Imdb train demo2 (#19572)

* add place to reader, remove snappy dependency

* remove snappy dependency from train demo

test=develop

paddle/fluid/train/demo/CMakeLists.txt

@@ -16,15 +16,11 @@ include_directories("${PADDLE_LIB}/third_party/install/protobuf/include")
 include_directories("${PADDLE_LIB}/third_party/install/glog/include")
 include_directories("${PADDLE_LIB}/third_party/install/gflags/include")
 include_directories("${PADDLE_LIB}/third_party/install/xxhash/include")
-include_directories("${PADDLE_LIB}/third_party/install/snappy/include")
-include_directories("${PADDLE_LIB}/third_party/install/snappystream/include")
 include_directories("${PADDLE_LIB}/third_party/install/zlib/include")
 
 include_directories("${PADDLE_LIB}/third_party/boost")
 include_directories("${PADDLE_LIB}/third_party/eigen3")
 
-link_directories("${PADDLE_LIB}/third_party/install/snappy/lib")
-link_directories("${PADDLE_LIB}/third_party/install/snappystream/lib")
 link_directories("${PADDLE_LIB}/third_party/install/protobuf/lib")
 link_directories("${PADDLE_LIB}/third_party/install/glog/lib")
 link_directories("${PADDLE_LIB}/third_party/install/gflags/lib")
@@ -74,5 +70,5 @@ target_link_libraries(demo_trainer
         ${ARCHIVE_END}
         ${MATH_LIB}
         ${MKLDNN_LIB}
-        glog gflags protobuf snappystream snappy z xxhash
+        glog gflags protobuf z xxhash
         ${EXTERNAL_LIB})

paddle/fluid/train/imdb_demo/CMakeLists.txt

@@ -16,15 +16,11 @@ include_directories("${PADDLE_LIB}/third_party/install/protobuf/include")
 include_directories("${PADDLE_LIB}/third_party/install/glog/include")
 include_directories("${PADDLE_LIB}/third_party/install/gflags/include")
 include_directories("${PADDLE_LIB}/third_party/install/xxhash/include")
-include_directories("${PADDLE_LIB}/third_party/install/snappy/include")
-include_directories("${PADDLE_LIB}/third_party/install/snappystream/include")
 include_directories("${PADDLE_LIB}/third_party/install/zlib/include")
 
 include_directories("${PADDLE_LIB}/third_party/boost")
 include_directories("${PADDLE_LIB}/third_party/eigen3")
 
-link_directories("${PADDLE_LIB}/third_party/install/snappy/lib")
-link_directories("${PADDLE_LIB}/third_party/install/snappystream/lib")
 link_directories("${PADDLE_LIB}/third_party/install/protobuf/lib")
 link_directories("${PADDLE_LIB}/third_party/install/glog/lib")
 link_directories("${PADDLE_LIB}/third_party/install/gflags/lib")
@@ -74,5 +70,5 @@ target_link_libraries(demo_trainer
 	${ARCHIVE_END}
 	${MATH_LIB}
 	${MKLDNN_LIB}
-	glog gflags protobuf snappystream snappy z xxhash
+	glog gflags protobuf z xxhash
 	${EXTERNAL_LIB})

paddle/fluid/train/imdb_demo/demo_trainer.cc

@@ -149,6 +149,7 @@ int main(int argc, char* argv[]) {
         dataset_ptr->GetReaders();
     PADDLE_ENFORCE_EQ(readers.size(), 1,
                       "readers num should be equal to thread num");
+    readers[0]->SetPlace(paddle::platform::CPUPlace());
     const std::vector<std::string>& input_feed_names =
         readers[0]->GetUseSlotAlias();
     for (auto name : input_feed_names) {