COMPMID-524 - Implemented CLTuner object

Change-Id: Idbdbecca1fc299ed042936119d90e2bed8db0938
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/87101
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/arm_compute/runtime/CL/CLTuner.h b/arm_compute/runtime/CL/CLTuner.h
new file mode 100644
index 0000000000..8a7b96aa09
--- /dev/null
+++ b/arm_compute/runtime/CL/CLTuner.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_CLTUNER_H__
+#define __ARM_COMPUTE_CLTUNER_H__
+
+#include "arm_compute/core/CL/OpenCL.h"
+#include "arm_compute/runtime/CL/ICLTuner.h"
+
+#include <unordered_map>
+
+namespace arm_compute
+{
+class ICLKernel;
+
+/** Basic implementation of the OpenCL tuner interface */
+class CLTuner : public ICLTuner
+{
+public:
+    /** Constructor */
+    CLTuner();
+
+    /** Destructor */
+    ~CLTuner() = default;
+
+    /** Import LWS table
+     *
+     * @param[in] lws_table The unordered_map container to import
+     */
+    void import_lws_table(const std::unordered_map<std::string, cl::NDRange> &lws_table);
+
+    /** Export LWS table
+     *
+     * return The lws table as unordered_map container
+     */
+    const std::unordered_map<std::string, cl::NDRange> &export_lws_table();
+
+    // Inherited methods overridden:
+    void tune_kernel(ICLKernel &kernel) override;
+
+private:
+    /** Find optimal LWS using brute-force approach
+     *
+     * @param[in] kernel OpenCL kernel to be tuned with LWS
+     *
+     * @return The optimal LWS to use
+     */
+    cl::NDRange find_optimal_lws(ICLKernel &kernel);
+
+    std::unordered_map<std::string, cl::NDRange> _lws_table;
+};
+}
+#endif /*__ARM_COMPUTE_CLTUNER_H__ */