COMPMID-978 Load/Store tuning data from file (Part2)

Change-Id: I1819f42c0e456673543b267d51f730b6e80a0ad9
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/122629
Reviewed-by: Robert Hughes <robert.hughes@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>

1 files changed, 21 insertions, 4 deletions

diff --git a/src/graph/Graph.cpp b/src/graph/Graph.cpp
index b1698e4672..2fe3a90aef 100644
--- a/src/graph/Graph.cpp
+++ b/src/graph/Graph.cpp
@@ -33,8 +33,19 @@
 #include "arm_compute/runtime/Tensor.h"
 #include "support/ToolchainSupport.h"
 
+#include <sys/stat.h>
+
 using namespace arm_compute::graph;
 
+namespace
+{
+bool file_exists(const std::string &filename)
+{
+    std::ifstream file(filename);
+    return file.good();
+}
+
+} // namespace
 struct Stage
 {
     ITensorObject                          *_input;
@@ -62,16 +73,20 @@ public:
     std::unique_ptr<INode>                      _current_node{ nullptr };
     ITensorObject                              *_current_output{ nullptr };
     bool                                        _info_enabled{ false };
-    CLFileTuner                                 _tuner{};
+    CLTuner                                     _tuner{};
 
 private:
     ITensorObject *_current_input{ nullptr };
     GraphHints     _previous_hints{};
 };
 
+static const std::string tuner_data_filename = "acl_tuner.csv";
 Graph::~Graph() //NOLINT
 {
-    //Can't use =default because the destructor must be defined after Graph::Private's definition
+    if(_pimpl->_tuner.tune_new_kernels() && !_pimpl->_tuner.lws_table().empty())
+    {
+        _pimpl->_tuner.save_to_file(tuner_data_filename);
+    }
 }
 
 Graph::Graph()
@@ -85,12 +100,14 @@ void Graph::graph_init(const bool use_cl_tuner)
     // Check if OpenCL is available and initialize the scheduler
     if(opencl_is_available())
     {
+        if(_pimpl->_tuner.lws_table().empty() && file_exists(tuner_data_filename))
+        {
+            _pimpl->_tuner.load_from_file(tuner_data_filename);
+        }
         _pimpl->_tuner.set_tune_new_kernels(use_cl_tuner);
-        _pimpl->_tuner.set_update_file(use_cl_tuner);
         arm_compute::CLScheduler::get().default_init(&_pimpl->_tuner);
     }
 }
-
 void Graph::run()
 {
     while(true)