> InitProgram(
+    paddle::framework::Executor* executor, paddle::framework::Scope* scope,
+    const std::string& dirname, const bool is_combined = false) {
+  std::unique_ptr<paddle::framework::ProgramDesc> inference_program;
+  if (is_combined) {
+    // All parameters are saved in a single file.
+    // Hard-coding the file names of program and parameters in unittest.
+    // The file names should be consistent with that used in Python API
+    //  `fluid.io.save_inference_model`.
+    std::string prog_filename = "__model_combined__";
+    std::string param_filename = "__params_combined__";
+    inference_program =
+        paddle::inference::Load(executor, scope, dirname + "/" + prog_filename,
+                                dirname + "/" + param_filename);
+  } else {
+    // Parameters are saved in separate files sited in the specified
+    // `dirname`.
+    inference_program = paddle::inference::Load(executor, scope, dirname);
+  }
+  return inference_program;
+}
+
+std::vector<std::vector<int64_t>> GetFeedTargetShapes(
+    const std::string& dirname, const bool is_combined = false) {
+  auto place = paddle::platform::CPUPlace();
+  auto executor = paddle::framework::Executor(place);
+  auto* scope = new paddle::framework::Scope();
+
+  auto inference_program = InitProgram(&executor, scope, dirname, is_combined);
+  auto& global_block = inference_program->Block(0);
+
+  const std::vector<std::string>& feed_target_names =
+      inference_program->GetFeedTargetNames();
+  std::vector<std::vector<int64_t>> feed_target_shapes;
+  for (size_t i = 0; i < feed_target_names.size(); ++i) {
+    auto* var = global_block.FindVar(feed_target_names[i]);
+    std::vector<int64_t> var_shape = var->GetShape();
+    feed_target_shapes.push_back(var_shape);
+  }
+
+  delete scope;
+  return feed_target_shapes;
+}
+
 template <typename Place, bool CreateVars = true, bool PrepareContext = false>
 void TestInference(const std::string& dirname,
                    const std::vector<paddle::framework::LoDTensor*>& cpu_feeds,
@@ -124,22 +168,7 @@ void TestInference(const std::string& dirname,
     paddle::platform::RecordEvent record_event(
         "init_program",
         paddle::platform::DeviceContextPool::Instance().Get(place));
-
-    if (is_combined) {
-      // All parameters are saved in a single file.
-      // Hard-coding the file names of program and parameters in unittest.
-      // The file names should be consistent with that used in Python API
-      //  `fluid.io.save_inference_model`.
-      std::string prog_filename = "__model_combined__";
-      std::string param_filename = "__params_combined__";
-      inference_program = paddle::inference::Load(
-          &executor, scope, dirname + "/" + prog_filename,
-          dirname + "/" + param_filename);
-    } else {
-      // Parameters are saved in separate files sited in the specified
-      // `dirname`.
-      inference_program = paddle::inference::Load(&executor, scope, dirname);
-    }
+    inference_program = InitProgram(&executor, scope, dirname, is_combined);
   }
   // Disable the profiler and print the timing information
   paddle::platform::DisableProfiler(paddle::platform::EventSortingKey::kDefault,

paddle/fluid/operators/math/sequence2batch.h

@@ -64,18 +64,22 @@ class LoDTensor2BatchFunctor {
                   bool is_reverse = false) const {
     if (!is_cal_batch_lod) {
       auto lods = batch->lod();
-      PADDLE_ENFORCE_GT(lods.size(), 2UL);
-      PADDLE_ENFORCE_EQ(lods[1].size(),
-                        static_cast<size_t>(lod_tensor.dims()[0]));
+      PADDLE_ENFORCE_GT(lods.size(), 2UL,
+                        "The LoD of LoDTensor should inlcude at least 2-level "
+                        "sequence information.");
+      PADDLE_ENFORCE_EQ(
+          lods[1].size(), static_cast<size_t>(lod_tensor.dims()[0]),
+          "The LoD information should be consistent with the dims.");
       CopyMatrixRowsFunctor<DeviceContext, T> to_batch;
       to_batch(context, lod_tensor, lods[1], batch, true);
       return;
     }
 
     auto lods = lod_tensor.lod();
-    auto lod = lods[0];
     PADDLE_ENFORCE_EQ(lods.size(), 1UL, "Only support one level sequence now.");
 
+    auto lod = lods[0];
+
     std::vector<SeqInfo> seq_info;
     for (size_t seq_id = 0; seq_id < lod.size() - 1; ++seq_id) {
       int length = lod[seq_id + 1] - lod[seq_id];
@@ -157,9 +161,12 @@ class Batch2LoDTensorFunctor {
                   const framework::LoDTensor& batch,
                   framework::LoDTensor* lod_tensor) const {
     auto in_lod = batch.lod();
-    PADDLE_ENFORCE_GT(in_lod.size(), 2UL);
-    PADDLE_ENFORCE_EQ(in_lod[1].size(),
-                      static_cast<size_t>(lod_tensor->dims()[0]));
+    PADDLE_ENFORCE_GT(in_lod.size(), 2UL,
+                      "The LoD of LoDTensor should inlcude at least 2-level "
+                      "sequence information.");
+    PADDLE_ENFORCE_EQ(
+        in_lod[1].size(), static_cast<size_t>(lod_tensor->dims()[0]),
+        "The LoD information should be consistent with the dims.");
     CopyMatrixRowsFunctor<DeviceContext, T> to_seq;
     to_seq(context, batch, in_lod[1], lod_tensor, false);
   }

paddle/fluid/operators/reshape_op.h

@@ -124,7 +124,10 @@ class ReshapeKernel : public framework::OpKernel<T> {
   void Compute(const framework::ExecutionContext &ctx) const {
     auto *out = ctx.Output<framework::LoDTensor>("Out");
     auto *in = ctx.Input<framework::LoDTensor>("X");
-    auto *shape_tensor = ctx.Input<framework::LoDTensor>("Shape");
+
+    auto *shape_tensor = ctx.HasInput("Shape")
+                             ? ctx.Input<framework::LoDTensor>("Shape")
+                             : nullptr;
 
     framework::DDim out_dims = out->dims();